{"title":"Lab Checkers","description":null,"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\/43f668bb-d9c2-45f4-ac8e-cb13aa137212.jpg?v=1782727823"},{"product_id":"hanna-instruments-758-marine-calcium-handheld-colorimeter-checker®hc","title":"Hanna Instruments-758 Marine Calcium Handheld Colorimeter - Checker®HC","description":"\u003cp\u003eIdeal for salt water aquariums and coral reef tanks.\u003c\/p\u003e\n\u003cp\u003eDesigned to measure calcium in reef tanks, the Hanna Calcium Checker is perfect for corals and marine life.\u003c\/p\u003e\n\u003cp\u003eChecker®HC is supplied with reagents for 25 tests. Use code Hanna Instruments-758-26 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 to measure calcium in reef tanks, the Hanna Calcium Checker is perfect for corals and marine life.\u003c\/p\u003e\n\u003cul\u003e\n\u003cul\u003e\n\u003cli\u003eEasy to use\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/ul\u003e\n\u003cul\u003e\n\u003cul\u003e\n\u003cli\u003eAccurate results every time\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/ul\u003e\n\u003cul\u003e\n\u003cul\u003e\n\u003cli\u003eExceptional price\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/ul\u003e\n\u003cul\u003e\n\u003cul\u003e\n\u003cli\u003eLarge LCD display\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/ul\u003e\n\u003cbr\u003eUses top quality technology to deliver high precision results.\u003cbr\u003e\n\u003cp\u003eThe Hanna Instruments-758 Calcium Checker is a simple, accurate and cost effective way to measure marine calcium in water.\u003c\/p\u003e\n\u003cbr\u003e\n\u003cp\u003eDesigned as a more accurate alternative to chemical test kits, the HI 758 provides quick, accurate results in four easy steps;\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eAdd 1ml of reagent A and add 9ml of deionised water to cuvette.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul\u003e\n\u003cli\u003eInsert cuvette into the Checker and zero it out.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul\u003e\n\u003cli\u003eRemove cuvette and add 0.1ml sample to be tested and 1 packet of reagent B\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul\u003e\n\u003cli\u003eReinsert sample and click the button to measure your results or press and hold the button for 3 seconds for a time reaction reading.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cbr\u003eThe contoured style of the Hanna Instruments-758 Calcium 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.\u003cbr\u003e\n\u003ch3\u003eIdeal For:\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eSalt water aquariums and coral reef tanks\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul\u003e\n\u003cli\u003eWater Quality\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul\u003e\n\u003cli\u003eEnvironmental\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul\u003e\n\u003cli\u003eEducation\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\u003cstrong\u003eMain Benefits:\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\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\u003cstrong\u003eSupplied with\u003c\/strong\u003e\u003cbr\u003e\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 x 25 (re-ordering information: Hanna Instruments-758-26)\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\u003cbr\u003e\n\u003cp\u003eCalibration set also available Hanna Instruments-758-11, and pipette tips Hanna Instruments-731349.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Hanna Instruments","offers":[{"title":"Default Title","offer_id":40354379432087,"sku":"HI-758","price":71.35,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0574\/5511\/6439\/files\/2_7cf16d83-0305-4f16-af67-dfee42ed6170.jpg?v=1732284007"},{"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-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-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-700-ammonia-low-range-colorimeter-checker®hc-0-00-to-3-00ppm","title":"Hanna Instruments-700 Ammonia Low Range Colorimeter - Checker HC (0.00 to 3.00ppm)","description":"\u003cp\u003eThe Hanna Instruments-700 Ammonia Low Range Checker is a simple, accurate and cost effective way to measure low ranges of ammonia in fresh water.\u003c\/p\u003e\n\u003cp\u003eDesigned as a more accurate alternative to chemical test kits, the Hanna Instruments-700 provides quick, accurate results in four easy steps.\u003c\/p\u003e\n\u003cp\u003eChecker®HC is supplied with reagents for 25 tests. Use code Hanna Instruments-700-25 for future purchases.\u003c\/p\u003e\n\u003cdiv class=\"row\"\u003e\n\u003cdiv style=\"text-align: center;\" 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 fresh water aquariums\u003c\/h3\u003e\n\u003cbr\u003eThe Hanna Instruments-700 Ammonia Low Range Checker is a simple, accurate and cost effective way to measure low ranges of ammonia in fresh water.\u003cbr\u003e\n\u003cp\u003eDesigned as a more accurate alternative to chemical test kits, the Hanna Instruments-700 provides quick, accurate results in four easy steps.\u003c\/p\u003e\n\u003cbr\u003eHanna Instruments-700 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.\u003c\/div\u003e\n\u003cdiv class=\"section-text col-xs-12 rem-p-l rem-p-r\"\u003e\n\u003ch3\u003eIdeal for\u003c\/h3\u003e\nFreshwater Aquariums\u003cbr\u003eWater Quality\u003cbr\u003eEducation\u003cbr\u003e\n\u003cp\u003eWastewater\u003c\/p\u003e\nEnvironmental\u003c\/div\u003e\n\u003cdiv class=\"section-text col-xs-12 rem-p-l rem-p-r\"\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003cdiv class=\"section-text col-xs-12 rem-p-l rem-p-r\"\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003cstrong\u003e\u003c\/strong\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"text-align: center;\" class=\"section-row section 1\"\u003e\u003cstrong\u003eKey features\u003c\/strong\u003e\u003c\/div\u003e\n\u003cdiv style=\"text-align: center;\" class=\"section-row section 1\"\u003e\n\u003cbr\u003eSmall palm-sized design\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\" style=\"text-align: center;\"\u003e\n\u003cp style=\"text-align: center;\"\u003eAccurate from ±0.05ppm ± 5% of reading\u003c\/p\u003e\nDedicated to a single parameter\u003cbr\u003e\n\u003cp style=\"text-align: center;\"\u003eUses a single AAA battery\u003c\/p\u003e\n\u003cbr\u003e\n\u003cp style=\"text-align: center;\"\u003eAuto Power Off after 10 minutes in inactivity\u003c\/p\u003e\nBuilt-in timer for timed reaction readings\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Hanna Instruments","offers":[{"title":"Default Title","offer_id":40354492317847,"sku":"HI-700","price":71.35,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0574\/5511\/6439\/files\/1_48246dfc-8982-4e74-852c-99af64ef960e.png?v=1780642786"},{"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. 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The reaction between bromine and the reagent causes a pink tint in the sample\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 \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\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\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\/1_64cf139c-4944-4cfe-8d14-eb9bd04573bd.png?v=1780478491"},{"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"}],"url":"https:\/\/testallwater.co.uk\/collections\/lab-checkers.oembed","provider":"Test All Water","version":"1.0","type":"link"}