{"title":"Checkers for Marine","description":null,"products":[{"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-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-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-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\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 2.50 ppm (mg\/L)\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 (mg\/L)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePrecision\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003ctd\u003e3% of reading ±0.03 ppm (mg\/L) @ 25°C\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 @ 525 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 2 minutes of non-use and after read\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003ctd\u003e81.5 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 (2.25 oz.)\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 USEPA method 330.5. The reaction between free chlorine and the DPD reagent will cause a pint tint in the sample.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cb\u003ePLEASE NOTE:\u003c\/b\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cb\u003eIn some cases, samples may contain other parameters which may interfere with results\u003c\/b\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInterference may be caused by:\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003ctd\u003eBromine, Iodine, Ozone, Oxidized forms of Chromium and Manganese. In case of water with hardness greater than 500 mg\/L CaCO\u003csub\u003e3\u003c\/sub\u003e, shake the sample for approximately 2 minutes after adding the powder reagent.\u003cbr\u003e\n\u003cul\u003e\n\u003cli\u003eIf the water used for this procedure has an alkalinity value greater than 250 mg\/L CaCO\u003csub\u003e3\u003c\/sub\u003e\u003cspan\u003e \u003c\/span\u003eor acidity value greater than 150 mg\/L CaCO\u003csub\u003e3\u003c\/sub\u003e, the colour of the sample may develop only partially, or may rapidly fade. To resolve this, neutralise the sample with diluted HCl or NaOH.\u003c\/li\u003e\n\u003c\/ul\u003e\n\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","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-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-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-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-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-hi-781-marine-nitrate-low-range-handheld-colorimeter-checker-hc","title":"Hanna Instruments HI-781 Marine Nitrate Low Range Handheld Colorimeter, Checker HC","description":"\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":43122068422914,"sku":"HI-781","price":71.35,"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-780-marine-ph-checker-saltwater-colorimeter","title":"Hanna Instruments-HI-780 Marine pH Checker Saltwater Colorimeter","description":"\u003cp\u003eThe HI-780 Checker HC is a simple, accurate, and cost effective way to measure pH in seawater. Designed as a more accurate alternative to chemical test kits, this handheld colorimeter provides quick, accurate pH testing results.\u003c\/p\u003e\n\u003cp\u003epH of ocean surface water is normally 7.5.to 8.5 pH. Over the years however, acidification tendency is to decrease 0.1 to 0.2 pH units\/century. 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. The greater attraction to carbonate over calcium can adversely affect skeleton building and can limit coral growth.\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 class=\"MsoNormal\"\u003e\u003cstrong\u003eSpecifications\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003eRange:6.3 to 8.6 pH\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003eResolution:0.1 pH\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003eAccuracy @ 25°C\/77°F:±0.2 pH\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003eLight Source:LED @ 525 nm\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003eLight Detector:silicon photocell\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003eMethod :colorimetric adaptation of phenol red method\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003eAuto-off:after ten minutes of non-use\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003eEnvironment:0 to 50°C (32 to 122°F); RH max 95% non-condensing\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003eBattery Type: (1) 1.5V AAA\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003eOrdering Information: HI-780 Checker HC is supplied with sample cuvettes with caps (2), pH reagent starter set, battery, and instructions\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003eAccessories purchased separately: HI-780-25 Reagent set for approx. - 100 tests. HI-780-11 Calibration set\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003eSKu:HI-780\u003c\/p\u003e","brand":"Hanna Instruments","offers":[{"title":"Default Title","offer_id":43131202109698,"sku":"HI-780","price":71.35,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0574\/5511\/6439\/files\/3_d8f1478c-0b60-4c8c-a16f-fb921c11ae81.jpg?v=1718201459"},{"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\/1_49fc8170-847e-4a64-b954-78266767b09a.png?v=1779119640"},{"product_id":"hanna-instruments-copper-high-range-colorimeter-checker-hc","title":"Hanna Instruments HI-702 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. The reaction between copper and the bicinchoninate reagent causes a purple tint in the sample\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e \u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003eSku: HI-702\u003c\/p\u003e","brand":"Hanna Instruments","offers":[{"title":"Default Title","offer_id":43702831022338,"sku":"HI-702","price":80.28,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0574\/5511\/6439\/files\/hanna_instruments_702_copper_high_range_checker_hc.jpg?v=1684745954"},{"product_id":"hanna-instruments-marine-phosphate-ulr-checker","title":"Hanna Instruments HI-774 Marine Phosphate ULR Checker","description":"\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":43702835839234,"sku":"HI-774","price":71.35,"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"},{"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 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 with caps (2),\u003c\/p\u003e\n\u003cp\u003eIron low range reagent starter kit x 25 (re-ordering information HI-746-25 x 25 tests),\u003c\/p\u003e\n\u003cp\u003eglass cylinders with rubber cap (2),\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-746\u003c\/p\u003e\n\u003cp\u003e\u003c\/p\u003e","brand":"Hanna Instruments","offers":[{"title":"HI-746","offer_id":56409674580341,"sku":"HI-746","price":85.69,"currency_code":"GBP","in_stock":true},{"title":"HI-746- REAGENTS-EXP-06\/25","offer_id":56409674613109,"sku":"HI-746 expiry 06\/25","price":64.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0574\/5511\/6439\/products\/118692_b36cfcd2-3e6c-476a-98f4-10c583cc9aaa0.jpg?v=1764344817"},{"product_id":"hanna-instruments-hi-727-colour-of-water-checker","title":"Hanna Instruments HI-727 Colour Of Water Checker","description":"\u003cp\u003eThe  Hanna Instruments HI-727 Checker®HC provides a simple, accurate and cost-effective way to measure the colour of water. \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e Used in drinking water and wastewater, the colour of water may indicate the presence of undesirable and potentially harmful material, such as organic matter.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eTrue colour is caused by dissolved compounds in water. 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_2473afdb-83ce-49fc-9d7f-1a549d803b97.png?v=1780912724"},{"product_id":"hanna-instruments-772-marine-alkalinity-dkh-checker-hc-expired-reagents","title":"Hanna Instruments-772 Marine Alkalinity (dKH) Checker HC Clearance","description":"\u003cp style=\"text-align: left;\"\u003e\u003cstrong\u003eFully functioning instrument, reagents expired 08\/23\u003c\/strong\u003e\u003c\/p\u003e\n\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. The reaction causes a distinctive range of colours from yellow to green to blue to develop\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 HI-772-26\u003c\/p\u003e\n\u003cp\u003e1 x 1.5 AAA battery\u003c\/p\u003e\n\u003cp\u003eInstructions\u003c\/p\u003e\n\u003cp\u003eSku: HI-772\u003c\/p\u003e","brand":"TEST ALL WATER","offers":[{"title":"Default Title","offer_id":54903499587957,"sku":"HI-772 expiry 08\/23","price":55.55,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0574\/5511\/6439\/files\/2_05daa285-5fd2-47ee-b12f-5923f8c5cd50.jpg?v=1735816364"},{"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-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-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"}],"url":"https:\/\/testallwater.co.uk\/collections\/checkers-for-marine.oembed?page=2","provider":"Test All Water","version":"1.0","type":"link"}