{"title":"Hanna Checkers","description":"\u003cp\u003eHanna Checkers products are compact, easy-to-use digital testers designed to make water testing simple and accurate for everyone. Combining the reliability of professional instruments with the convenience of a handheld device, Hanna Checkers provide quick results for a range of water parameters, including chlorine, pH, and alkalinity. Ideal for pool owners, hobbyists, and professionals alike, these testers make monitoring water quality fast, efficient, and hassle-free.\u003c\/p\u003e","products":[{"product_id":"hanna-instruments-775-freshwater-alkalinity-colorimeter-checker®hc","title":"Hanna Instruments-775 Freshwater Alkalinity Colorimeter - Checker®HC","description":"\u003cp\u003eIdeal for fresh water aquariums (not suitable for salt water marine tanks).\u003c\/p\u003e\n\u003cp\u003eThe HI-775 Alkalinity Checker for fresh water is a simple, accurate and cost effective way to measure alkalinity in fresh water.\u003c\/p\u003e\n\u003cp\u003eChecker®HC is supplied with reagents for 25 tests.\u003c\/p\u003e\n\u003cp\u003eUse code HI-775-26 for future purchases.\u003c\/p\u003e\n\u003cp\u003eDesigned as a more accurate alternative to chemical test kits, it is easy to use with single button operation and a large LCD display. This mini tester also features auto shut-off to ensure a longer battery life.\u003c\/p\u003e\n\u003cp\u003eThe Hanna Instruments-775 is ideal for checking water quality, great for educational and environmental applications and for use in freshwater aquaria.\u003c\/p\u003e\n\u003cp\u003eDesigned as a more accurate alternative to chemical test kits, the Hanna Instruments-775 provides quick, accurate results in four easy steps. (See below).\u003c\/p\u003e\n\u003cp\u003eThe Hanna Instruments-775 uses a colorimetric method. The reaction causes a distinctive range of colours from yellow to blue to develop. This meter has been developed to work with fresh water samples.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003ePlease note:\u003c\/strong\u003e Any chlorine present in the sample will interfere with the reading. To remove the chlorine interference add one drop of Hanna Instruments-93755-53 Chlorine Remover to the unreacted sample prior to testing.\u003c\/p\u003e\n\u003ch3\u003eFeatures:\u003c\/h3\u003e\n\u003cul\u003e\n\u003cul\u003e\n\u003cli\u003eSmall palm-sized design\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/ul\u003e\n\u003cul\u003e\n\u003cul\u003e\n\u003cli\u003eAccurate from ±5ppm ± 5% of reading\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/ul\u003e\n\u003cul\u003e\n\u003cul\u003e\n\u003cli\u003eDedicated to a single parameter\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/ul\u003e\n\u003cul\u003e\n\u003cul\u003e\n\u003cli\u003eUses a single AAA battery\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/ul\u003e\n\u003cul\u003e\n\u003cul\u003e\n\u003cli\u003eAuto Power Off after 10 minutes in inactivity\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/ul\u003e\n\u003cul\u003e\n\u003cul\u003e\n\u003cli\u003eBuilt-in timer for timed reaction readings\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eIdeal for:\u003c\/h3\u003e\n\u003cul style=\"list-style-type: circle;\"\u003e\n\u003cli\u003eWater Quality\u003c\/li\u003e\n\u003cli\u003eEducation\u003c\/li\u003e\n\u003cli\u003eFreshwater Aquarium\u003c\/li\u003e\n\u003cli\u003eEnvironmental\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eOrder Information:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe Hanna Instruments-775 Checker®HC is supplied with 2 cuvettes and caps, alkalinity reagent kit for 25 tests (Hanna Instruments-775-26), 1 x1.5V AAA battery, and an instruction manual.\u003c\/p\u003e\n\u003cp\u003eAlso available: Hanna Instruments-775-11 Calibration set.\u003c\/p\u003e","brand":"Hanna Instruments","offers":[{"title":"Default Title","offer_id":40354374516887,"sku":"HI-775","price":68.31,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0574\/5511\/6439\/files\/4_c532272c-b869-48d2-a07d-e46754f8cb07.jpg?v=1730375187"},{"product_id":"hanna-instruments-708-11-nitrite-high-range-checker-hc-calibration-check-set-0-150-ppm","title":"Hanna Instruments-708-11 Nitrite High Range Checker HC Calibration Check Set (0-150 ppm)","description":"The Nitrite High Range Checker® HC Calibration Check Set – Hanna Instruments-708-11 provides a simple solution to validating the Nitrite High Range Checker® HC – Hanna Instruments-708 in the range of 0 to 150 ppm (mg\/L) nitrite. This high-quality set of standards is supplied with a Certificate of Analysis. The Certificate of Analysis provides the lot number, reference values and expiry date for traceability when certifying the Checker® HC.\u003cbr\u003e\u003ch3\u003eHanna Instruments-708-11 Nitrite High Range Checker HC Calibration Check Set\u003c\/h3\u003e\u003cbr\u003e\u003cp\u003eHanna Instruments-708-11 is a high-quality set of calibration standards that allows users to validate the Nitrite High Range Checker® HC – Hanna Instruments-708. The Hanna Instruments-708-11 includes one sealed cuvette for zero ppm nitrite and one cuvette that is tinted to an equivalent 75 +\/- 5 ppm nitrite sample @ 25°C. The calibration check set is produced using reagent grade chemicals in a temperature controlled environment.\u003c\/p\u003e","brand":"Hanna Instruments","offers":[{"title":"Default Title","offer_id":40354378547351,"sku":"HI-708-11","price":28.88,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0574\/5511\/6439\/products\/hi-708-11_nitrite_high_range_checker_hc_calibration_check_set_8ce0c20d-beaf-424e-b779-e6e97a9c3f70.jpg?v=1624278954"},{"product_id":"hanna-instruments-771-chlorine-ultra-high-range-handheld-colorimeter-checker®hc","title":"Hanna Instruments-771 Chlorine Ultra High Range Handheld Colorimeter, Checker®HC","description":"\u003cp\u003eThe Hanna Instruments 771 Chlorine Ultra High Range Handheld Colorimeter is a cutting edge, portable device designed for precise measurement of chlorine levles in water. With its ultra-high range capability, this colorimeter is perfect for use in water treatment, swimming pools, and industrial processes where accurate chlorine monitoring is essential. \u003c\/p\u003e\n\u003cp\u003eFeaturing an intuitive interface, and a compact design, this Checker HC is user-friendly and ideal for on-the-go testing. \u003c\/p\u003e\n\u003cp\u003eSimple to use, you add a sample to the cuvette, insert it into the colorimeter, and receive fast, reliable results with just the push of a button. The built-in calibration feature ensures concsitent accuracy, while the large, easy-to-read display makes interpreting results extremely straightforward.\u003c\/p\u003e\n\u003ch3\u003eFeatures\u003c\/h3\u003e\n\u003cp\u003eSmall palm-sized design\u003c\/p\u003e\n\u003cp\u003eAccurate from ±3 ppb ±5% of reading\u003c\/p\u003e\n\u003cp\u003eDedicated to a single parameter\u003c\/p\u003e\n\u003cp\u003eUses a single AAA battery\u003c\/p\u003e\n\u003cp\u003eAuto Power Off after 10 minutes in inactivity\u003c\/p\u003e\n\u003cp\u003eBuilt-in timer for timed reaction readings\u003c\/p\u003e\n\u003ch3\u003eIdeal for\u003c\/h3\u003e\n\u003cp\u003eWater Quality\u003c\/p\u003e\n\u003cp\u003eEducation\u003c\/p\u003e\n\u003cp\u003ePlating\u003c\/p\u003e\n\u003cp\u003eEnvironmental\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e","brand":"Hanna Instruments","offers":[{"title":"Default Title","offer_id":40354394865815,"sku":"HI-771","price":85.69,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0574\/5511\/6439\/files\/chlorine-checker-ultra-high-range-0-500ppm.jpg?v=1733406679"},{"product_id":"hanna-instruments-755-seawater-marine-alkalinity-colorimeter-checker®hc","title":"Hanna Instruments-755 Seawater\/Marine Alkalinity Colorimeter - Checker®HC","description":"\u003cp\u003eIdeal for salt water aquariums and coral reef tanks.\u003c\/p\u003e\n\u003cp\u003eDesigned exclusively for saltwater aquariums, the Hanna Instruments-755 offers a quick, easy and highly accurate method of checking Alkalinity.\u003c\/p\u003e\n\u003cp\u003eChecker®HC is supplied with reagents for 25 tests. Use code Hanna Instruments-755-26 for future purchases.\u003c\/p\u003e\n\u003cdiv class=\"row\"\u003e\n\u003cdiv id=\"description\" class=\"section-row section 1\"\u003e\n\u003cdiv class=\"section-text col-xs-12 rem-p-l rem-p-r\"\u003e\n\u003ch3\u003eIdeal for salt water aquariums and coral reef tanks.\u003c\/h3\u003e\n\u003cbr\u003e\n\u003cp\u003eDesigned exclusively for saltwater aquariums, the Hanna Instruments-755 offers a quick, easy and highly accurate method of checking Alkalinity.\u003c\/p\u003e\n\u003cbr\u003e\n\u003cp\u003eAlkalinity helps to maintain a stable pH, a vital factor for most aquatic life. Corals also need an adequate level of alkalinity in order to support healthy growth: if levels are too low, corals cannot precipitate and form their skeletons; if levels fluctuate too much or too quickly, growth can become impaired.\u003c\/p\u003e\n\u003cbr\u003e\n\u003cp\u003eThe more precise and stable the levels, the better the results. With regular, precise monitoring, fluctuations in levels can be quickly corrected, giving your corals the best chance of success.\u003c\/p\u003e\n\u003cbr\u003e\n\u003ch3\u003eIdeal for:\u003c\/h3\u003e\n\u003cbr\u003e\n\u003cul\u003e\n\u003cli\u003eSalt water aquariums\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul\u003e\n\u003cli\u003eCoral reef tanks\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cbr\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"row\"\u003e\n\u003cdiv class=\"section-row section four\"\u003e\n\u003cdiv class=\"section-text col-xs-12 col-sm-7 add-p-r rem-p-l\"\u003e\n\u003ch3\u003eMain Benefits\u003c\/h3\u003e\n\u003cbr\u003e\n\u003cul\u003e\n\u003cli\u003eTesting is quick and easy\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul\u003e\n\u003cli\u003eHigh precision results - more accurate than chemical test kits\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul\u003e\n\u003cli\u003eAuto shut-off feature means the Checker cannot be left on by mistake\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul\u003e\n\u003cli\u003eFully portable, fitting easily into both palm and pocket\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eSupplied with\u003c\/h3\u003e\n\u003cbr\u003e\n\u003cul\u003e\n\u003cli\u003e2 sample cuvettes\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul\u003e\n\u003cli\u003eCuvette cap\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul\u003e\n\u003cli\u003eStarter pack of reagents (Hanna Instruments-755-26)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul\u003e\n\u003cli\u003e1 x 1.5 AAA battery\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul\u003e\n\u003cli\u003eInstructions\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eAlso available: Hanna Instruments-755-11 Calibration Set\u003c\/p\u003e\n\u003cbr\u003e\n\u003c\/div\u003e\n\u003cbr\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Hanna Instruments","offers":[{"title":"Default Title","offer_id":40354397585559,"sku":"HI-755","price":71.35,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0574\/5511\/6439\/products\/hi-755_seawatermarine_alkalinity_colorimeter_-_checker_hc_0514d5c3-2df6-444f-a40e-a6633801036f.jpg?v=1624279475"},{"product_id":"hanna-instruments-770-silica-high-range-handheld-colorimeter-checker®hc","title":"Hanna Instruments-770 Silica High Range Handheld Colorimeter, Checker®HC","description":"\u003cp\u003eIdeal for fresh water aquariums, the Hanna Instruments-770 pocket checker is a simple and accurate way to measure high ranges of silica.\u003c\/p\u003e\u003cbr\u003e\u003cp\u003eChecker®HC is supplied with reagents for 6 tests. Use code Hanna Instruments-770-25 (25 tests) for future purchases.\u003c\/p\u003e\u003cbr\u003e\u003cdiv class=\"row\"\u003e\n\u003cbr\u003e\u003cdiv class=\"section-row section 1\" id=\"description\"\u003e\n\u003cbr\u003e\u003cdiv class=\"section-text col-xs-12 rem-p-l rem-p-r\"\u003e\n\u003cbr\u003e\u003cp\u003eThe Hanna Instruments-770 pocket checker is a simple and accurate way to measure high ranges of silica.\u003c\/p\u003e\n\u003cbr\u003e\u003cp\u003eThe Hanna Instruments-770 Checker for High Range Silica is simple to use following the steps detailed below:\u003c\/p\u003e\n\u003cbr\u003e\u003ch3\u003eKey features\u003c\/h3\u003e\n\u003cbr\u003e\u003cul\u003e\n\u003cbr\u003e\u003cli\u003eAccurate and easy to use\u003c\/li\u003e\n\u003cbr\u003e\u003cli\u003eAdaptation of EPA Diazotization method\u003c\/li\u003e\n\u003cbr\u003e\u003cli\u003e±2 ppm ±5% of reading accuracy\u003c\/li\u003e\n\u003cbr\u003e\u003cli\u003e1 ppm resolution\u003c\/li\u003e\n\u003cbr\u003e\u003cli\u003eDesigned to work with Hanna reagents\u003c\/li\u003e\n\u003cbr\u003e\u003cli\u003eLarge easy to read digits\u003c\/li\u003e\n\u003cbr\u003e\u003cli\u003eAuto shut-off\u003c\/li\u003e\n\u003cbr\u003e\n\u003c\/ul\u003e\n\u003cbr\u003e\u003cbr\u003e\u003cbr\u003e\u003ch3\u003eIdeal for\u003c\/h3\u003e\n\u003cbr\u003e\u003cul\u003e\n\u003cbr\u003e\u003cli\u003eAquaculture\u003c\/li\u003e\n\u003cbr\u003e\u003cli\u003eQuick on the spot analysis\u003c\/li\u003e\n\u003cbr\u003e\u003cli\u003eRoutine water quality testing\u003c\/li\u003e\n\u003cbr\u003e\n\u003c\/ul\u003e\n\u003cbr\u003e\n\u003c\/div\u003e\n\u003cbr\u003e\n\u003c\/div\u003e\n\u003cbr\u003e\n\u003c\/div\u003e\u003cbr\u003e\u003cdiv class=\"row\"\u003e\n\u003cbr\u003e\u003cdiv class=\"section-row section four\"\u003e\n\u003cbr\u003e\u003cdiv class=\"section-text col-xs-12 col-sm-7 add-p-r rem-p-l\"\u003e\n\u003cbr\u003e\u003ch3\u003eSupplied with\u003c\/h3\u003e\n\u003cbr\u003e\u003cul\u003e\n\u003cbr\u003e\u003cli\u003e2 sample cuvettes with caps\u003c\/li\u003e\n\u003cbr\u003e\u003cli\u003eReagents for 6 tests (re-ordering information Hanna Instruments-770-25 x 25 tests)\u003c\/li\u003e\n\u003cbr\u003e\u003cli\u003e1 x 1.5V AAA battery\u003c\/li\u003e\n\u003cbr\u003e\u003cli\u003eInstructions\u003c\/li\u003e\n\u003cbr\u003e\n\u003c\/ul\u003e\n\u003cbr\u003e\u003cp\u003eAlso available: Hanna Instruments-770-11 Calibration set\u003c\/p\u003e\n\u003cbr\u003e\u003cp\u003e\u003c\/p\u003e\n\u003cbr\u003e\n\u003c\/div\u003e\n\u003cbr\u003e\n\u003c\/div\u003e\n\u003cbr\u003e\n\u003c\/div\u003e","brand":"Hanna Instruments","offers":[{"title":"Default Title","offer_id":40354398699671,"sku":"HI-770","price":85.69,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0574\/5511\/6439\/products\/hi-770_silica_high_range_handheld_colorimeter_checker_hc_56abf7c5-f3e1-4f60-9830-4af8b8dc8e0d.jpg?v=1624279506"},{"product_id":"hanna-instruments-761-total-chlorine-ultra-low-range-handheld-colorimeter-checker®hc","title":"Hanna Instruments-761 Total Chlorine Ultra Low Range  Handheld Colorimeter, Checker HC","description":"\u003cdiv class=\"row\"\u003eThe Hanna Instruments-761 Checker is a simple, accurate, and cost effective way to measure ultra-low ranges of total chlorine.\u003cbr\u003e\n\u003cdiv id=\"description\" class=\"section-row section 1\"\u003e\n\u003cdiv class=\"section-text col-xs-12 rem-p-l rem-p-r\"\u003e\n\u003cp\u003eDesigned as a more accurate alternative to chemical test kits, this checker provides quick, accurate results in four easy steps\u003c\/p\u003e\nThe Hanna Instruments-761 uses an adaptation of the USEPA method 330.5. The reaction between the chlorine and DPD reagent causes a pink tint in the sample.\u003cbr\u003e\n\u003ch3\u003e\u003cbr\u003e\u003c\/h3\u003e\n\u003ch3\u003eFeatures\u003c\/h3\u003e\nSmall palm-sized design\u003c\/div\u003e\n\u003cdiv class=\"section-text col-xs-12 rem-p-l rem-p-r\"\u003e\n\u003cp\u003eAccurate from ±5ppb ± 5% of reading\u003c\/p\u003e\nDedicated to a single parameter\u003cbr\u003e\n\u003cp\u003eUses a single AAA battery\u003c\/p\u003e\nAuto Power Off after 10 minutes in inactivity\u003cbr\u003e\n\u003cp\u003eBuilt-in timer for timed reaction readings\u003c\/p\u003e\n\u003cbr\u003e\n\u003ch3\u003eIdeal for:\u003c\/h3\u003e\nWater Quality\u003cbr\u003e\n\u003cp\u003eEducation\u003c\/p\u003e\nWater Purification\u003cbr\u003e\n\u003cp\u003eEnvironmental\u003c\/p\u003e\n\u003cbr\u003e\u003cstrong\u003eOrder Information:\u003c\/strong\u003e\u003cbr\u003e\n\u003cp\u003eThe Hanna Instruments-761 Checker is supplied with 2 cuvettes and caps, reagent starter kit (6 packets for total chlorine ultra-low range - re-ordering information Hanna Instruments-761-25 x 25 tests), 1 x 1.5V AAA battery, and an instruction manual.\u003c\/p\u003e\n\u003cbr\u003e\n\u003cp\u003eAlso available: Calibration set Hanna Instruments-711-11\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFour steps. One click. Instant Readout\u003c\/strong\u003e.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"row\"\u003e\n\u003cdiv class=\"section-row section nine\"\u003e\n\u003cdiv class=\"col-xs-12 col-sm-6 rem-pad-mobile rem-p-l\"\u003e\n\u003cdiv class=\"section-text col-xs-7 col-sm-9\"\u003e\n\u003cp\u003e1. ‘Zero’ the Checker®HC with your vial inside\u003c\/p\u003e\n\u003c\/div\u003e\n2. Place a 10ml water sample into the vial and add your reagent\u003c\/div\u003e\n\u003cbr\u003e3. Place your vial into your Checker®HC\u003cbr\u003e\n\u003cdiv class=\"col-xs-12 col-sm-6 rem-pad-mobile rem-p-r\"\u003e\n\u003cdiv class=\"section-image col-xs-5 col-sm-3 circle-left\"\u003e\u003cbr\u003e\u003c\/div\u003e\n4. Press the button and read the results\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Hanna Instruments","offers":[{"title":"12\/2025","offer_id":54897205051765,"sku":"HI-761","price":71.35,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0574\/5511\/6439\/files\/total-chlorine-checker-ultra-low-range-0-to-500ppb.jpg?v=1733408724"},{"product_id":"hanna-instruments-753-chloride-handheld-colorimeter-checker®hc","title":"Hanna Instruments-753 Chloride Handheld Colorimeter, Checker®HC","description":"Ideal for drinking water, Hanna Instruments-753 is a simple, accurate, and cost effective way to measure chloride.\u003cbr\u003e\u003cp\u003eHanna Instruments-753 is a simple, accurate, and cost effective way to measure chloride. Designed as a more accurate alternative to chemical test kits, the Hanna Instruments-753 provides quick, accurate results in three easy steps.\u003c\/p\u003e\u003cbr\u003e\u003cp\u003eThe Hanna Instruments-753 uses an adaptation of the mercury (II) thiocyanate method.\u003c\/p\u003e\u003cbr\u003e\u003ch3\u003eIdeal for\u003c\/h3\u003e\u003cbr\u003e\u003cul\u003e\n\u003cbr\u003e\u003cli\u003eDrinking water\u003c\/li\u003e\n\u003cbr\u003e\u003cli\u003eWaste water\u003c\/li\u003e\n\u003cbr\u003e\u003cli\u003eBoiler and cooling towers\u003c\/li\u003e\n\u003cbr\u003e\n\u003c\/ul\u003e\u003cbr\u003e\u003ch3\u003eKey features\u003c\/h3\u003e\u003cbr\u003e\u003cul\u003e\n\u003cbr\u003e\u003cli\u003eSmall palm-sized design\u003c\/li\u003e\n\u003cbr\u003e\u003cli\u003eAccurate from ±0.5ppm ± 6% of reading\u003c\/li\u003e\n\u003cbr\u003e\u003cli\u003eDedicated to a single parameter\u003c\/li\u003e\n\u003cbr\u003e\u003cli\u003eUses a single AAA battery\u003c\/li\u003e\n\u003cbr\u003e\u003cli\u003eAuto Power Off after 10 minutes in inactivity\u003c\/li\u003e\n\u003cbr\u003e\u003cli\u003eBuilt-in timer for timed reaction readings\u003c\/li\u003e\n\u003cbr\u003e\n\u003c\/ul\u003e\u003cbr\u003e\u003ch3\u003eOrder Information\u003c\/h3\u003e\u003cbr\u003e\u003cp\u003eThe Hanna Instruments-753 is supplied with a reagent starter kit x 25 (Re-ordering information Hanna Instruments-753-25 x 25 tests), sample cuvettes with caps (2), syringes with tips (2), 1 x 1.5V AAA battery and an instruction manual.\u003c\/p\u003e\u003cbr\u003e\u003cp\u003eCalibration kit also available Hanna Instruments-753-11\u003c\/p\u003e","brand":"Hanna Instruments","offers":[{"title":"Default Title","offer_id":40354421047447,"sku":"HI-753","price":85.69,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0574\/5511\/6439\/products\/hi-753_chloride_handheld_colorimeter_checker_hc_7f70fe9a-aedd-4bbe-b2e0-f6d28b3ee06d.jpg?v=1624279890"},{"product_id":"hanna-instruments-764-nitrite-marine-ulr-handheld-colorimeter-checker®hc","title":"Hanna Instruments-764 Nitrite (Marine ULR) Handheld Colorimeter - Checker®HC","description":"\u003cp\u003eWith its fantastic ability to measure exceptionally low levels of nitrite, the Hanna Instruments-764 Nitrite Checker is great for aquarium maintenance.\u003c\/p\u003e\n\u003cdiv class=\"row\"\u003e\n\u003cdiv class=\"section-row section 1\" id=\"description\"\u003e\n\u003cdiv class=\"section-text col-xs-12 rem-p-l rem-p-r\"\u003e\n\u003cp\u003eNitrites are an intermediate form of nitrogen produced when ammonia is converted into nitrate during the nitrogen cycle. As organic matter decays, it produces ammonia; the highly toxic ammonia is converted into nitrite by bacteria; and the nitrite is then converted into nitrate by another bacteria.\u003c\/p\u003e\n\u003cbr\u003eNitrite is dangerous to aquatic life if it is allowed to build up, causing tissue damage that can lead to illness and death. By detecting even minute levels of nitrite, the Hanna Nitrite Checker can help aquarists to take action at the earliest possible moment and eliminate unnecessary suffering among the fish.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cdiv class=\"row\"\u003e\n\u003cbr\u003e\n\u003cdiv class=\"section-row section four\"\u003e\n\u003cbr\u003e\n\u003cdiv class=\"section-text col-xs-12 col-sm-7 add-p-r rem-p-l\"\u003e\n\u003cbr\u003e\n\u003ch3\u003eIdeal for:\u003c\/h3\u003e\n\u003cbr\u003e\u003cbr\u003e\n\u003cul\u003e\n\u003cul\u003e\n\u003cli\u003eSalt water aquariums\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/ul\u003e\n\u003cbr\u003e\n\u003cul\u003e\n\u003cul\u003e\n\u003cli\u003eCoral reef tanks\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/ul\u003e\n\u003cbr\u003e\n\u003cul\u003e\n\u003cul\u003e\n\u003cli\u003eFresh water tanks\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/ul\u003e\n\u003cbr\u003e\u003cbr\u003e\n\u003ch3\u003eMain Benefits:\u003c\/h3\u003e\n\u003cbr\u003e\u003cbr\u003e\n\u003cul\u003e\n\u003cul\u003e\n\u003cli\u003eTesting is quick and easy\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/ul\u003e\n\u003cbr\u003e\n\u003cul\u003e\n\u003cul\u003e\n\u003cli\u003eHigh precision results - more accurate than chemical test kits\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/ul\u003e\n\u003cbr\u003e\n\u003cul\u003e\n\u003cul\u003e\n\u003cli\u003eAuto shut-off feature means the Checker cannot be left on by mistake\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/ul\u003e\n\u003cbr\u003e\n\u003cul\u003e\n\u003cul\u003e\n\u003cli\u003eFully portable, fitting easily into both palm and pocket\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/ul\u003e\n\u003cbr\u003e\u003cbr\u003e\n\u003ch3\u003eSupplied with:\u003c\/h3\u003e\n\u003cbr\u003e\u003cbr\u003e\n\u003cul\u003e\n\u003cul\u003e\n\u003cli\u003e2 sample cuvettes\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/ul\u003e\n\u003cbr\u003e\n\u003cul\u003e\n\u003cul\u003e\n\u003cli\u003eCuvette cap\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/ul\u003e\n\u003cbr\u003e\n\u003cul\u003e\n\u003cul\u003e\n\u003cli\u003eStarter pack of reagents x 6 tests (re-ordering information: Hanna Instruments-764-25 x 25 tests)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/ul\u003e\n\u003cbr\u003e\n\u003cul\u003e\n\u003cul\u003e\n\u003cli\u003e1 x 1.5 AAA battery\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/ul\u003e\n\u003cbr\u003e\n\u003cul\u003e\n\u003cul\u003e\n\u003cli\u003eInstructions\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/ul\u003e\n\u003cbr\u003e\u003cbr\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cbr\u003e\n\u003cp\u003eAlso Available: Calibration set Hanna Instruments-764-11.\u003c\/p\u003e\n\u003cbr\u003e\n\u003c\/div\u003e\n\u003cbr\u003e\n\u003c\/div\u003e\n\u003cbr\u003e\n\u003c\/div\u003e","brand":"Hanna Instruments","offers":[{"title":"Default Title","offer_id":40354428223639,"sku":"HI-764","price":71.35,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0574\/5511\/6439\/files\/3_016cb882-72ea-43b9-b59f-e812e498d370.jpg?v=1732284653"},{"product_id":"hanna-instruments-749-chromium-vi-low-range-handheld-colorimeter-checker®hc","title":"Hanna Instruments-749 Chromium VI Low Range Handheld Colorimeter, Checker®HC","description":"\u003cp\u003eIdeal for water quality testing, the Hanna Instruments-749 Checker is a simple, accurate, and cost effective way to measure low ranges of Chromium VI in fresh water.\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003eChecker®HC is supplied with reagents for 6 tests. Use code Hanna Instruments-749-25 (25 tests) for future purchases.\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003eThe Hanna Instruments-749 Checker is a simple, accurate, and cost effective way to measure low ranges of chromium VI in fresh water.\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003eDesigned as a more accurate alternative to chemical test kits, the Hanna Instruments-749 provides quick, accurate results in four easy steps.\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003eThe Hanna Instruments-749 uses an adaptation of the ASTM Manual of Water and Environmental Technology D1687-92, Diphenylcarbohydrazide method. The reaction between chromium VI and the reagent causes a purple tint in the sample.\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003ch3\u003eFeatures:\u003c\/h3\u003e\n\u003cp\u003e\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eSmall palm-sized design\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eAccurate from ±2 ppb ±4% of reading\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eDedicated to a single parameter\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eUses a single AAA battery\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eAuto Power Off after 10 minutes in inactivity\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eBuilt-in timer for timed reaction readings\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003ch3\u003eIdeal for:\u003c\/h3\u003e\n\u003cp\u003e\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eWater Quality\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eEducation\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003ePlating\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eEnvironmental\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003ch3\u003eOrder Information:\u003c\/h3\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003eThe Hanna Instruments-749 Checker®HC is supplied with 2 cuvettes and caps, reagent starter kit (6 packets of chromium VI LR reagent - re-ordering information Hanna Instruments-749-25 x 25 tests), 1 x 1.5V AAA battery, and an instruction manual.\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003eAlso available: Calibration set Hanna Instruments-749-11.\u003c\/p\u003e","brand":"Hanna Instruments","offers":[{"title":"Default Title","offer_id":40354448048279,"sku":"HI-749","price":82.18,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0574\/5511\/6439\/products\/hi-749_chromium_vi_low_range_handheld_colorimeter_checker_hc_ad55053b-c694-4d16-bea0-ae22ab6140e3.jpg?v=1686669817"},{"product_id":"hanna-instruments-706-phosphorus-high-range-handheld-colorimeter-checker®hc","title":"Hanna Instruments-706 Phosphorus High Range Handheld Colorimeter - Checker®HC","description":"\u003cp\u003eIdeal for fresh water aquariums, the HI-706 High Range Phosphorus Checker bridges the gap between simple chemical test kits and professional instrumentation.\u003cbr data-mce-fragment=\"1\"\u003e\u003cbr data-mce-fragment=\"1\"\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eRange\u003c\/strong\u003e: 0.0 to 15.0ppm\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eMain Benefits\u003c\/strong\u003e\u003cbr\u003eTesting is quick and easy\u003cbr\u003eHigh precision results - more accurate than chemical test kits\u003cbr\u003eAuto shut-off feature means the Checker cannot be left on by mistake\u003cbr\u003eFully portable, fitting easily into both palm and pocket\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eSupplied with:\u003c\/strong\u003e\u003cbr\u003e2 sample cuvettes\u003cbr\u003eCuvette cap\u003cbr\u003eStarter pack of reagents x 20 tests (re-ordering information: HI-706-25 x 40 tests)\u003cbr\u003e1 x 1.5 AAA battery\u003cbr\u003eInstructions\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eSku:HI-706\u003c\/p\u003e","brand":"Hanna Instruments","offers":[{"title":"Default Title","offer_id":40354485698711,"sku":"HI-706","price":85.69,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0574\/5511\/6439\/files\/4WITHWATERMARK_46c96489-a84a-447c-9ad9-2c08064e53b5.jpg?v=1705499208"},{"product_id":"hanna-instruments-709-manganese-high-range-handheld-colorimeter-checker®hc","title":"Hanna Instruments-709 Manganese High Range Handheld Colorimeter - Checker®HC","description":"\u003cp\u003eIdeal for plating, the Hanna Instruments-709 high range Manganese Checker is a simple, accurate and cost effective way to measure high ranges of manganese in water.\u003c\/p\u003e\n\u003cp\u003eChecker®HC is supplied with reagents for 6 tests. Use code Hanna Instruments-709-25 (25 tests) for future purchases.\u003c\/p\u003e\n\u003ch3\u003eHanna Instruments-709 Manganese High Range Handheld Colorimeter - Checker®HC\u003c\/h3\u003e\n\u003cp\u003eThe Hanna Instruments-709 high range Manganese Checker is a simple, accurate and cost effective way to measure high ranges of manganese in water.\u003c\/p\u003e\n\u003cp\u003eDesigned as a more accurate alternative to chemical test kits, the Hanna Instruments-709 provides quick, accurate results in four easy steps.\u003c\/p\u003e\n\u003cp\u003eHanna Instruments-709 uses an adaptation of the Standard Methods for the Examination of Water and Wastewater, 18th edition, Periodate method. The reaction between manganese and the reagents cause a pink tint in the sample.\u003c\/p\u003e\n\u003ch3\u003eIdeal for\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eWater quality\u003c\/li\u003e\n\u003cli\u003eEducation\u003c\/li\u003e\n\u003cli\u003eIndustrial\u003c\/li\u003e\n\u003cli\u003eEnvironmental\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eKey features\u003c\/h3\u003e\n\u003cp\u003e\u003cbr\u003e\u003cspan style=\"font-size: 0.875rem;\"\u003eSmall palm-sized design\u003c\/span\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eAccurate from ± 0.02 ppm ±5% of reading\u003c\/li\u003e\n\u003cli\u003eDedicated to a single parameter\u003c\/li\u003e\n\u003cli\u003eAuto power off after 10 minutes of inactivity\u003c\/li\u003e\n\u003cli\u003eBuilt-in timer for timed reaction readings\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003c\/h3\u003e\n\u003ch3\u003eOrder Information\u003c\/h3\u003e\n\u003cp\u003eThe Hanna Instruments-709 Manganese High Range Checker is supplied with sample cuvettes with caps (2), Manganese High reagent starter kit (Hanna Instruments-709-25 reagents for 25 tests), glass cylinders with rubber cap (2), battery, instructions and quick start guide.\u003c\/p\u003e\n\u003cp\u003eYou can also buy Hanna Instruments-709-11 Calibration check set. Replacement reagents Hanna Instruments-709-25 Manganese high range reagents 25 tests.\u003c\/p\u003e","brand":"Hanna Instruments","offers":[{"title":"Default Title","offer_id":40354486059159,"sku":"HI-709","price":85.69,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0574\/5511\/6439\/products\/hi709_b52d5de1-de01-47d2-8a71-bbf3641642c6.jpg?v=1624280636"},{"product_id":"hanna-instruments-701-free-chlorine-handheld-colorimeter-checker®hc","title":"Hanna Instruments-701 Free Chlorine Handheld Colorimeter - Checker®HC","description":"\u003cp\u003eIdeal for swimming pools, spas and aquariums.\u003c\/p\u003e\n\u003cp\u003eChlorine is the most common water disinfectant and by monitoring chlorine regularly and accurately, serious health and safety risks can be avoided.\u003c\/p\u003e\n\u003cp\u003eCan also be used to determine chlorine levels in fish tanks for optimum fish and plant health. Use alongside recommended dechlorinators.\u003c\/p\u003e\n\u003cp\u003eChecker®HC is supplied with reagents for 6 tests. Use code Hanna Instruments-701-25 (25 tests) for future purchases.\u003c\/p\u003e\n\u003cdiv class=\"row\"\u003e\n\u003cdiv class=\"section-row section 1\" id=\"description\"\u003e\n\u003cdiv class=\"section-text col-xs-12 rem-p-l rem-p-r\"\u003e\n\u003ch3\u003eIdeal for swimming pools, spas and aquariums\u003c\/h3\u003e\n\u003cp\u003eChlorine is the most common water disinfectant and by monitoring chlorine regularly and accurately, serious health and safety risks can be avoided.\u003c\/p\u003e\n\u003cp\u003eThe contoured style of the Hanna Instruments-701 Free Chlorine Checker is designed to fit in the palm of your hand. The large LCD is easy to read and the auto shut-off feature ensures the battery life will not be drained if you forget to turn it off.\u003c\/p\u003e\n\u003cp\u003eCan also be used to determine chlorine levels in fish tanks for optimum fish and plant health. Use alongside recommended dechlorinators.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"row\"\u003e\n\u003cdiv class=\"section-row section four\"\u003e\n\u003cdiv class=\"section-text col-xs-12 col-sm-7 add-p-r rem-p-l\"\u003e\n\u003ch3\u003eIdeal for\u003c\/h3\u003e\n\u003cul\u003e\n\u003cul\u003e\n\u003cli\u003eSwimming pools and spas\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/ul\u003e\n\u003cul\u003e\n\u003cul\u003e\n\u003cli\u003eFruit, vegetable and salad washing\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/ul\u003e\n\u003cul\u003e\n\u003cul\u003e\n\u003cli\u003eDisinfection\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/ul\u003e\n\u003cul\u003e\n\u003cul\u003e\n\u003cli\u003eAquaculture\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eMain Benefits\u003c\/h3\u003e\n\u003cul\u003e\n\u003cul\u003e\n\u003cli\u003eTesting is quick and easy\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/ul\u003e\n\u003cul\u003e\n\u003cul\u003e\n\u003cli\u003eHigh precision results - more accurate than chemical test kits\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/ul\u003e\n\u003cul\u003e\n\u003cul\u003e\n\u003cli\u003eAuto shut-off feature means the Checker cannot be left on by mistake\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/ul\u003e\n\u003cul\u003e\n\u003cul\u003e\n\u003cli\u003eFully portable, fitting easily into both palm and pocket\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eSupplied with\u003c\/h3\u003e\n\u003cul\u003e\n\u003cul\u003e\n\u003cli\u003e2 sample cuvettes\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/ul\u003e\n\u003cul\u003e\n\u003cul\u003e\n\u003cli\u003eCuvette cap\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/ul\u003e\n\u003cul\u003e\n\u003cul\u003e\n\u003cli\u003eStarter pack of reagents (re-ordering information - Hanna Instruments-701-25\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/ul\u003e\n\u003cul\u003e\n\u003cul\u003e\n\u003cli\u003e1 x 1.5 AAA battery\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/ul\u003e\n\u003cul\u003e\n\u003cul\u003e\n\u003cli\u003eInstructions\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFour steps, one click instant readout\u003c\/h3\u003e\n\u003cul\u003e\n\u003cul\u003e\n\u003cli\u003eZero the Checker\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/ul\u003e\n\u003cul\u003e\n\u003cul\u003e\n\u003cli\u003eAdd reagent\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/ul\u003e\n\u003cul\u003e\n\u003cul\u003e\n\u003cli\u003eInsert sample into Checker\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/ul\u003e\n\u003cul\u003e\n\u003cul\u003e\n\u003cli\u003ePress button for results\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Hanna Instruments","offers":[{"title":"Default Title","offer_id":40354486091927,"sku":"HI-701","price":71.35,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0574\/5511\/6439\/products\/hi701_300caf6c-822a-477d-baf5-ad9ce80349fc.jpg?v=1624280638"},{"product_id":"hanna-instruments-717-high-range-phosphate-colorimeter-checker®hc","title":"Hanna Instruments-717 High Range Phosphate Colorimeter - Checker HC","description":"\u003cp\u003eIdeal for aquariums.\u003c\/p\u003e\n\u003cdiv class=\"feature\"\u003e\n\u003cspan\u003e \u003c\/span\u003e\u003cspan\u003e0.0 to 30.0 ppm\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"feature\"\u003e\n\u003csvg viewbox=\"0 0 13.987 10.123\" height=\"10.123\" width=\"13.987\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"\u003e\u003cg transform=\"translate(-305.142 -213.686)\"\u003e\u003cpath transform=\"translate(0)\" d=\"M309.809,222a3.892,3.892,0,0,1,.262-.345q3.768-3.778,7.539-7.551a2.462,2.462,0,0,1,.289-.267.763.763,0,0,1,1.017.106.788.788,0,0,1,.043,1.025,2.512,2.512,0,0,1-.188.2l-8.273,8.275a.831.831,0,0,1-1.394-.01q-1.854-1.854-3.707-3.71a.8.8,0,0,1-.182-.915.727.727,0,0,1,.818-.43,1.16,1.16,0,0,1,.535.3c1,.985,1.989,1.983,2.979,2.98A3.938,3.938,0,0,1,309.809,222Z\" class=\"a\"\u003e\u003c\/path\u003e\u003c\/g\u003e\u003c\/svg\u003e\u003cspan\u003e \u003c\/span\u003e\u003cspan\u003ePhosphate\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"feature\"\u003e\n\u003cspan\u003e\u003c\/span\u003e\u003cbr\u003e\n\u003c\/div\u003e\n\u003cp\u003eThe contoured style of the Hanna Instruments-717 Phosphate, high range Checker is designed to fit in the palm of your hand.\u003c\/p\u003e\n\u003cp\u003eChecker®HC is supplied with reagents for 20 tests. Use code Hanna Instruments-717-25 (40 tests) for future purchases.\u003c\/p\u003e\n\u003cdiv class=\"row\"\u003e\n\u003cdiv id=\"description\" class=\"section-row section 1\"\u003e\n\u003cdiv class=\"section-text col-xs-12 rem-p-l rem-p-r\"\u003e\n\u003cp\u003eThe large LCD is easy to read and the auto shut-off feature ensures the battery life will not be drained if you forget to turn it off.\u003c\/p\u003e\n\u003ch3\u003eIdeal for\u003c\/h3\u003e\n\u003cul\u003e\n\u003cul\u003e\n\u003cli\u003eAquaculture\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/ul\u003e\n\u003cul\u003e\n\u003cul\u003e\n\u003cli\u003eGeneral water quality testing\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/ul\u003e\n\u003cul\u003e\n\u003cul\u003e\n\u003cli\u003eWaste water applications\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/ul\u003e\n\u003cul\u003e\n\u003cul\u003e\n\u003cli\u003eDrinking water analysis\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/ul\u003e\n\u003cul\u003e\n\u003cul\u003e\n\u003cli\u003eAgriculture\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/ul\u003e\n\u003cbr\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"row\"\u003e\n\u003cdiv class=\"section-row section four\"\u003e\n\u003cdiv class=\"section-text col-xs-12 col-sm-7 add-p-r rem-p-l\"\u003e\n\u003ch3\u003eMain Benefits\u003c\/h3\u003e\n\u003cul\u003e\n\u003cul\u003e\n\u003cli\u003eTesting is quick and easy\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/ul\u003e\n\u003cul\u003e\n\u003cul\u003e\n\u003cli\u003eHigh precision results - more accurate than chemical test kits\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/ul\u003e\n\u003cul\u003e\n\u003cul\u003e\n\u003cli\u003eAuto shut-off feature means the Checker cannot be left on by mistake\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/ul\u003e\n\u003cul\u003e\n\u003cul\u003e\n\u003cli\u003eFully portable, fitting easily into both palm and pocket\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eSupplied with\u003c\/h3\u003e\n\u003cul\u003e\n\u003cul\u003e\n\u003cli\u003e2 sample cuvettes\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/ul\u003e\n\u003cul\u003e\n\u003cul\u003e\n\u003cli\u003eCuvette cap\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/ul\u003e\n\u003cul\u003e\n\u003cul\u003e\n\u003cli\u003eStarter pack of reagents x 20 tests \u003cstrong\u003e(re-ordering information: Hanna Instruments-717-25 x 40 tests)\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/ul\u003e\n\u003cul\u003e\n\u003cul\u003e\n\u003cli\u003e1 x 1.5 AAA battery\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/ul\u003e\n\u003cul\u003e\n\u003cul\u003e\n\u003cli\u003eInstructions\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/ul\u003e\n\u003cp\u003eAlso available: \u003cstrong\u003eHanna Instruments-717-11 Calibration set\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Hanna Instruments","offers":[{"title":"Default Title","offer_id":40354486124695,"sku":"HI-717","price":71.35,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0574\/5511\/6439\/files\/2_fd18fb91-f69b-4837-ab89-b0875db9a7cd.jpg?v=1728299924"},{"product_id":"hanna-instruments-719-magnesium-hardness-handheld-colorimeter-checker®hc","title":"Hanna Instruments-719 Magnesium Hardness Handheld Colorimeter - Checker®HC","description":"\u003cp\u003eIdeal for wastewater, the Hanna Instruments-719 pocket checker is a simple and accurate way to measure magnesium hardness.\u003c\/p\u003e\n\u003cbr\u003e\n\u003cp\u003eChecker®HC is supplied with reagents for 25 tests. Use code Hanna Instruments-719-25 (25 tests) for future purchases.\u003c\/p\u003e\n\u003cbr\u003e\n\u003cp\u003eThe Hanna Instruments-719 pocket checker is a simple and accurate way to measure magnesium hardness.\u003c\/p\u003e\n\u003cbr\u003e\n\u003cp\u003eThe Hanna Instruments-719 uses an adaptation of the Standard Methods for the Examination of Water and Wastewater, 18th edition, EDTA colorimetric method. The reaction between magnesium and reagents causes a reddish violet tint in the sample.\u003c\/p\u003e\n\u003cbr\u003e\n\u003ch3\u003eKey features\u003c\/h3\u003e\n\u003cbr\u003e\u003cbr\u003e\n\u003cul\u003e\n\u003cul\u003e\n\u003cli\u003eAccurate and easy to use\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/ul\u003e\n\u003cbr\u003e\n\u003cul\u003e\n\u003cul\u003e\n\u003cli\u003e±0.20 ppm ±5% of reading\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/ul\u003e\n\u003cbr\u003e\n\u003cul\u003e\n\u003cul\u003e\n\u003cli\u003e0.01 ppm resolution\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/ul\u003e\n\u003cbr\u003e\n\u003cul\u003e\n\u003cul\u003e\n\u003cli\u003eDesigned to work with Hanna reagents\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/ul\u003e\n\u003cbr\u003e\n\u003cul\u003e\n\u003cul\u003e\n\u003cli\u003eLarge easy to read digits\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/ul\u003e\n\u003cbr\u003e\n\u003cul\u003e\n\u003cul\u003e\n\u003cli\u003eAuto shut-off\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/ul\u003e\n\u003cbr\u003e\u003cbr\u003e\n\u003ch3\u003eIdeal for\u003c\/h3\u003e\n\u003cbr\u003e\n\u003cul\u003e\n\u003cul\u003e\n\u003cli\u003eWater purification systems\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/ul\u003e\n\u003cbr\u003e\n\u003cul\u003e\n\u003cul\u003e\n\u003cli\u003eHeating and cooling systems\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/ul\u003e\n\u003cbr\u003e\n\u003cul\u003e\n\u003cul\u003e\n\u003cli\u003eDrinking water\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/ul\u003e\n\u003cbr\u003e\n\u003cul\u003e\n\u003cli\u003eWastewater\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cbr\u003e\n\u003ch3\u003eSupplied with\u003c\/h3\u003e\n\u003cul\u003e\n\u003cul\u003e\n\u003cli\u003e2 sample cuvettes with caps\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/ul\u003e\n\u003cbr\u003e\n\u003cul\u003e\n\u003cul\u003e\n\u003cli\u003eReagents for 25 tests (re-ordering information Hanna Instruments-719-25 x 25 tests)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/ul\u003e\n\u003cbr\u003e\n\u003cul\u003e\n\u003cul\u003e\n\u003cli\u003eSyringe with tip\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/ul\u003e\n\u003cbr\u003e\n\u003cul\u003e\n\u003cul\u003e\n\u003cli\u003ePlastic beaker\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/ul\u003e\n\u003cbr\u003e\n\u003cul\u003e\n\u003cul\u003e\n\u003cli\u003e1 x 1.5V AAA battery\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/ul\u003e\n\u003cbr\u003e\n\u003cul\u003e\n\u003cli\u003eInstructions\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cbr\u003e\n\u003cp\u003eAlso available: Calibration set Hanna Instruments-719-11.\u003c\/p\u003e","brand":"Hanna Instruments","offers":[{"title":"Default Title","offer_id":40354486419607,"sku":"HI-719","price":85.69,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0574\/5511\/6439\/products\/hi719_0f0dafc3-f3d3-423e-b64b-eac0ed1eaa80.jpg?v=1624280642"},{"product_id":"hanna-instruments-720-calcium-hardness-handheld-colorimeter-checker®hc","title":"Hanna Instruments-720 Calcium Hardness Handheld Colorimeter - Checker HC","description":"\u003cp\u003eThe Hanna Instruments-720 Calcium Hardness Checker is a simple, accurate and cost effective way to measure low ranges of copper in water.\u003c\/p\u003e\n\u003cp\u003eChecker®HC is supplied with reagents for 25 tests. Use code Hanna Instruments-720-25 (25 tests) for future purchases.\u003c\/p\u003e\n\u003cp\u003eThe Hanna Instruments-720 Calcium Hardness Checker is a simple, accurate and cost effective way to measure low ranges of copper in water.\u003c\/p\u003e\n\u003cp\u003eDesigned as a more accurate alternative to chemical test kits, the Hanna Instruments-720 provides quick, accurate results in four easy steps.\u003c\/p\u003e\n\u003cp\u003eHanna Instruments-720 uses an adaptation of the standard methods for the Examination of Water and Wastewater, 18th edition, Calmagite method. The reaction between calcium and the reagents cause a reddish-violet tint in the sample.\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003ch3\u003eIdeal for\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eWater purification systems\u003c\/li\u003e\n\u003cli\u003eHeating and cooling systems\u003c\/li\u003e\n\u003cli\u003eDrinking water\u003c\/li\u003e\n\u003cli\u003eWastewater\u003c\/li\u003e\n\u003cli\u003ePlating\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003ch3\u003eKey features\u003c\/h3\u003e\n\u003ch3\u003e\u003cstrong\u003eSmall palm-sized design\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eAccurate from ± 0.20 ppm ±5% of reading\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul\u003e\n\u003cli\u003eDedicated to a single parameter\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul\u003e\n\u003cli\u003eAuto power off after 10 minutes of inactivity\u003c\/li\u003e\n\u003cli\u003eBuilt-in timer for timed reaction readings\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003ch3\u003eOrder Information\u003c\/h3\u003e\n\u003ch3\u003eThe Hanna Instruments-720 Calcium Hardness Checker is supplied with sample cuvettes with caps (2), calcium hardness reagent starter kit x 25 (re-ordering information Hanna Instruments-720-25 x 25 tests), syringes with tips (2), plastic beaker, battery, instructions and quick start guide.\u003c\/h3\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003eAlso available: Calibration set Hanna Instruments-720-11.\u003c\/p\u003e","brand":"Hanna Instruments","offers":[{"title":"Default Title","offer_id":40354486452375,"sku":"HI-720","price":79.42,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0574\/5511\/6439\/files\/1_8eb01646-8461-434c-90a9-cfc0c9abe132.jpg?v=1728567735"},{"product_id":"hanna-instruments-721-high-range-iron-handheld-colorimeter-checker®hc","title":"Hanna Instruments-721 High Range Iron Handheld Colorimeter - Checker®HC","description":"\u003cp\u003eThe Hanna Instruments-721 pocket checker for iron gives quick, accurate results at the price of a chemical test kit.\u003c\/p\u003e\n\u003cp\u003eChecker®HC is supplied with reagents for 6 tests. Use code Hanna Instruments-721-25 (25 tests) for future purchases.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eIdeal for:\u003c\/strong\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eSwimming pools and spas\u003c\/li\u003e\n\u003cli\u003eAquaculture\u003c\/li\u003e\n\u003cli\u003eQuality control and ground water monitoring\u003c\/li\u003e\n\u003cli\u003eAgriculture and small holdings\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cdiv class=\"row\"\u003e\n\u003cdiv class=\"section-row section 1\" id=\"description\"\u003e\n\u003cstrong\u003eHanna Instruments-721 High Range Iron Handheld Colorimeter - Checker®HC\u003c\/strong\u003e\n\u003cdiv class=\"section-text col-xs-12 rem-p-l rem-p-r\"\u003e\n\u003cbr\u003e\n\u003cp\u003eAbout 6.3% of the earth crust is made of iron with 43% of this amount held in the soil. As a result, iron is naturally present in most water supplies.\u003c\/p\u003e\n\u003cbr\u003e\n\u003cp\u003eLeft in the water, iron will not only stain pipework and swimming pool surfaces, or poison aquatic life, it will also affect the water taste and cause problems with animal feed lines.\u003c\/p\u003e\n\u003cbr\u003e\n\u003cp\u003eTesting should therefore form an important part of any water monitoring process - particularly if you are checking your pool, watching the quality of water in your fish tank or needing to monitor water run-off.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"row\"\u003e\n\u003cstrong\u003eKey features\u003c\/strong\u003e\n\u003cdiv class=\"section-row section four\"\u003e\n\u003cdiv class=\"section-text col-xs-12 col-sm-7 add-p-r rem-p-l\"\u003e\n\u003cbr\u003e\n\u003cul\u003e\n\u003cli\u003eAccurate and easy to use\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul\u003e\n\u003cli\u003ePhenanthroline method\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul\u003e\n\u003cli\u003eAccuracy ±0.04 mg\/L (ppm)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul\u003e\n\u003cli\u003e0.01 mg\/L (ppm) resolution\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul\u003e\n\u003cli\u003eDesigned to work with Hanna reagents\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul\u003e\n\u003cli\u003eLarge easy to read digits\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul\u003e\n\u003cli\u003eAuto shut-off\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul\u003e\n\u003cli\u003eFits into the palm of your hand\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cstrong\u003eSupplied with:\u003c\/strong\u003e\u003cbr\u003e\n\u003cul\u003e\n\u003cli\u003e2 sample cuvettes\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul\u003e\n\u003cli\u003e1 black cuvette cap\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul\u003e\n\u003cli\u003eStarter pack of 6 reagents for Iron (re-ordering information Hanna Instruments-721-25 x 25 tests)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul\u003e\n\u003cli\u003e1 x 1.5V AAA battery\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul\u003e\n\u003cli\u003eInstructions\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Hanna Instruments","offers":[{"title":"Default Title","offer_id":40354486485143,"sku":"HI-721","price":71.35,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0574\/5511\/6439\/products\/hi721_1a2c8da1-b02b-4597-b66c-cecca14216bb.jpg?v=1624280667"},{"product_id":"hanna-instruments-715-ammonia-medium-range-handheld-colorimeter-checker®hc","title":"Hanna Instruments-715 Ammonia Medium Range Handheld Colorimeter - Checker®HC","description":"\u003cp\u003eIdeal for fresh water aquariums, the Hanna Instruments-715 Checker is a simple, accurate, and cost effective way to measure medium ranges of Ammonia in fresh water.\u003c\/p\u003e\n\u003cp\u003eChecker®HC is supplied with reagents for 25 tests. Use code Hanna Instruments-715-26 for future purchases.\u003c\/p\u003e\n\u003cp\u003eThe Hanna Instruments-715 Checker is a simple, accurate, and cost effective way to measure medium ranges of ammonia in fresh water.\u003c\/p\u003e\n\u003cp\u003eDesigned as a more accurate alternative to chemical test kits, the Hanna Instruments-715 provides quick, accurate results in four easy steps.\u003c\/p\u003e\n\u003cp\u003eThe Hanna Instruments-715 uses an adaptation of the ASTM Manual of water and Environmental Technology D1426-93, Nessler Method. The reaction between ammonia and reagents causes a yellow tint in the sample.\u003c\/p\u003e\n\u003ch3\u003eFeatures:\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eSmall palm-sized design\u003c\/li\u003e\n\u003cli\u003eAccurate from ±0.05ppm ±5% of reading\u003c\/li\u003e\n\u003cli\u003eDedicated to a single parameter\u003c\/li\u003e\n\u003cli\u003eUses a single AAA battery\u003c\/li\u003e\n\u003cli\u003eAuto Power Off after 10 minutes in inactivity\u003c\/li\u003e\n\u003cli\u003eBuilt-in timer for timed reaction readings\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eIdeal for:\u003cbr\u003e\n\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eWater Quality\u003c\/li\u003e\n\u003cli\u003eEducation\u003c\/li\u003e\n\u003cli\u003eAquariums\u003c\/li\u003e\n\u003cli\u003eEnvironmental\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eOrder Information:\u003c\/h3\u003e\n\u003cp\u003eThe Hanna Instruments-715 Checker is supplied with 2 cuvettes and caps, Ammonia MR reagents x 25 tests (Hanna Instruments-715-25), 1 x 1.5V AAA battery, and an instruction manual.\u003c\/p\u003e\n\u003cp\u003eNot included: Calibration set Hanna Instruments-715-11.\u003c\/p\u003e","brand":"Hanna Instruments","offers":[{"title":"Default Title","offer_id":40354493825175,"sku":"HI-715","price":85.69,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0574\/5511\/6439\/products\/image_12296_d909a973-0073-4ba0-9f62-b902a1dd4388.jpg?v=1624280734"},{"product_id":"hanna-instruments-733-ammonia-high-range-handheld-colorimeter-0-0-99-9ppm-checker®hc","title":"Hanna Instruments-733 Ammonia High Range Handheld Colorimeter (0.0-99.9ppm) Checker®HC","description":"\u003cp\u003eThe Hanna Instruments-733 Checker is a simple, accurate, and cost effective way to measure high ranges of ammonia in fresh water.\u003c\/p\u003e\n\u003cp\u003eChecker®HC is supplied with reagents for 10 tests. Use code Hanna Instruments-733-25 for future purchases.\u003c\/p\u003e\n\u003cdiv class=\"row\"\u003eThe Hanna Instruments-733 Checker is a simple, accurate, and cost effective way to measure high ranges of ammonia in fresh water.\u003cbr\u003e\n\u003cdiv class=\"section-row section 1\" id=\"description\"\u003e\n\u003cdiv class=\"section-text col-xs-12 rem-p-l rem-p-r\"\u003e\n\u003cp\u003eDesigned as a more accurate alternative to chemical test kits, the Hanna Instruments-733 provides quick, accurate results in four easy steps.\u003c\/p\u003e\n\u003cbr\u003eThe Hanna Instruments-733 uses an adaptation of the ASTM Manual of water and Environmental Technology D1426-92, Nessler Method. The reaction between ammonia and reagents causes a yellow tint in the sample.\u003cbr\u003e\n\u003ch3\u003e\u003cbr\u003e\u003c\/h3\u003e\n\u003ch3\u003eIdeal for:\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eWater Quality\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul\u003e\n\u003cli\u003eEducation\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul\u003e\n\u003cli\u003eWastewater\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul\u003e\n\u003cli\u003eFreshwater Aquariums\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul\u003e\n\u003cli\u003eEnvironmental\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"row\"\u003e\n\u003cdiv class=\"section-row section four\"\u003e\n\u003cbr\u003e\u003cstrong\u003eFeatures\u003c\/strong\u003e\n\u003cdiv class=\"section-text col-xs-12 col-sm-7 add-p-r rem-p-l\"\u003e\n\u003cbr\u003e\n\u003cul\u003e\n\u003cli\u003ePalm-sized design\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul\u003e\n\u003cli\u003e±1.0ppm ±5% of reading\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul\u003e\n\u003cli\u003eDedicated to a single parameter\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul\u003e\n\u003cli\u003eUses a single AAA battery\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul\u003e\n\u003cli\u003eAuto Power Off after 10 minutes in inactivity\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul\u003e\n\u003cli\u003eBuilt-in timer for timed reaction readings\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Hanna Instruments","offers":[{"title":"Default Title","offer_id":40354493923479,"sku":"HI-733","price":85.69,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0574\/5511\/6439\/files\/1_5a7ae54f-5317-4ba1-aafb-e3bebe7d21b3.jpg?v=1739525688"},{"product_id":"hanna-instruments-711-total-chlorine-handheld-colorimeter-checker®hc","title":"Hanna Instruments-711 Total Chlorine Handheld Colorimeter - Checker®HC","description":"\u003cp\u003eIdeal for swimming pools, spas and aquariums.\u003c\/p\u003e\n\u003cp\u003eChlorine is the most common water disinfectant. Once in water, it presents as free chlorine and total chlorine.\u003c\/p\u003e\n\u003cp\u003eChecker®HC is supplied with reagents for 6 tests. Use code Hanna Instruments-711-25 (25 tests) for future purchases.\u003c\/p\u003e\n\u003cdiv class=\"row\"\u003e\n\u003cdiv id=\"description\" class=\"section-row section 1\"\u003e\n\u003cdiv class=\"section-text col-xs-12 rem-p-l rem-p-r\"\u003e\n\u003ch3\u003eIdeal for swimming pools, spas and aquariums\u003c\/h3\u003e\n\u003cp\u003eChlorine is the most common water disinfectant. Once in water, it presents as free chlorine and total chlorine.\u003c\/p\u003e\n\u003cp\u003eFree chlorine is the chlorine that is available in the water to tackle bacteria. As the process of disinfection takes place, the levels of free chlorine will reduce. Total chlorine is the measurement of free and used chlorine in the water.\u003c\/p\u003e\n\u003cp\u003eIf the total chlorine is high but the free chlorine is low or non-existent, then there is insufficient chlorine in the water to deal with the levels of contamination.\u003c\/p\u003e\n\u003cp\u003eFree chlorine is the most frequently tested of the two chemicals. By checking for the two as part of a rigorous testing procedure, adjustments in chlorine levels can be made quickly and easily and a high level of disinfection can be easily maintained.\u003c\/p\u003e\n\u003cp\u003eCan also be used to determine chlorine levels in fish tanks for optimum fish and plant health. Use alongside recommended dechlorinators.\u003c\/p\u003e\n\u003ch3\u003eIdeal for\u003c\/h3\u003e\n\u003cul\u003e\n\u003cul\u003e\n\u003cul\u003e\n\u003cli\u003eSwimming pools and spas\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/ul\u003e\n\u003c\/ul\u003e\n\u003cul\u003e\n\u003cul\u003e\n\u003cul\u003e\n\u003cli\u003eWater and quality control checks\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/ul\u003e\n\u003c\/ul\u003e\n\u003cul\u003e\n\u003cul\u003e\n\u003cul\u003e\n\u003cli\u003eDisinfection\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/ul\u003e\n\u003c\/ul\u003e\n\u003cul\u003e\n\u003cul\u003e\n\u003cul\u003e\n\u003cli\u003eWaste water treatment\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/ul\u003e\n\u003c\/ul\u003e\n\u003cul\u003e\n\u003cul\u003e\n\u003cul\u003e\n\u003cli\u003eAquaculture\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/ul\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"row\"\u003e\n\u003cdiv class=\"section-row section four\"\u003e\n\u003cdiv class=\"section-text col-xs-12 col-sm-7 add-p-r rem-p-l\"\u003e\n\u003ch3\u003eMain Benefits\u003c\/h3\u003e\n\u003cul\u003e\n\u003cul\u003e\n\u003cli\u003eTesting is quick and easy\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/ul\u003e\n\u003cul\u003e\n\u003cul\u003e\n\u003cli\u003eHigh precision results - more accurate than chemical test kits\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/ul\u003e\n\u003cul\u003e\n\u003cul\u003e\n\u003cli\u003eAuto shut-off feature means the Checker cannot be left on by mistake\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/ul\u003e\n\u003cul\u003e\n\u003cul\u003e\n\u003cli\u003eFully portable, fitting easily into both palm and pocket\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eSupplied with\u003c\/h3\u003e\n\u003cul\u003e\n\u003cul\u003e\n\u003cli\u003e2 sample cuvettes\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/ul\u003e\n\u003cul\u003e\n\u003cul\u003e\n\u003cli\u003eCuvette cap\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/ul\u003e\n\u003cul\u003e\n\u003cul\u003e\n\u003cli\u003eStarter pack of reagents x 6 (re-ordering information: Hanna Instruments-711-25 x 25 tests)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/ul\u003e\n\u003cul\u003e\n\u003cul\u003e\n\u003cli\u003e1 x 1.5 AAA battery\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/ul\u003e\n\u003cul\u003e\n\u003cul\u003e\n\u003cli\u003eInstructions\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/ul\u003e\n\u003cp\u003eAlso available: Calibration set Hanna Instruments-711-11\u003cbr\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cbr\u003e\n\u003c\/div\u003e","brand":"Hanna Instruments","offers":[{"title":"HI-711","offer_id":56408857051509,"sku":"HI-711","price":71.35,"currency_code":"GBP","in_stock":true},{"title":"HI-711-EXPIRED 09\/25","offer_id":56408857084277,"sku":"HI-712-EXPIRED","price":30.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0574\/5511\/6439\/files\/1_87a1c325-1af2-45ad-9481-2cb1b4a23bbe.jpg?v=1730902827"},{"product_id":"hanna-instruments-hi-707-nitrite-low-range-handheld-colorimeter-checker-hc","title":"Hanna Instruments HI-707 Nitrite Low Range Handheld Colorimeter - CheckerHC","description":"\u003cp\u003eMeasuring 0 to 600 ppb NO2-N. Suitable for use in all types of aquaculture (marine, salt and fresh water), nitrite can lead to tissue damage, illness and death in aquatic life, so regular checks can help aquarists to identify rising nitrite levels before fish begin to suffer. Uses an adaptation of the EPA Diazotization method 354.1.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eKey features\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eSmall palm-sized design\u003c\/p\u003e\n\u003cp\u003eAccurate from ±20 ppb ± 5% of reading\u003c\/p\u003e\n\u003cp\u003eDedicated to a single parameter\u003c\/p\u003e\n\u003cp\u003eUses a single AAA battery\u003c\/p\u003e\n\u003cp\u003eAuto Power Off after 10 minutes inactivity\u003c\/p\u003e\n\u003cp\u003eBuilt-in timer for timed reaction readings\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eSupplied with\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e2 cuvettes and caps\u003c\/p\u003e\n\u003cp\u003eReagent starter kit (6 packets of nitrite LR reagent) - re-ordering information: HI-707-25\u003c\/p\u003e\n\u003cp\u003e1 x 1.5V AAA battery\u003c\/p\u003e\n\u003cp\u003eInstruction manual\u003c\/p\u003e\n\u003cp\u003eSku:HI-707\u003c\/p\u003e","brand":"Hanna Instruments","offers":[{"title":"Default Title","offer_id":41124123672727,"sku":"HI-707","price":71.35,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0574\/5511\/6439\/products\/hanna_instruments_hi_707_nitrite_low_range_handheld_colorimeter_checker_hc.jpg?v=1634130970"},{"product_id":"hanna-instruments-hi-708-nitrite-high-range-handheld-colorimeter-checker-hc","title":"Hanna Instruments HI-708 Nitrite High Range Handheld Colorimeter - Checker HC","description":"\u003cp\u003eMeasuring 0 to 150 ppm NO2-N using an adaptation of the ferrous sulphate method. This checker is useful for initial measurements of nitrite when trying to establish good ammonia\/nitrite\/nitrate control. Suitable for all types of aquaculture (marine, salt and fresh water), the ultimate aim is to decrease nitrite levels so the low range or ultra-low nitrite Checker can be used for optimum tank health.\u003c\/p\u003e\n\u003cp\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFeatures:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eSmall palm-sized design\u003c\/p\u003e\n\u003cp\u003eAccurate from ±3 ppm ±5% of reading\u003c\/p\u003e\n\u003cp\u003eDedicated to a single parameter\u003c\/p\u003e\n\u003cp\u003eUses a single AAA battery\u003c\/p\u003e\n\u003cp\u003eAuto Power Off after 10 minutes in inactivity\u003c\/p\u003e\n\u003cp\u003eBuilt-in timer for timed reaction readings\u003c\/p\u003e\n\u003cp\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eThe HI-708 Checker is supplied with:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e2 cuvettes and caps\u003c\/p\u003e\n\u003cp\u003ereagent starter kit (6 packets of reagent) - re-ordering information HI-708-25\u003c\/p\u003e\n\u003cp\u003e1 X 1.5X AAA battery\u003c\/p\u003e\n\u003cp\u003eInstruction manual\u003c\/p\u003e","brand":"Hanna Instruments","offers":[{"title":"Default Title","offer_id":41124170268823,"sku":"HI-708","price":71.35,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0574\/5511\/6439\/products\/hanna_instruments_hi_708_nitrite_high_range_handheld_colorimeter_checker_hc.jpg?v=1634131838"},{"product_id":"hanna-instruments-hi-713-phosphate-low-range-handheld-colorimeter-checker-hc","title":"Hanna Instruments HI-713 Phosphate Low Range Handheld Colorimeter - Checker HC","description":"\u003cp\u003eThe Hanna Instruments Phosphate Low Rnage Handheld Colorimeter Checker, is a compact and reliable tool designed for accurate measurement of phosphate levels in water. Ideal for water systems uch as aquaculture, wastewater treatment and freshwater systems, this colorimeter ensures precise testing to help maintain water quality. \u003c\/p\u003e\n\u003cp\u003eIts user friendly design allows you to easily analyse samples with just a few simple steps. \u003c\/p\u003e\n\u003cp\u003eLightweight and portable, this handheld colorimeter is perfect for fieldwork and laboratory use, making it an essential tool for professionals and enhusiasts alike. \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eChecker range: 0.00 to 2.50 ppm.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eIdeal for coral reef tanks and fresh and salt water aquariums\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003ePhosphate directly inhibits calcification by corals and coralline algae - even at low levels. The health of plants in freshwater aquaria will also be impaired by raised levels of phosphate in the water. Phosphate naturally occurs as waste decomposes in coral reef, salt and fresh water aquariums. While it does not directly harm fish when levels are high, resulting green algae growth can deplete the oxygen levels in water. Corals can lose their colour due to the effects of brown algae.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eThe optimum phosphate level - particularly for reef tanks - is often quoted as zero or 0.05 mg\/L (ppm).\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eWith its ability to register the presence of phosphate in salt and fresh water at extremely low levels, the new Hanna Phosphate Checker offers a real 'must-have' addition to the fish lover's equipment chest.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eMain Benefits\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eTesting is quick and easy\u003c\/p\u003e\n\u003cp\u003eHigh precision results - more accurate than chemical test kits\u003c\/p\u003e\n\u003cp\u003eAuto shut-off feature means the Checker cannot be left on by mistake\u003c\/p\u003e\n\u003cp\u003eFully portable, fitting easily into both palm and pocket\u003c\/p\u003e\n\u003cp\u003eFits nicely into your palm or pocket\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eSupplied with\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e2 sample cuvettes\u003c\/p\u003e\n\u003cp\u003eCuvette cap\u003c\/p\u003e\n\u003cp\u003eStarter pack of reagents x 6 (re-ordering information HI-713-25 x 25 tests)\u003c\/p\u003e\n\u003cp\u003e1 x 1.5 AAA battery\u003c\/p\u003e\n\u003cp\u003eInstructions\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/testallwater.co.uk\/collections\/hanna-reagents\/products\/hanna-instruments-713-25-reagents-for-hanna-instruments-713-phosphate-pocket-checker-x-25-tests\" target=\"_blank\"\u003eReplacement Reagents For HI-713\u003c\/a\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eSku: HI-713\u003c\/p\u003e","brand":"Hanna Instruments","offers":[{"title":"Default Title","offer_id":41124241014935,"sku":"HI-713","price":71.35,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0574\/5511\/6439\/files\/3_2c87e937-ccf3-4e8b-b95d-f49d513e0c74.jpg?v=1733304963"},{"product_id":"hanna-instruments-hi-736-phosphorus-marine-ultra-low-range-colorimeter-checker-hc","title":"Hanna Instruments HI-736 Phosphorus Marine Ultra-Low Range Colorimeter - Checker HC","description":"\u003cp\u003eIdeal for use with coral reef tanks and salt water aquariums. While tiny amounts of phosphorus are needed to sustain life in the tank, more phosphorus (as\u003c\/p\u003e\n\u003cp\u003ephosphate) is introduced through feed, decaying plants, animal waste, and even tap water. Too much can deplete oxygen levels, encourage growth of unwanted algae types and inhibit\u003c\/p\u003e\n\u003cp\u003ethe calcification by corals and coralline algaes.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eChecker range:\u003c\/strong\u003e 0 to 200 ppb.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eMain Benefits\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eTesting is quick and easy\u003c\/p\u003e\n\u003cp\u003eHigh precision results - more accurate than chemical test kits\u003c\/p\u003e\n\u003cp\u003eAuto shut-off feature means the Checker cannot be left on by mistake\u003c\/p\u003e\n\u003cp\u003eFully portable, fitting easily into both palm and pocket\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eSupplied with\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e2 sample cuvettes\u003c\/p\u003e\n\u003cp\u003eCuvette cap\u003c\/p\u003e\n\u003cp\u003eStarter pack of reagents x 6 tests (re-ordering information: HI-736-25 x 25 tests)\u003c\/p\u003e\n\u003cp\u003e1 x 1.5 AAA battery\u003c\/p\u003e\n\u003cp\u003eInstructions\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/testallwater.co.uk\/collections\/hanna-reagents\/products\/hanna-instruments-hi-736-25-reagents-for-hi-736-ulr-marine-phosphorus-checker-hc\" target=\"_blank\" rel=\"noopener noreferrer\"\u003eReplacement Reagents For HI-736\u003c\/a\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eSku:HI-736\u003c\/p\u003e","brand":"Hanna Instruments","offers":[{"title":"Default Title","offer_id":41124296130711,"sku":"HI-736","price":71.35,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0574\/5511\/6439\/files\/3_e7c65e32-0890-4680-81b6-2d1acf1ce4a2.jpg?v=1733409007"},{"product_id":"hanna-instruments-hi-7754-alkalinity-checker","title":"Hanna Instruments HI-7754 Alkalinity Checker","description":"\u003cp\u003eAlkalinity is the buffering capacity of water to ensure stability of the pH value. If the alkalinity is too High, then adding acid or base has little to no elect on the pH value. If the alkalinity is too low, the smallest of acid or base will cause extreme pH changes. \u003c\/p\u003e\n\u003cp\u003eThe recommend value is 80 to 120mg\/l CaCO3, the HI-7754 offers a simple, accurate and economical way to measure this. \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eSupplied with \u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eX 2 Cuvettes with Cap\u003c\/p\u003e\n\u003cp\u003eReagents\u003c\/p\u003e\n\u003cp\u003eBattery in hard case\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eSpecifications\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eRange: 10 to 300 mg\/l\u003c\/p\u003e\n\u003cp\u003eResolution: 1mg\/l\u003c\/p\u003e\n\u003cp\u003eAccuracy: ±5mg\/l, ±5% value\u003c\/p\u003e\n\u003cp\u003eMethod: Colorimetric\u003c\/p\u003e\n\u003cp\u003eBattery: 1.5 v AAA\u003c\/p\u003e\n\u003cp\u003eDimensions: 81.5 x 61 x 37.5 mm\u003c\/p\u003e\n\u003cp\u003eSku:HI-7754\u003c\/p\u003e","brand":"Hanna Instruments","offers":[{"title":"HI-7754","offer_id":55156126810485,"sku":"HI-7754","price":71.35,"currency_code":"GBP","in_stock":true},{"title":"HI-7754-reagents expire 03\/25","offer_id":55156126843253,"sku":"HI-7754-reagents expire 03\/25","price":49.99,"currency_code":"GBP","in_stock":true},{"title":"HI-7754 EXPIRED 12\/2025","offer_id":56565118173557,"sku":"HI-7754-EXP\/12\/2025","price":49.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0574\/5511\/6439\/products\/117907_4f486b8e-83ae-4b60-a79d-3a4ae540fee80.jpg?v=1660217842"},{"product_id":"hanna-instruments-hi-7024-copper-checker","title":"Hanna Instruments HI-7024 Copper Checker","description":"\u003cp\u003eIf the concentration of free copper is too high in bathing, blond hair can turn green. The maximum concentration of free copper in a bath is 0.8 mg\/l. The HI-7024 is a simple, accurate and affordable way to measure copper values. This checker uses an adaption of the EPA method. \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eSupplied with \u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eX 2 Cuvettes with Cap\u003c\/p\u003e\n\u003cp\u003eReagents\u003c\/p\u003e\n\u003cp\u003eBattery in hard case\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eSpecifications\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eRange: 0.06 to 5.00 mg\/l \u003c\/p\u003e\n\u003cp\u003eResolution: 0.01 mg\/l \u003c\/p\u003e\n\u003cp\u003eAccuracy: ± 0.05 mg\/l, ±5 % value \u003c\/p\u003e\n\u003cp\u003eMethod: Colorimetric \u003c\/p\u003e\n\u003cp\u003eBattery: 1.5 V AAA\u003c\/p\u003e\n\u003cp\u003eDimensions: 81.5 x 61 x 37.5 mm\u003c\/p\u003e\n\u003cp\u003eSku:HI-7024\u003c\/p\u003e","brand":"Hanna Instruments","offers":[{"title":"Default Title","offer_id":42419283362050,"sku":"HI-7024","price":71.35,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0574\/5511\/6439\/products\/hanna_instruments_hi_7024_copper_checker.jpg?v=1655889482"},{"product_id":"hanna-instruments-hi-7214-iron-checker","title":"Hanna Instruments HI-7214 Iron Checker","description":"\u003cp\u003eToo much iron in swimming water causes brown spots, cloudiness, or brown water. The maximum concentration of iron in a bath is 0.2 mg\/l. The Hi-7214 provides a fast and accurate way to determine iron values in four easy steps. \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eSupplied with \u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eX 2 Cuvettes with Cap\u003c\/p\u003e\n\u003cp\u003eReagents\u003c\/p\u003e\n\u003cp\u003eBattery in hard case\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eSpecifications\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eRange: 0.08 – 5.00 mg\/l \u003c\/p\u003e\n\u003cp\u003eResolution: 0.01 mg\/l\u003c\/p\u003e\n\u003cp\u003eAccuracy: ±0.04 mg\/l, ±2% value\u003c\/p\u003e\n\u003cp\u003eMethod: Phenanthroline\u003c\/p\u003e\n\u003cp\u003eBattery: 1.5 V AAA\u003c\/p\u003e\n\u003cp\u003eDimensions: 81.5 x 61 x 37.5 mm\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eSku: HI-7214\u003c\/p\u003e","brand":"Hanna Instruments","offers":[{"title":"HI-7214","offer_id":56565032845685,"sku":"HI-7214","price":71.35,"currency_code":"GBP","in_stock":true},{"title":"HI-7214-EXP-11\/2025","offer_id":56565032878453,"sku":"HI-7214-11\/2025","price":49.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0574\/5511\/6439\/products\/117910_a05b4b3c-8074-45c7-bad8-b51fe1971b930.jpg?v=1660218135"},{"product_id":"hanna-instruments-hi-7134-phosphate-checker","title":"Hanna Instruments HI-7134 Phosphate Checker","description":"\u003cp\u003ePhosphates are ideal nutrients for this alga that provides green water. These substances often come from fertilizers that end up in a bath. With the HI7134 allows you to measure phosphate in a sample and affordable way. Developed as a more accurate alternative to chemical test kits, this checker provides fast results. \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eSupplied with \u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eX 2 Cuvettes with Cap\u003c\/p\u003e\n\u003cp\u003eReagents\u003c\/p\u003e\n\u003cp\u003eBattery in hard case\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/testallwater.co.uk\/collections\/hanna-reagents\/products\/hanna-instruments-hi-7134-25-phosphate-reagents-for-hi-7134\"\u003eReplacement Reagents for HI-7134\u003c\/a\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eSpecifications\u003c\/strong\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003eRange: 0.00-2.50 mg\/l\u003c\/p\u003e\n\u003cp\u003eResolution:0.01 mg\u003c\/p\u003e\n\u003cp\u003eAccuracy: ±0.04 mg\/l, 4% value\u003c\/p\u003e\n\u003cp\u003eMethod: Ascorbic Acid\u003c\/p\u003e\n\u003cp\u003eBattery: 1.5 V AAA \u003c\/p\u003e\n\u003cp\u003eDimensions: 81.5 x 61 x 37.5 mm\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eSku: HI-7134\u003c\/p\u003e","brand":"Hanna Instruments","offers":[{"title":"Default Title","offer_id":42419307118850,"sku":"HI-7134","price":71.35,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0574\/5511\/6439\/files\/3_f5aeb226-44aa-48d4-90ab-4300e9e07d4b.jpg?v=1735815721"},{"product_id":"hanna-instruments-hi-779-ph-checker","title":"Hanna Instruments HI-779 pH Checker","description":"\u003cp\u003eIntroducing a new way of measuring pH. The HI-779 is a checker photometer with which you can quickly, easily, and moreover accurately measure pH in swimming water, according to the recognized phenol red method. The checker does not have to be calibrated with buffers, as with a tester, and there is also no electrode to be stored in storage solution. \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eSupplied with \u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eX 2 Cuvettes with Cap\u003c\/p\u003e\n\u003cp\u003eReagents\u003c\/p\u003e\n\u003cp\u003eBattery in hard case\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003ca rel=\"noopener noreferrer\" href=\"https:\/\/testallwater.co.uk\/collections\/hanna-reagents\/products\/hanna-instruments-hi-779-25-ph-reagents-for-hi-779\" target=\"_blank\"\u003eReplacement Reagents for HI-779\u003c\/a\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eSpecifications \u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eRange: 6.3 to 8.6 pH\u003c\/p\u003e\n\u003cp\u003eResolution: 0.1 pH\u003c\/p\u003e\n\u003cp\u003eAccuracy: ±0.2 pH @ 25®C\u003c\/p\u003e\n\u003cp\u003eMethod: Phenol Red\u003c\/p\u003e\n\u003cp\u003eBattery: 1.5 V AAA\u003c\/p\u003e\n\u003cp\u003eDimensions: 81.5 x 61 x 37.5 mm\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eSku:HI-779\u003c\/p\u003e","brand":"Hanna Instruments","offers":[{"title":"Default Title","offer_id":42419314360578,"sku":"HI-779","price":73.82,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0574\/5511\/6439\/files\/1_5e91bc8d-a75f-4d81-a6cd-39957ebc5449.jpg?v=1749111758"},{"product_id":"hanna-instruments-772-marine-alkalinity-dkh-checker-hc","title":"Hanna Instruments-772 Marine Alkalinity (dKH) Checker HC","description":"\u003cp\u003eIdeal for salt water aquariums and coral reef tanks.\u003c\/p\u003e\n\u003cp\u003eDesigned exclusively for saltwater aquariums, the HI-772 checker offers a quick, easy and highly accurate method of measuring alkalinity in degrees of calcium hardness, commonly abbreviated as dKH.\u003c\/p\u003e\n\u003cp\u003eAlkalinity helps to maintain a stable pH, a vital factor for most aquatic life. Corals also need an adequate level of alkalinity in order to support healthy growth: if levels are too low, corals cannot precipitate and form their skeletons; if levels fluctuate too much or too quickly, growth can become impaired.\u003c\/p\u003e\n\u003cp\u003eThe more precise and stable the levels, the better the results. With regular, precise monitoring, fluctuations in levels can be quickly corrected, giving your corals the best chance of success.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eSpecifications\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eRange: 0.0 to 20.0 dKH\u003c\/p\u003e\n\u003cp\u003eResolution: 0.1 dKH\u003c\/p\u003e\n\u003cp\u003eAccuracy: ±0.3 dKH ±5% of reading\u003c\/p\u003e\n\u003cp\u003eLight Source: LED @ 610 nm\u003c\/p\u003e\n\u003cp\u003eMethod: colorimetric method\u003c\/p\u003e\n\u003cp\u003eEnvironment: 0 to 50°C; RH max 95% non-condensing\u003c\/p\u003e\n\u003cp\u003eBattery Type: (1) 1.5V AAA\u003c\/p\u003e\n\u003cp\u003eAuto-off: after ten minutes of non-use\u003c\/p\u003e\n\u003cp\u003eDimensions: 86 x 61 x 37.5 mm\u003c\/p\u003e\n\u003cp\u003eWeight: 64g\u003c\/p\u003e\n\u003cp\u003eMethod: Colorimetric method. 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The 0.00 to 5.00 range is ideal for reef aquarium maintenance\u003c\/p\u003e\n\u003cp\u003eNitrate is a by-product of the Nitrogen cycle. 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Acidification is a consequence of carbon dioxide (CO) absorption in seawaters and oceans. Carbon dioxide reacts with seawater to produce carbonic acid (HCO).pH modifications affect marine life growth, reproduction, and communication. Hydrogen ions have a tendency to bond with carbonate to form bicarbonate. 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The HI-717-11 includes one sealed cuvette for zero ppm phosphate and one cuvette that is tinted to an equivalent 15.0 +\/- 1.5 ppm phosphate sample @ 25°C.\u003c\/p\u003e\n\u003cp\u003eThe calibration check set is produced using reagent grade chemicals in a temperature controlled environment. \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eContent\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e1 PC x 10ml HI717-11A\u003c\/p\u003e\n\u003cp\u003e1 PC x 10ml HI717-11B\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eSku: HI-717-11\u003c\/p\u003e","brand":"Hanna Instruments","offers":[{"title":"Default Title","offer_id":43336992489730,"sku":"HI-717-11","price":21.76,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0574\/5511\/6439\/products\/118409_2f705d6c-5870-46b8-a3cb-966f7ebcb2b50.jpg?v=1666268162"},{"product_id":"hanna-instruments-hi-718-iodine-handheld-colorimeter-checker","title":"Hanna Instruments HI-718 Iodine Handheld Colorimeter Checker","description":"\u003cp\u003eQuicker and easier to use than chemical test kits, the new HI-718 Iodine Checker from Hanna will give you accurate results in an instant.\u003c\/p\u003e\n\u003cp\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eIdeal for\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eFreshwater Aquaculture\u003c\/p\u003e\n\u003cp\u003eFruit and vegetable sanitation\u003c\/p\u003e\n\u003cp\u003eIndustrial processes and disinfection\u003c\/p\u003e\n\u003cp\u003eDrinking water and quality control checks\u003c\/p\u003e\n\u003cp\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003ePlease note: the HI-718 Iodine Checker cannot be used for swimming pool or spa water testing due to chlorine interference.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eKey features\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eAccurate and easy to use\u003c\/p\u003e\n\u003cp\u003eAccuracy ±0.1 mg\/L (ppm)\u003c\/p\u003e\n\u003cp\u003e0.01 mg\/L (ppm) resolution\u003c\/p\u003e\n\u003cp\u003eDesigned to work with Hanna reagents\u003c\/p\u003e\n\u003cp\u003eLarge easy to read digits\u003c\/p\u003e\n\u003cp\u003eAuto shut-off\u003c\/p\u003e\n\u003cp\u003eFits into the palm of your hand and pocket\u003c\/p\u003e\n\u003cp\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eSupplied with:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e2 sample cuvettes\u003c\/p\u003e\n\u003cp\u003e1 black cuvette cap\u003c\/p\u003e\n\u003cp\u003eStarter pack of 6 reagents for Iodine (re-ordering information HI-718-25 x 25 tests\u003c\/p\u003e\n\u003cp\u003e1 x 1.5V AAA battery\u003c\/p\u003e\n\u003cp\u003eInstructions\u003c\/p\u003e\n\u003cp\u003e\u003c\/p\u003e\n\u003cp\u003eAlso available: HI-718-11 Calibration Set.\u003c\/p\u003e\n\u003cp\u003e\u003c\/p\u003e\n\u003cp\u003eSku:HI-718\u003c\/p\u003e","brand":"Hanna Instruments","offers":[{"title":"HI-718","offer_id":56418715697525,"sku":"HI-718","price":71.35,"currency_code":"GBP","in_stock":true},{"title":"HI-718-NO REAGENTS","offer_id":56418715730293,"sku":"HI-718-NO REAGENTS","price":39.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0574\/5511\/6439\/products\/118681_2b83c95b-9b0f-4673-a54f-004a2e528f6d0.jpg?v=1693392117"},{"product_id":"hanna-instruments-hi-747-copper-low-range-colorimeter-checker","title":"Hanna Instruments HI-747 Copper Low Range Colorimeter Checker","description":"\u003cp\u003eThe HI-747 Copper low range Checker is a simple, accurate and cost effective way to measure low ranges of copper in water.\u003c\/p\u003e\n\u003cp\u003e\u003c\/p\u003e\n\u003cp\u003eDesigned as a more accurate alternative to chemical test kits, the HI-747 provides quick, accurate results in four easy steps.\u003c\/p\u003e\n\u003cp\u003e\u003c\/p\u003e\n\u003cp\u003eHI-747 uses an adaptation of the EPA method. The reaction between copper and the bicinchoninate reagent causes a purple tint in the sample.\u003c\/p\u003e\n\u003cp\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eIdeal for\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eWater quality\u003c\/p\u003e\n\u003cp\u003eEducation\u003c\/p\u003e\n\u003cp\u003ePlating\u003c\/p\u003e\n\u003cp\u003eWastewater\u003c\/p\u003e\n\u003cp\u003eEnvironmental\u003c\/p\u003e\n\u003cp\u003eFreshwater Aquariums\u003c\/p\u003e\n\u003cp\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eKey features\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eSmall palm-sized design\u003c\/p\u003e\n\u003cp\u003eAccurate from ±10 ppb ±5% of reading\u003c\/p\u003e\n\u003cp\u003eDedicated to a single parameter\u003c\/p\u003e\n\u003cp\u003eAuto power off after 10 minutes of inactivity\u003c\/p\u003e\n\u003cp\u003eBuilt-in timer for timed reaction readings\u003c\/p\u003e\n\u003cp\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eSupplied With\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003esample cuvettes and caps (2),\u003c\/p\u003e\n\u003cp\u003eCopper LR reagent starter kit for 6 tests (re-ordering information HI-747-25 x 25 tests),\u003c\/p\u003e\n\u003cp\u003ebattery,\u003c\/p\u003e\n\u003cp\u003einstructions\u003c\/p\u003e\n\u003cp\u003equick start guide.\u003c\/p\u003e\n\u003cp\u003e\u003c\/p\u003e\n\u003cp\u003eSku: HI-747\u003c\/p\u003e","brand":"Hanna Instruments","offers":[{"title":"Default Title","offer_id":43701948547330,"sku":"HI-747","price":80.28,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0574\/5511\/6439\/files\/hanna_instruments_hi_747_copper_low_range_colorimeter_checker.jpg?v=1684745154"},{"product_id":"hanna-instruments-copper-high-range-colorimeter-checker-hc","title":"Hanna Instruments Copper High Range Colorimeter Checker HC","description":"\u003cp\u003eIdeal for freshwater \u0026amp; saltwater aquariums. The HI-702 Copper high range Checker is a simple, accurate and cost effective way to measure high ranges of copper in water.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eIdeal for\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eWater quality\u003c\/p\u003e\n\u003cp\u003eEducation\u003c\/p\u003e\n\u003cp\u003ePlating\u003c\/p\u003e\n\u003cp\u003eWastewater\u003c\/p\u003e\n\u003cp\u003eEnvironmental\u003c\/p\u003e\n\u003cp\u003eFreshwater Aquariums\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eKey features\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eSmall palm-sized design\u003c\/p\u003e\n\u003cp\u003eAccurate from ±0.05ppm ±5% of reading\u003c\/p\u003e\n\u003cp\u003eDedicated to a single parameter\u003c\/p\u003e\n\u003cp\u003eAuto power off after 10 minutes of inactivity\u003c\/p\u003e\n\u003cp\u003eBuilt-in timer for timed reaction readings\u003c\/p\u003e\n\u003cp\u003e \u003cstrong\u003eSupplied With \u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003esample cuvettes and caps (2),\u003c\/p\u003e\n\u003cp\u003eCopper HR reagent starter kit x 6 tests (re-ordering information: Hi-702-25 x 25 tests),\u003c\/p\u003e\n\u003cp\u003ebattery,\u003c\/p\u003e\n\u003cp\u003einstructions\u003c\/p\u003e\n\u003cp\u003equick start guide.\u003c\/p\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eRange\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003ctd\u003e0.00 to 5.00 ppm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eResolution\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003ctd\u003e0.01 ppm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAccuracy @ 25°C\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003ctd\u003e± 0.05 ppm ± 5% of reading\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLight Source\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003ctd\u003eLED @ 575 nm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLight Detector\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003ctd\u003eSilicon photocell\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eEnvironment\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003ctd\u003e0 to 50°C (32 to 122°F); RH max 95% non-condensing\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBattery Type\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003ctd\u003e(1) 1.5V AAA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAuto-off\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003ctd\u003eAfter 10 minutes of non-use\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003ctd\u003e86 x 61 x 37.5 mm (3.2 x 2.4 x 1.5\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003ctd\u003e64 g\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMethod\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003ctd\u003eadaptation of the EPA method. 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caps,\u003c\/p\u003e\n\u003cp\u003ereagent starter kit x 12 tests (re-ordering information: HI-705-25 x 25 tests),\u003c\/p\u003e\n\u003cp\u003e1 x 1.5V AAA battery,\u003c\/p\u003e\n\u003cp\u003einstruction manual.\u003c\/p\u003e\n\u003cp\u003eSku:HI-705\u003c\/p\u003e","brand":"Hanna Instruments","offers":[{"title":"Default Title","offer_id":43702847537410,"sku":"HI-705","price":85.69,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0574\/5511\/6439\/files\/7_ff497677-d7a5-470e-afec-e815bb977389.jpg?v=1726130269"},{"product_id":"hanna-instruments-hi-739-fluoride-high-range-colorimeter-checker","title":"Hanna Instruments HI-739 Fluoride High Range Colorimeter Checker","description":"\u003cp\u003eThe HI-739 pocket checker is a simple and accurate way to measure high ranges of fluoride in fresh water.\u003c\/p\u003e\n\u003cdiv class=\"feature\"\u003e\n\u003cspan\u003e \u003c\/span\u003e\u003cspan\u003e0.0 to 20.0 ppm\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eKey features:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eAccurate and easy to use\u003c\/p\u003e\n\u003cp\u003eAdaptation of SPADNS method\u003c\/p\u003e\n\u003cp\u003e±0.5 ppm ±5% of reading\u003c\/p\u003e\n\u003cp\u003e0.1 ppm resolution\u003c\/p\u003e\n\u003cp\u003eDesigned to work with Hanna reagents\u003c\/p\u003e\n\u003cp\u003eLarge easy to read digits\u003c\/p\u003e\n\u003cp\u003eAuto shut-off \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eIdeal for:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eWater testing\u003c\/p\u003e\n\u003cp\u003eQuick on the spot analysis\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eNot suitable for aquariums of any kind\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eSupplied with:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e2 sample cuvettes with caps\u003c\/p\u003e\n\u003cp\u003eReagents for 15 tests (re-ordering information HI-739-26 x 30 tests)\u003c\/p\u003e\n\u003cp\u003eSyringe with tip\u003c\/p\u003e\n\u003cp\u003ePipette\u003c\/p\u003e\n\u003cp\u003e1 x 1.5V AAA battery\u003c\/p\u003e\n\u003cp\u003eInstructions\u003c\/p\u003e\n\u003cp\u003e \u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003eSku: HI-739\u003c\/p\u003e","brand":"Hanna Instruments","offers":[{"title":"Default Title","offer_id":43702862053634,"sku":"HI-739","price":85.69,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0574\/5511\/6439\/files\/hanna_instruments_hi_739_fluoride_high_range_colorimeter_checker.jpg?v=1693392643"},{"product_id":"hanna-instruments-hi-746-iron-low-range-colorimeter-checker","title":"Hanna Instruments HI-746 Iron Low Range Colorimeter Checker","description":"\u003cp\u003eThe HI-746 Iron low range Checker is a simple, accurate and cost effective way to measure low ranges of iron in water.\u003c\/p\u003e\n\u003cp\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eRange:\u003c\/strong\u003e0 to 999 ppb\u003c\/p\u003e\n\u003cp\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eIdeal for:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eFresh water aquariums only\u003c\/p\u003e\n\u003cp\u003eWater quality\u003c\/p\u003e\n\u003cp\u003eEducation\u003c\/p\u003e\n\u003cp\u003eIndustrial\u003c\/p\u003e\n\u003cp\u003eMunicipal water\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eKey features:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eSmall palm-sized design\u003c\/p\u003e\n\u003cp\u003eAccurate from ± 20 ppb ±5% of reading\u003c\/p\u003e\n\u003cp\u003eDedicated to a single parameter\u003c\/p\u003e\n\u003cp\u003eAuto power off after 10 minutes of inactivity\u003c\/p\u003e\n\u003cp\u003eBuilt-in timer for timed reaction 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shut-off\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eIdeal for\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eFruit and vegetable sanitation\u003c\/p\u003e\n\u003cp\u003eDrinking water and quality control checks\u003c\/p\u003e\n\u003cp\u003eElectroplating industries\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eSupplied with\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e2 sample cuvettes\u003c\/p\u003e\n\u003cp\u003e1 black cuvette cap\u003c\/p\u003e\n\u003cp\u003eStarter pack of 6 reagents for Iodine (re-ordering information HI-723-25 x 25 tests)\u003c\/p\u003e\n\u003cp\u003ePowder reagents for chromium VI HR (6)\u003c\/p\u003e\n\u003cp\u003e1 x 1.5V AAA battery\u003c\/p\u003e\n\u003cp\u003eInstructions\u003c\/p\u003e\n\u003cp\u003eSku: HI-723\u003c\/p\u003e","brand":"Hanna Instruments","offers":[{"title":"Default Title","offer_id":43706500907266,"sku":"HI-723","price":82.18,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0574\/5511\/6439\/files\/1_45ce9a92-5d1b-4a5a-b3dc-6962eaddffb7.jpg?v=1728984740"},{"product_id":"hanna-instruments-hi-726-nickel-high-range-checker","title":"Hanna Instruments HI-726 Nickel High Range Checker","description":"\u003cp\u003eNickel is extensively used in electroplating, the manufacturing of steel, electronic devices, ceramics and coloured glasses. 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It can be natural or artificial. Dissolved and suspended solids (together) cause apparent colour.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eOther harmless constituents of water such as tannins, iron and manganese, may also be present and impart colour. The HI-727 reports the colour of water from 0-500 PCU (Platinum Cobalt Units).\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eKey features\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eAccurate and easy to use\u003c\/p\u003e\n\u003cp\u003eDiphenylcarbohydrazide method\u003c\/p\u003e\n\u003cp\u003eAccuracy ±10 PCU ±5% of reading\u003c\/p\u003e\n\u003cp\u003e5 PCU resolution\u003c\/p\u003e\n\u003cp\u003eDesigned to work with Hanna reagents\u003c\/p\u003e\n\u003cp\u003eLarge easy to read digits\u003c\/p\u003e\n\u003cp\u003eAuto shut-off\u003c\/p\u003e\n\u003cp\u003eFits into palm and pocket\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eSupplied with\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e2 sample cuvettes with caps\u003c\/p\u003e\n\u003cp\u003e1 x 1.5V AAA battery\u003c\/p\u003e\n\u003cp\u003eInstructions\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eSku: HI-727\u003c\/p\u003e","brand":"Hanna Instruments","offers":[{"title":"Default Title","offer_id":43713478328578,"sku":"HI-727","price":85.69,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0574\/5511\/6439\/files\/1_ea5fe473-7cda-4fcc-adbf-c64623231420.jpg?v=1730974146"},{"product_id":"hanna-instruments-hi-716-bromine-checker","title":"Hanna Instruments HI-716 Bromine Checker","description":"\u003cp\u003eThe HI-716 Checker is a simple, accurate, and cost effective way to measure Bromine.\u003c\/p\u003e\n\u003cp\u003e \u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003eThe HI-716 uses an adaptation of the Standard Methods for the Examination of Water and Wastewater, 18th edition, DPD method. The reaction between bromine and the reagent causes a pink tint in the sample\u003c\/p\u003e\n\u003cp\u003e \u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFeatures:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eSmall palm-sized design\u003c\/p\u003e\n\u003cp\u003eAccurate from ±0.1 ppm ±5% of reading\u003c\/p\u003e\n\u003cp\u003eDedicated to a single parameter\u003c\/p\u003e\n\u003cp\u003eUses a single AAA battery\u003c\/p\u003e\n\u003cp\u003eAuto Power Off after 10 minutes in inactivity\u003c\/p\u003e\n\u003cp\u003eBuilt-in timer for timed reaction readings\u003c\/p\u003e\n\u003cp\u003e \u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eIdeal for:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eWater Quality\u003c\/p\u003e\n\u003cp\u003eEducation\u003c\/p\u003e\n\u003cp\u003eSwimming Pools\/Hot Tubs Sanitisation\u003c\/p\u003e\n\u003cp\u003eEnvironmental\u003c\/p\u003e\n\u003cp\u003e \u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eSupplied With:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eSample cuvettes with caps (2),\u003c\/p\u003e\n\u003cp\u003eBromine reagent starter kit (6 tests) - re-ordering number: HI-716-25 x 25 tests,\u003c\/p\u003e\n\u003cp\u003eBattery,\u003c\/p\u003e\n\u003cp\u003eInstructions and quick start guide.\u003c\/p\u003e\n\u003cp\u003e \u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003eSku:HI-716\u003c\/p\u003e","brand":"Hanna Instruments","offers":[{"title":"Default Title","offer_id":43713494221058,"sku":"HI-716","price":82.37,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0574\/5511\/6439\/files\/hanna_instruments_hi_716_bromine_checker.jpg?v=1709114289"},{"product_id":"hanna-instruments-hi-729-fluoride-low-range-checker","title":"Hanna Instruments HI-729 Fluoride Low Range Checker","description":"\u003cp\u003eFluoride is one of the few chemicals that have been shown to cause significant effects in people through drinking water. Fluoride has beneficial effects on teeth at low concentrations in drinking water, but excessive exposure to fluoride in drinking water, or in combination with exposure to fluoride from other sources, can give rise to a number of adverse effects.\u003c\/p\u003e\n\u003cp\u003eThe HI-729 pocket checker is a simple and accurate way to measure low ranges of fluoride.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eKey features\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eAccurate and easy to use\u003c\/p\u003e\n\u003cp\u003eAdaptation of SPADNS method\u003c\/p\u003e\n\u003cp\u003e±0.05 ppm ±5% of reading\u003c\/p\u003e\n\u003cp\u003e0.01 ppm resolution\u003c\/p\u003e\n\u003cp\u003eDesigned to work with Hanna reagents\u003c\/p\u003e\n\u003cp\u003eLarge easy to read digits\u003c\/p\u003e\n\u003cp\u003eAuto shut-off\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eIdeal for\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eWater testing\u003c\/p\u003e\n\u003cp\u003eQuick on the spot analysis\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eSupplied with\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e2 sample cuvettes with caps\u003c\/p\u003e\n\u003cp\u003eReagents for 6 tests (re-ordering information HI-729-26 x 20 tests\u003c\/p\u003e\n\u003cp\u003eSyringe with tip\u003c\/p\u003e\n\u003cp\u003e1 x 1.5V AAA battery\u003c\/p\u003e\n\u003cp\u003eInstructions\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eSku:HI-729\u003c\/p\u003e","brand":"Hanna Instruments","offers":[{"title":"Default Title","offer_id":43713509392642,"sku":"HI-729","price":85.69,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0574\/5511\/6439\/products\/118724_4e2c8536-d78b-4799-bf74-099d8ca5045f0.jpg?v=1702562586"},{"product_id":"hanna-instruments-hi-782-nitrate-high-range-checker-for-marine","title":"Hanna Instruments HI-782 Nitrate High Range Checker for Marine","description":"\u003cp\u003e\u003cspan\u003eHI-782 Nitrate High Range Checker for Marine\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eThe HI-782 Marine Nitrate Checker provides an accurate, practical solution for the measurement of nitrate in saltwater tanks. A high range digital nitrite tester allows you to measure and quickly respond to any change in nitrite levels in marine aquariums, with clear on-screen information to take action and reduce nitrates in your aquarium quickly, preventing old tank syndrome. \u003c\/p\u003e\n\u003cp\u003eThe Hanna Nitrate HR Checker is part of our Checkers range for digital water quality measurement in aquariums.\u003c\/p\u003e\n\u003cdiv id=\"product_tabs\" class=\"product__tabs\"\u003e\n\u003cdiv class=\"tabs\"\u003e\n\u003cdiv class=\"tab specification active\"\u003e\n\u003cdiv class=\"tab__content\"\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eNitrate Range\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003ctd\u003e0.0 to 75.0 ppm (as NO3–)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNitrate Resolution\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003ctd\u003e0.1 ppm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNitrate Accuracy\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003ctd\u003e±2.0 ppm ±5% of reading\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNitrate Method\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003ctd\u003eZinc reduction method. The reaction between nitrate and the reagent causes a pink tint in the sample. This checker has been developed to work with seawater samples.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePhotometer\/Colorimeter Light Source\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003ctd\u003eLED @ 525 nm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePhotometer\/Colorimeter Light Detector\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003ctd\u003esilicon photocell\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBattery Type\/Life\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003ctd\u003e1.5V AAA ; Automatic Shut-Off after 10 minutes of non-use\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eEnvironment\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003ctd\u003e0 to 50°C (32 to 122°F); RH max 95% non-condensing\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003ctd\u003e64 g (2.3 oz.)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003ctd\u003e86.0 mm x 61.0 mm x 37.5mm (3.2 x 2.4 x 1.5”)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOrdering Information:\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003ctd\u003eHI-782 Checker HC is supplied with sample cuvettes with caps (2), marine nitrate starter kit (reagents for 10 tests), 3 mL Pasteur pipette (1), 1.5V AAA battery (1), and instruction manual.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"d-print-none\"\u003e\n\u003csection class=\"product-accessories product__accessories\"\u003e\n\u003cdiv class=\"title-container\"\u003e\n\u003ch3 class=\"section-title heading uppercase\"\u003e\u003cbr\u003e\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003c\/section\u003e\n\u003c\/div\u003e","brand":"Hanna Instruments","offers":[{"title":"Default Title","offer_id":55059164037493,"sku":"HI-782","price":71.35,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0574\/5511\/6439\/files\/marine-high-range-nitrate-checker.jpg?v=1739519359"},{"product_id":"hanna-instruments-775-freshwater-alkalinity-colorimeter-checker®hc-clearance","title":"Hanna Instruments-775 Freshwater Alkalinity Colorimeter - Checker®HC Clearance","description":"\u003cp\u003eThis instrument is fully functioning, the reagents inside expired 02\/24\u003c\/p\u003e\n\u003cp\u003eIdeal for fresh water aquariums (not suitable for salt water marine tanks).\u003c\/p\u003e\n\u003cp\u003eThe HI-775 Alkalinity Checker for fresh water is a simple, accurate and cost effective way to measure alkalinity in fresh water.\u003c\/p\u003e\n\u003cp\u003eChecker®HC is supplied with reagents for 25 tests.\u003c\/p\u003e\n\u003cp\u003eUse code HI-775-26 for future purchases.\u003c\/p\u003e\n\u003cp\u003eDesigned as a more accurate alternative to chemical test kits, it is easy to use with single button operation and a large LCD display. This mini tester also features auto shut-off to ensure a longer battery life.\u003c\/p\u003e\n\u003cp\u003eThe Hanna Instruments-775 is ideal for checking water quality, great for educational and environmental applications and for use in freshwater aquaria.\u003c\/p\u003e\n\u003cp\u003eDesigned as a more accurate alternative to chemical test kits, the Hanna Instruments-775 provides quick, accurate results in four easy steps. (See below).\u003c\/p\u003e\n\u003cp\u003eThe Hanna Instruments-775 uses a colorimetric method. The reaction causes a distinctive range of colours from yellow to blue to develop. This meter has been developed to work with fresh water samples.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003ePlease note:\u003c\/strong\u003e Any chlorine present in the sample will interfere with the reading. To remove the chlorine interference add one drop of Hanna Instruments-93755-53 Chlorine Remover to the unreacted sample prior to testing.\u003c\/p\u003e\n\u003ch3\u003eFeatures:\u003c\/h3\u003e\n\u003cul\u003e\n\u003cul\u003e\n\u003cli\u003eSmall palm-sized design\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/ul\u003e\n\u003cul\u003e\n\u003cul\u003e\n\u003cli\u003eAccurate from ±5ppm ± 5% of reading\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/ul\u003e\n\u003cul\u003e\n\u003cul\u003e\n\u003cli\u003eDedicated to a single parameter\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/ul\u003e\n\u003cul\u003e\n\u003cul\u003e\n\u003cli\u003eUses a single AAA battery\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/ul\u003e\n\u003cul\u003e\n\u003cul\u003e\n\u003cli\u003eAuto Power Off after 10 minutes in inactivity\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/ul\u003e\n\u003cul\u003e\n\u003cul\u003e\n\u003cli\u003eBuilt-in timer for timed reaction readings\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eIdeal for:\u003c\/h3\u003e\n\u003cul style=\"list-style-type: circle;\"\u003e\n\u003cli\u003eWater Quality\u003c\/li\u003e\n\u003cli\u003eEducation\u003c\/li\u003e\n\u003cli\u003eFreshwater Aquarium\u003c\/li\u003e\n\u003cli\u003eEnvironmental\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eOrder Information:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe Hanna Instruments-775 Checker®HC is supplied with 2 cuvettes and caps, alkalinity reagent kit for 25 tests (Hanna Instruments-775-26), 1 x1.5V AAA battery, and an instruction manual.\u003c\/p\u003e\n\u003cp\u003eAlso available: Hanna Instruments-775-11 Calibration set.\u003c\/p\u003e","brand":"Hanna Instruments","offers":[{"title":"Default Title","offer_id":57067352424821,"sku":"HI-775 clearance","price":59.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0574\/5511\/6439\/files\/4_c532272c-b869-48d2-a07d-e46754f8cb07.jpg?v=1730375187"},{"product_id":"hanna-instruments-hi-781-marine-nitrate-low-range-handheld-colorimeter-checker-hc-clearance","title":"Hanna Instruments HI-781 Marine Nitrate Low Range Handheld Colorimeter, Checker HC Clearance","description":"\u003cp\u003eFully functioning instrument, reagents expired 03\/26\u003c\/p\u003e\n\u003cp\u003eThe HI-781 Nitrate Checker HC is a handheld colorimeter that uses the Beer-Lambert principle to determine the concentration of nitrate colorimetrically.\u003c\/p\u003e\n\u003cp\u003eThe HI-781 is designed specifically to measure low levels of nitrate in a saltwater aquarium. The 0.00 to 5.00 range is ideal for reef aquarium maintenance\u003c\/p\u003e\n\u003cp\u003eNitrate is a by-product of the Nitrogen cycle. Excessive amounts of Nitrates in a reef aquarium can promote the growth of undesirable organisms including algae and dinoflagellates, while insufficient amounts can lead to starvation in which SPS, and other corals, will show signs including the loss of colour and paleness.\u003c\/p\u003e\n\u003cp\u003eIdeal for aquariums and marine biology\u003c\/p\u003e\n\u003cp\u003eEasier to use and more accurate than chemical test kits\u003c\/p\u003e\n\u003cp\u003eSmall size, big convenience\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eThe Checker®HC handheld colorimeter is supplied with:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eSample cuvette and cap (2)\u003c\/p\u003e\n\u003cp\u003eMarine Nitrate Low Range reagent starter kit (reagents for 25 tests)\u003c\/p\u003e\n\u003cp\u003eFilter paper (25)\u003c\/p\u003e\n\u003cp\u003eFilter holder (1)\u003c\/p\u003e\n\u003cp\u003eMixing vial and cap (1)\u003c\/p\u003e\n\u003cp\u003e5 mL syringe with tip (1)\u003c\/p\u003e\n\u003cp\u003e10 mL syringe with tip (1)\u003c\/p\u003e\n\u003cp\u003e1.5V AAA Alkaline battery (1)\u003c\/p\u003e\n\u003cp\u003eInstruction manual\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eSpecifications \u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eRange:0.00 to 5.00 ppm (mg\/L) NO-\u003c\/p\u003e\n\u003cp\u003eResolution: 0.01 ppm\u003c\/p\u003e\n\u003cp\u003eAccuracy @ 25°C\/77°F: ±0.25 ppm ±2% of reading\u003c\/p\u003e\n\u003cp\u003eLight Source: LED @ 525 nm\u003c\/p\u003e\n\u003cp\u003eLight Detector: silicon photocell\u003c\/p\u003e\n\u003cp\u003eMethod: zinc reduction method\u003c\/p\u003e\n\u003cp\u003eAuto-off: after ten minutes of non-use\u003c\/p\u003e\n\u003cp\u003eEnvironment: 0 to 50°C (32 to 122°F); RH max 95% non-condensing\u003c\/p\u003e\n\u003cp\u003eBattery Type: (1) 1.5V AAA\u003c\/p\u003e\n\u003cp\u003eOrdering Information: HI781 Checker HC is supplied with sample cuvettes with caps (2), nitrate reagent starter kit (reagents for 25 tests), filter holder, 10 mL syringe, 5 mL syringe with tip, mixing vial with cap, battery, and instructions.\u003c\/p\u003e\n\u003cp\u003eAccessories: HI781-25 Reagent set for 25 tests, HI781-11 Calibration set\u003c\/p\u003e\n\u003cp\u003eSku: HI-781\u003c\/p\u003e","brand":"Hanna Instruments","offers":[{"title":"Default Title","offer_id":57067399905653,"sku":"HI-781 clearance","price":64.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0574\/5511\/6439\/files\/2_f7ed3091-637e-4b9e-8612-a0e427748317.jpg?v=1733409723"},{"product_id":"hanna-instruments-hi-736-phosphorus-marine-ultra-low-range-colorimeter-checker-hc-clearance","title":"Hanna Instruments HI-736 Phosphorus Marine Ultra-Low Range Colorimeter - Checker HC Clearance","description":"\u003cp\u003eFully functioning Instrument, reagents expired 04\/24\u003c\/p\u003e\n\u003cp\u003eIdeal for use with coral reef tanks and salt water aquariums. While tiny amounts of phosphorus are needed to sustain life in the tank, more phosphorus (as\u003c\/p\u003e\n\u003cp\u003ephosphate) is introduced through feed, decaying plants, animal waste, and even tap water. Too much can deplete oxygen levels, encourage growth of unwanted algae types and inhibit\u003c\/p\u003e\n\u003cp\u003ethe calcification by corals and coralline algaes.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eChecker range:\u003c\/strong\u003e 0 to 200 ppb.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eMain Benefits\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eTesting is quick and easy\u003c\/p\u003e\n\u003cp\u003eHigh precision results - more accurate than chemical test kits\u003c\/p\u003e\n\u003cp\u003eAuto shut-off feature means the Checker cannot be left on by mistake\u003c\/p\u003e\n\u003cp\u003eFully portable, fitting easily into both palm and pocket\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eSupplied with\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e2 sample cuvettes\u003c\/p\u003e\n\u003cp\u003eCuvette cap\u003c\/p\u003e\n\u003cp\u003eStarter pack of reagents x 6 tests (re-ordering information: HI-736-25 x 25 tests)\u003c\/p\u003e\n\u003cp\u003e1 x 1.5 AAA battery\u003c\/p\u003e\n\u003cp\u003eInstructions\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/testallwater.co.uk\/collections\/hanna-reagents\/products\/hanna-instruments-hi-736-25-reagents-for-hi-736-ulr-marine-phosphorus-checker-hc\" rel=\"noopener noreferrer\" target=\"_blank\"\u003eReplacement Reagents For HI-736\u003c\/a\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eSku:HI-736\u003c\/p\u003e","brand":"Hanna Instruments","offers":[{"title":"Default Title","offer_id":57067446305141,"sku":"HI-736 expiry 04\/24","price":59.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0574\/5511\/6439\/files\/3_e7c65e32-0890-4680-81b6-2d1acf1ce4a2.jpg?v=1733409007"},{"product_id":"hanna-instruments-hi-736-phosphorus-marine-ultra-low-range-colorimeter-checker-hc-clearance-1","title":"Hanna Instruments HI-736 Phosphorus Marine Ultra-Low Range Colorimeter - Checker HC Clearance","description":"\u003cp\u003eFully functioning Instrument, reagents expired 01\/26\u003c\/p\u003e\n\u003cp\u003eIdeal for use with coral reef tanks and salt water aquariums. While tiny amounts of phosphorus are needed to sustain life in the tank, more phosphorus (as\u003c\/p\u003e\n\u003cp\u003ephosphate) is introduced through feed, decaying plants, animal waste, and even tap water. Too much can deplete oxygen levels, encourage growth of unwanted algae types and inhibit\u003c\/p\u003e\n\u003cp\u003ethe calcification by corals and coralline algaes.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eChecker range:\u003c\/strong\u003e 0 to 200 ppb.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eMain Benefits\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eTesting is quick and easy\u003c\/p\u003e\n\u003cp\u003eHigh precision results - more accurate than chemical test kits\u003c\/p\u003e\n\u003cp\u003eAuto shut-off feature means the Checker cannot be left on by mistake\u003c\/p\u003e\n\u003cp\u003eFully portable, fitting easily into both palm and pocket\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eSupplied with\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e2 sample cuvettes\u003c\/p\u003e\n\u003cp\u003eCuvette cap\u003c\/p\u003e\n\u003cp\u003eStarter pack of reagents x 6 tests (re-ordering information: HI-736-25 x 25 tests)\u003c\/p\u003e\n\u003cp\u003e1 x 1.5 AAA battery\u003c\/p\u003e\n\u003cp\u003eInstructions\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/testallwater.co.uk\/collections\/hanna-reagents\/products\/hanna-instruments-hi-736-25-reagents-for-hi-736-ulr-marine-phosphorus-checker-hc\" rel=\"noopener noreferrer\" target=\"_blank\"\u003eReplacement Reagents For HI-736\u003c\/a\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eSku:HI-736\u003c\/p\u003e","brand":"Hanna Instruments","offers":[{"title":"Default Title","offer_id":57067621155189,"sku":"HI-736 expiry 01\/26","price":59.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0574\/5511\/6439\/files\/3_e7c65e32-0890-4680-81b6-2d1acf1ce4a2.jpg?v=1733409007"},{"product_id":"hanna-instruments-hi-774-marine-phosphate-ulr-checker-clearance","title":"Hanna Instruments HI-774 Marine Phosphate ULR Checker Clearance","description":"\u003cp\u003eThe instrument is fully functioning however, the reagents have expired 10\/25. \u003c\/p\u003e\n\u003cp\u003ePhosphate is an important parameter to measure in aquaculture and aquariums. Levels that are too high can lead to extensive algae growth, depleted dissolved oxygen levels, and ultimately can be fatal to many types of fish and aquatic life.\u003c\/p\u003e\n\u003cp\u003eThe HI-774 provides a simple, accurate and cost effective way to measure phosphate from 0.00 to 0.90 ppm.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFeatures:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eEasier to use and more accurate than chemical test kits\u003c\/p\u003e\n\u003cp\u003eDedicated to a single parameter\u003c\/p\u003e\n\u003cp\u003eSmall size, big convenience\u003c\/p\u003e\n\u003cp\u003eIdeal for: Aquariums, Environmental, Aquaculture, Water Quality\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eSupplied with\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e2 sample cuvettes\u003c\/p\u003e\n\u003cp\u003eCuvette cap\u003c\/p\u003e\n\u003cp\u003eStarter pack of reagents x 6 tests (re-ordering information: HI-774-25 x 25 tests)\u003c\/p\u003e\n\u003cp\u003e1 x 1.5 AAA battery\u003c\/p\u003e\n\u003cp\u003eInstructions\u003c\/p\u003e\n\u003cp\u003eSku: HI-774\u003c\/p\u003e","brand":"Hanna Instruments","offers":[{"title":"Default Title","offer_id":57069952860533,"sku":"HI-774 Expiry 10\/25","price":59.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0574\/5511\/6439\/files\/hanna_instruments_hi_774_marine_phosphate_ulr_checker.jpg?v=1684744189"}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0574\/5511\/6439\/collections\/2_00633e21-b75d-4465-96e7-55aa05cdc200.jpg?v=1761137672","url":"https:\/\/testallwater.co.uk\/collections\/hanna-checkers.oembed?page=3","provider":"Test All Water","version":"1.0","type":"link"}