{"title":"Hanna Test Kits","description":"\u003cp\u003eHanna Test Kits Products provide a quick and reliable way to check water quality. Designed for ease of use, these kits measure important factors like pH, chlorine, hardness, and more—helping you keep your water clean, safe, and well-balanced. Whether for home, pool, or professional use, Hanna test kits deliver accurate results you can trust every time.\u003c\/p\u003e","products":[{"product_id":"hanna-instruments-775-freshwater-alkalinity-colorimeter-checker®hc","title":"Hanna Instruments-775 Freshwater Alkalinity Colorimeter - Checker®HC","description":"\u003cp\u003eIdeal for fresh water aquariums (not suitable for salt water marine tanks).\u003c\/p\u003e\n\u003cp\u003eThe HI-775 Alkalinity Checker for fresh water is a simple, accurate and cost effective way to measure alkalinity in fresh water.\u003c\/p\u003e\n\u003cp\u003eChecker®HC is supplied with reagents for 25 tests.\u003c\/p\u003e\n\u003cp\u003eUse code HI-775-26 for future purchases.\u003c\/p\u003e\n\u003cp\u003eDesigned as a more accurate alternative to chemical test kits, it is easy to use with single button operation and a large LCD display. This mini tester also features auto shut-off to ensure a longer battery life.\u003c\/p\u003e\n\u003cp\u003eThe Hanna Instruments-775 is ideal for checking water quality, great for educational and environmental applications and for use in freshwater aquaria.\u003c\/p\u003e\n\u003cp\u003eDesigned as a more accurate alternative to chemical test kits, the Hanna Instruments-775 provides quick, accurate results in four easy steps. (See below).\u003c\/p\u003e\n\u003cp\u003eThe Hanna Instruments-775 uses a colorimetric method. The reaction causes a distinctive range of colours from yellow to blue to develop. This meter has been developed to work with fresh water samples.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003ePlease note:\u003c\/strong\u003e Any chlorine present in the sample will interfere with the reading. To remove the chlorine interference add one drop of Hanna Instruments-93755-53 Chlorine Remover to the unreacted sample prior to testing.\u003c\/p\u003e\n\u003ch3\u003eFeatures:\u003c\/h3\u003e\n\u003cul\u003e\n\u003cul\u003e\n\u003cli\u003eSmall palm-sized design\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/ul\u003e\n\u003cul\u003e\n\u003cul\u003e\n\u003cli\u003eAccurate from ±5ppm ± 5% of reading\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/ul\u003e\n\u003cul\u003e\n\u003cul\u003e\n\u003cli\u003eDedicated to a single parameter\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/ul\u003e\n\u003cul\u003e\n\u003cul\u003e\n\u003cli\u003eUses a single AAA battery\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/ul\u003e\n\u003cul\u003e\n\u003cul\u003e\n\u003cli\u003eAuto Power Off after 10 minutes in inactivity\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/ul\u003e\n\u003cul\u003e\n\u003cul\u003e\n\u003cli\u003eBuilt-in timer for timed reaction readings\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eIdeal for:\u003c\/h3\u003e\n\u003cul style=\"list-style-type: circle;\"\u003e\n\u003cli\u003eWater Quality\u003c\/li\u003e\n\u003cli\u003eEducation\u003c\/li\u003e\n\u003cli\u003eFreshwater Aquarium\u003c\/li\u003e\n\u003cli\u003eEnvironmental\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eOrder Information:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe Hanna Instruments-775 Checker®HC is supplied with 2 cuvettes and caps, alkalinity reagent kit for 25 tests (Hanna Instruments-775-26), 1 x1.5V AAA battery, and an instruction manual.\u003c\/p\u003e\n\u003cp\u003eAlso available: Hanna Instruments-775-11 Calibration set.\u003c\/p\u003e","brand":"Hanna Instruments","offers":[{"title":"Default Title","offer_id":40354374516887,"sku":"HI-775","price":68.31,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0574\/5511\/6439\/files\/4_c532272c-b869-48d2-a07d-e46754f8cb07.jpg?v=1730375187"},{"product_id":"hanna-instruments-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-3833-phosphate-test-kit","title":"Hanna Instruments-3833 Phosphate test kit","description":"\u003cdiv itemprop=\"description\" id=\"product-description-short\" class=\"product__description_short\"\u003e\n\u003cp\u003ePhosphate is used in water treatment, heating systems and cooling systems as a corrosion inhibitor. It is also an essential nutrient in agriculture and horticulture which requires monitoring.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"product-features product__features\"\u003e\n\u003cdiv class=\"feature\"\u003e\n\u003csvg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"13.987\" height=\"10.123\" viewbox=\"0 0 13.987 10.123\"\u003e\u003cg transform=\"translate(-305.142 -213.686)\"\u003e\u003cpath class=\"a\" d=\"M309.809,222a3.892,3.892,0,0,1,.262-.345q3.768-3.778,7.539-7.551a2.462,2.462,0,0,1,.289-.267.763.763,0,0,1,1.017.106.788.788,0,0,1,.043,1.025,2.512,2.512,0,0,1-.188.2l-8.273,8.275a.831.831,0,0,1-1.394-.01q-1.854-1.854-3.707-3.71a.8.8,0,0,1-.182-.915.727.727,0,0,1,.818-.43,1.16,1.16,0,0,1,.535.3c1,.985,1.989,1.983,2.979,2.98A3.938,3.938,0,0,1,309.809,222Z\" transform=\"translate(0)\"\u003e\u003c\/path\u003e\u003c\/g\u003e\u003c\/svg\u003e\u003cspan\u003e \u003c\/span\u003e\u003cspan\u003eRange: 0 to 5mg\/L\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"feature\"\u003e\n\u003csvg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"13.987\" height=\"10.123\" viewbox=\"0 0 13.987 10.123\"\u003e\u003cg transform=\"translate(-305.142 -213.686)\"\u003e\u003cpath class=\"a\" d=\"M309.809,222a3.892,3.892,0,0,1,.262-.345q3.768-3.778,7.539-7.551a2.462,2.462,0,0,1,.289-.267.763.763,0,0,1,1.017.106.788.788,0,0,1,.043,1.025,2.512,2.512,0,0,1-.188.2l-8.273,8.275a.831.831,0,0,1-1.394-.01q-1.854-1.854-3.707-3.71a.8.8,0,0,1-.182-.915.727.727,0,0,1,.818-.43,1.16,1.16,0,0,1,.535.3c1,.985,1.989,1.983,2.979,2.98A3.938,3.938,0,0,1,309.809,222Z\" transform=\"translate(0)\"\u003e\u003c\/path\u003e\u003c\/g\u003e\u003c\/svg\u003e\u003cspan\u003e \u003c\/span\u003e\u003cspan\u003eColormetric Method\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"feature\"\u003e\n\u003cspan\u003e\u003c\/span\u003e\u003cbr\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"feature\"\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eMethod\u003c\/td\u003e\n\u003ctd\u003e \u003c\/td\u003e\n\u003ctd\u003eColourimetric\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRange\u003c\/td\u003e\n\u003ctd\u003e \u003c\/td\u003e\n\u003ctd\u003e0-5 mg\/L\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSmallest Increment\u003c\/td\u003e\n\u003ctd\u003e \u003c\/td\u003e\n\u003ctd\u003e1 mg\/L\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eChemical Method\u003c\/td\u003e\n\u003ctd\u003e \u003c\/td\u003e\n\u003ctd\u003eAscorbic acid\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNumber of Tests\u003c\/td\u003e\n\u003ctd\u003e \u003c\/td\u003e\n\u003ctd\u003e50\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e \u003c\/td\u003e\n\u003ctd\u003e160 g\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eOur test kits measure the strength or weakness of a chemical presence according to the degree of colour saturation. Ie – if it is pale in colour, then the chemical concentration is low. If the colour is strong, then the chemical concentration is high. Simply add the reagent to the compound to be tested and match the colour gained against a colour chart included in the kit.\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003ePhosphate test kit for irrigation water\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe orthophosphate level in mg\/L (or ppm) is determined by a Colorimetric method. Ammonium molybdate and potassium antimonyl tartrate react in acid medium with orthophosphate to form a phosphomolybdate complex that is reduced to intensely coloured molybdenum blue by ascorbic acid. The colour intensity of the solution determines the phosphate concentration. Phosphates can be classified as ortho, condensed or organically bound. As with existing test kits on the market, the HANNA Phosphate Test Kit will only determine ortho phosphate levels.\u003c\/p\u003e\n\u003cp\u003ePhosphates are widely introduced into the environment from such sources as agricultural fertilisers, cleaning and laundering products, boiler water conditioners and drinking water treatment aids. At high levels, phosphates stimulate the growth of photosynthetic organisms which may contribute to eutrophication of lakes, rivers and ponds. This makes it important to monitor and control phosphate discharges into the environment.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eOrder information\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe Hanna Instruments-3833 test kit is supplied with the following; \u003cbr\u003e20mL plastic beaker, colour comparison cube and 50 packets phosphate reagent.\u003c\/p\u003e\n\u003cp\u003eCheck out our Checker® HC Handheld Colorimeters – a highly-accurate and affordable way to test for chemicals using a gadget that sits perfectly in the palm of your hand and also fits nicely into your pocket.\u003c\/p\u003e","brand":"Hanna Instruments","offers":[{"title":"Default Title","offer_id":40354386051223,"sku":"HI-3833","price":28.79,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0574\/5511\/6439\/files\/1_78450ef1-b7e7-463d-b44a-44d98a8d5aab.jpg?v=1730293746"},{"product_id":"hanna-instruments-771-chlorine-ultra-high-range-handheld-colorimeter-checker®hc","title":"Hanna Instruments-771 Chlorine Ultra High Range Handheld Colorimeter, Checker®HC","description":"\u003cp\u003eThe Hanna Instruments 771 Chlorine Ultra High Range Handheld Colorimeter is a cutting edge, portable device designed for precise measurement of chlorine levles in water. With its ultra-high range capability, this colorimeter is perfect for use in water treatment, swimming pools, and industrial processes where accurate chlorine monitoring is essential. \u003c\/p\u003e\n\u003cp\u003eFeaturing an intuitive interface, and a compact design, this Checker HC is user-friendly and ideal for on-the-go testing. \u003c\/p\u003e\n\u003cp\u003eSimple to use, you add a sample to the cuvette, insert it into the colorimeter, and receive fast, reliable results with just the push of a button. The built-in calibration feature ensures concsitent accuracy, while the large, easy-to-read display makes interpreting results extremely straightforward.\u003c\/p\u003e\n\u003ch3\u003eFeatures\u003c\/h3\u003e\n\u003cp\u003eSmall palm-sized design\u003c\/p\u003e\n\u003cp\u003eAccurate from ±3 ppb ±5% of reading\u003c\/p\u003e\n\u003cp\u003eDedicated to a single parameter\u003c\/p\u003e\n\u003cp\u003eUses a single AAA battery\u003c\/p\u003e\n\u003cp\u003eAuto Power Off after 10 minutes in inactivity\u003c\/p\u003e\n\u003cp\u003eBuilt-in timer for timed reaction readings\u003c\/p\u003e\n\u003ch3\u003eIdeal for\u003c\/h3\u003e\n\u003cp\u003eWater Quality\u003c\/p\u003e\n\u003cp\u003eEducation\u003c\/p\u003e\n\u003cp\u003ePlating\u003c\/p\u003e\n\u003cp\u003eEnvironmental\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e","brand":"Hanna Instruments","offers":[{"title":"Default Title","offer_id":40354394865815,"sku":"HI-771","price":85.69,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0574\/5511\/6439\/files\/1_6f9330bd-5b41-4136-83e2-c3896af45302.png?v=1780735436"},{"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-717-high-range-phosphate-colorimeter-checker®hc","title":"Hanna Instruments-717 High Range Phosphate Colorimeter - Checker HC","description":"\u003cp\u003eIdeal for aquariums.\u003c\/p\u003e\n\u003cdiv class=\"feature\"\u003e\n\u003cspan\u003e \u003c\/span\u003e\u003cspan\u003e0.0 to 30.0 ppm\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"feature\"\u003e\n\u003csvg viewbox=\"0 0 13.987 10.123\" height=\"10.123\" width=\"13.987\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"\u003e\u003cg transform=\"translate(-305.142 -213.686)\"\u003e\u003cpath transform=\"translate(0)\" d=\"M309.809,222a3.892,3.892,0,0,1,.262-.345q3.768-3.778,7.539-7.551a2.462,2.462,0,0,1,.289-.267.763.763,0,0,1,1.017.106.788.788,0,0,1,.043,1.025,2.512,2.512,0,0,1-.188.2l-8.273,8.275a.831.831,0,0,1-1.394-.01q-1.854-1.854-3.707-3.71a.8.8,0,0,1-.182-.915.727.727,0,0,1,.818-.43,1.16,1.16,0,0,1,.535.3c1,.985,1.989,1.983,2.979,2.98A3.938,3.938,0,0,1,309.809,222Z\" class=\"a\"\u003e\u003c\/path\u003e\u003c\/g\u003e\u003c\/svg\u003e\u003cspan\u003e \u003c\/span\u003e\u003cspan\u003ePhosphate\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"feature\"\u003e\n\u003cspan\u003e\u003c\/span\u003e\u003cbr\u003e\n\u003c\/div\u003e\n\u003cp\u003eThe contoured style of the Hanna Instruments-717 Phosphate, high range Checker is designed to fit in the palm of your hand.\u003c\/p\u003e\n\u003cp\u003eChecker®HC is supplied with reagents for 20 tests. Use code Hanna Instruments-717-25 (40 tests) for future purchases.\u003c\/p\u003e\n\u003cdiv class=\"row\"\u003e\n\u003cdiv id=\"description\" class=\"section-row section 1\"\u003e\n\u003cdiv class=\"section-text col-xs-12 rem-p-l rem-p-r\"\u003e\n\u003cp\u003eThe large LCD is easy to read and the auto shut-off feature ensures the battery life will not be drained if you forget to turn it off.\u003c\/p\u003e\n\u003ch3\u003eIdeal for\u003c\/h3\u003e\n\u003cul\u003e\n\u003cul\u003e\n\u003cli\u003eAquaculture\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/ul\u003e\n\u003cul\u003e\n\u003cul\u003e\n\u003cli\u003eGeneral water quality testing\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/ul\u003e\n\u003cul\u003e\n\u003cul\u003e\n\u003cli\u003eWaste water applications\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/ul\u003e\n\u003cul\u003e\n\u003cul\u003e\n\u003cli\u003eDrinking water analysis\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/ul\u003e\n\u003cul\u003e\n\u003cul\u003e\n\u003cli\u003eAgriculture\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/ul\u003e\n\u003cbr\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"row\"\u003e\n\u003cdiv class=\"section-row section four\"\u003e\n\u003cdiv class=\"section-text col-xs-12 col-sm-7 add-p-r rem-p-l\"\u003e\n\u003ch3\u003eMain Benefits\u003c\/h3\u003e\n\u003cul\u003e\n\u003cul\u003e\n\u003cli\u003eTesting is quick and easy\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/ul\u003e\n\u003cul\u003e\n\u003cul\u003e\n\u003cli\u003eHigh precision results - more accurate than chemical test kits\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/ul\u003e\n\u003cul\u003e\n\u003cul\u003e\n\u003cli\u003eAuto shut-off feature means the Checker cannot be left on by mistake\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/ul\u003e\n\u003cul\u003e\n\u003cul\u003e\n\u003cli\u003eFully portable, fitting easily into both palm and pocket\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eSupplied with\u003c\/h3\u003e\n\u003cul\u003e\n\u003cul\u003e\n\u003cli\u003e2 sample cuvettes\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/ul\u003e\n\u003cul\u003e\n\u003cul\u003e\n\u003cli\u003eCuvette cap\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/ul\u003e\n\u003cul\u003e\n\u003cul\u003e\n\u003cli\u003eStarter pack of reagents x 20 tests \u003cstrong\u003e(re-ordering information: Hanna Instruments-717-25 x 40 tests)\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/ul\u003e\n\u003cul\u003e\n\u003cul\u003e\n\u003cli\u003e1 x 1.5 AAA battery\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/ul\u003e\n\u003cul\u003e\n\u003cul\u003e\n\u003cli\u003eInstructions\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/ul\u003e\n\u003cp\u003eAlso available: \u003cstrong\u003eHanna Instruments-717-11 Calibration set\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Hanna Instruments","offers":[{"title":"Default Title","offer_id":40354486124695,"sku":"HI-717","price":71.35,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0574\/5511\/6439\/files\/2_fd18fb91-f69b-4837-ab89-b0875db9a7cd.jpg?v=1728299924"},{"product_id":"hanna-instruments-720-calcium-hardness-handheld-colorimeter-checker®hc","title":"Hanna Instruments-720 Calcium Hardness Handheld Colorimeter - Checker HC","description":"\u003cp\u003eThe Hanna Instruments-720 Calcium Hardness Checker is a simple, accurate and cost effective way to measure low ranges of copper in water.\u003c\/p\u003e\n\u003cp\u003eChecker®HC is supplied with reagents for 25 tests. Use code Hanna Instruments-720-25 (25 tests) for future purchases.\u003c\/p\u003e\n\u003cp\u003eThe Hanna Instruments-720 Calcium Hardness Checker is a simple, accurate and cost effective way to measure low ranges of copper in water.\u003c\/p\u003e\n\u003cp\u003eDesigned as a more accurate alternative to chemical test kits, the Hanna Instruments-720 provides quick, accurate results in four easy steps.\u003c\/p\u003e\n\u003cp\u003eHanna Instruments-720 uses an adaptation of the standard methods for the Examination of Water and Wastewater, 18th edition, Calmagite method. The reaction between calcium and the reagents cause a reddish-violet tint in the sample.\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003ch3\u003eIdeal for\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eWater purification systems\u003c\/li\u003e\n\u003cli\u003eHeating and cooling systems\u003c\/li\u003e\n\u003cli\u003eDrinking water\u003c\/li\u003e\n\u003cli\u003eWastewater\u003c\/li\u003e\n\u003cli\u003ePlating\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003ch3\u003eKey features\u003c\/h3\u003e\n\u003ch3\u003e\u003cstrong\u003eSmall palm-sized design\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eAccurate from ± 0.20 ppm ±5% of reading\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul\u003e\n\u003cli\u003eDedicated to a single parameter\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul\u003e\n\u003cli\u003eAuto power off after 10 minutes of inactivity\u003c\/li\u003e\n\u003cli\u003eBuilt-in timer for timed reaction readings\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003ch3\u003eOrder Information\u003c\/h3\u003e\n\u003ch3\u003eThe Hanna Instruments-720 Calcium Hardness Checker is supplied with sample cuvettes with caps (2), calcium hardness reagent starter kit x 25 (re-ordering information Hanna Instruments-720-25 x 25 tests), syringes with tips (2), plastic beaker, battery, instructions and quick start guide.\u003c\/h3\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003eAlso available: Calibration set Hanna Instruments-720-11.\u003c\/p\u003e","brand":"Hanna Instruments","offers":[{"title":"Default Title","offer_id":40354486452375,"sku":"HI-720","price":79.42,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0574\/5511\/6439\/files\/1_8eb01646-8461-434c-90a9-cfc0c9abe132.jpg?v=1728567735"},{"product_id":"hanna-instruments-711-total-chlorine-handheld-colorimeter-checker®hc","title":"Hanna Instruments-711 Total Chlorine Handheld Colorimeter - Checker®HC","description":"\u003cp\u003eIdeal for swimming pools, spas and aquariums.\u003c\/p\u003e\n\u003cp\u003eChlorine is the most common water disinfectant. Once in water, it presents as free chlorine and total chlorine.\u003c\/p\u003e\n\u003cp\u003eChecker®HC is supplied with reagents for 6 tests. Use code Hanna Instruments-711-25 (25 tests) for future purchases.\u003c\/p\u003e\n\u003cdiv class=\"row\"\u003e\n\u003cdiv id=\"description\" class=\"section-row section 1\"\u003e\n\u003cdiv class=\"section-text col-xs-12 rem-p-l rem-p-r\"\u003e\n\u003ch3\u003eIdeal for swimming pools, spas and aquariums\u003c\/h3\u003e\n\u003cp\u003eChlorine is the most common water disinfectant. Once in water, it presents as free chlorine and total chlorine.\u003c\/p\u003e\n\u003cp\u003eFree chlorine is the chlorine that is available in the water to tackle bacteria. As the process of disinfection takes place, the levels of free chlorine will reduce. Total chlorine is the measurement of free and used chlorine in the water.\u003c\/p\u003e\n\u003cp\u003eIf the total chlorine is high but the free chlorine is low or non-existent, then there is insufficient chlorine in the water to deal with the levels of contamination.\u003c\/p\u003e\n\u003cp\u003eFree chlorine is the most frequently tested of the two chemicals. By checking for the two as part of a rigorous testing procedure, adjustments in chlorine levels can be made quickly and easily and a high level of disinfection can be easily maintained.\u003c\/p\u003e\n\u003cp\u003eCan also be used to determine chlorine levels in fish tanks for optimum fish and plant health. Use alongside recommended dechlorinators.\u003c\/p\u003e\n\u003ch3\u003eIdeal for\u003c\/h3\u003e\n\u003cul\u003e\n\u003cul\u003e\n\u003cul\u003e\n\u003cli\u003eSwimming pools and spas\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/ul\u003e\n\u003c\/ul\u003e\n\u003cul\u003e\n\u003cul\u003e\n\u003cul\u003e\n\u003cli\u003eWater and quality control checks\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/ul\u003e\n\u003c\/ul\u003e\n\u003cul\u003e\n\u003cul\u003e\n\u003cul\u003e\n\u003cli\u003eDisinfection\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/ul\u003e\n\u003c\/ul\u003e\n\u003cul\u003e\n\u003cul\u003e\n\u003cul\u003e\n\u003cli\u003eWaste water treatment\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/ul\u003e\n\u003c\/ul\u003e\n\u003cul\u003e\n\u003cul\u003e\n\u003cul\u003e\n\u003cli\u003eAquaculture\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/ul\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"row\"\u003e\n\u003cdiv class=\"section-row section four\"\u003e\n\u003cdiv class=\"section-text col-xs-12 col-sm-7 add-p-r rem-p-l\"\u003e\n\u003ch3\u003eMain Benefits\u003c\/h3\u003e\n\u003cul\u003e\n\u003cul\u003e\n\u003cli\u003eTesting is quick and easy\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/ul\u003e\n\u003cul\u003e\n\u003cul\u003e\n\u003cli\u003eHigh precision results - more accurate than chemical test kits\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/ul\u003e\n\u003cul\u003e\n\u003cul\u003e\n\u003cli\u003eAuto shut-off feature means the Checker cannot be left on by mistake\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/ul\u003e\n\u003cul\u003e\n\u003cul\u003e\n\u003cli\u003eFully portable, fitting easily into both palm and pocket\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eSupplied with\u003c\/h3\u003e\n\u003cul\u003e\n\u003cul\u003e\n\u003cli\u003e2 sample cuvettes\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/ul\u003e\n\u003cul\u003e\n\u003cul\u003e\n\u003cli\u003eCuvette cap\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/ul\u003e\n\u003cul\u003e\n\u003cul\u003e\n\u003cli\u003eStarter pack of reagents x 6 (re-ordering information: Hanna Instruments-711-25 x 25 tests)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/ul\u003e\n\u003cul\u003e\n\u003cul\u003e\n\u003cli\u003e1 x 1.5 AAA battery\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/ul\u003e\n\u003cul\u003e\n\u003cul\u003e\n\u003cli\u003eInstructions\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/ul\u003e\n\u003cp\u003eAlso available: Calibration set Hanna Instruments-711-11\u003cbr\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cbr\u003e\n\u003c\/div\u003e","brand":"Hanna Instruments","offers":[{"title":"HI-711","offer_id":56408857051509,"sku":"HI-711","price":71.35,"currency_code":"GBP","in_stock":true},{"title":"HI-711-EXPIRED 09\/25","offer_id":56408857084277,"sku":"HI-712-EXPIRED","price":30.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0574\/5511\/6439\/files\/1_87a1c325-1af2-45ad-9481-2cb1b4a23bbe.jpg?v=1730902827"},{"product_id":"hanna-instruments-hi-707-nitrite-low-range-handheld-colorimeter-checker-hc","title":"Hanna Instruments HI-707 Nitrite Low Range Handheld Colorimeter - CheckerHC","description":"\u003cp\u003eMeasuring 0 to 600 ppb NO2-N. Suitable for use in all types of aquaculture (marine, salt and fresh water), nitrite can lead to tissue damage, illness and death in aquatic life, so regular checks can help aquarists to identify rising nitrite levels before fish begin to suffer. Uses an adaptation of the EPA Diazotization method 354.1.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eKey features\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eSmall palm-sized design\u003c\/p\u003e\n\u003cp\u003eAccurate from ±20 ppb ± 5% of reading\u003c\/p\u003e\n\u003cp\u003eDedicated to a single parameter\u003c\/p\u003e\n\u003cp\u003eUses a single AAA battery\u003c\/p\u003e\n\u003cp\u003eAuto Power Off after 10 minutes inactivity\u003c\/p\u003e\n\u003cp\u003eBuilt-in timer for timed reaction readings\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eSupplied with\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e2 cuvettes and caps\u003c\/p\u003e\n\u003cp\u003eReagent starter kit (6 packets of nitrite LR reagent) - re-ordering information: HI-707-25\u003c\/p\u003e\n\u003cp\u003e1 x 1.5V AAA battery\u003c\/p\u003e\n\u003cp\u003eInstruction manual\u003c\/p\u003e\n\u003cp\u003eSku:HI-707\u003c\/p\u003e","brand":"Hanna Instruments","offers":[{"title":"Default Title","offer_id":41124123672727,"sku":"HI-707","price":71.35,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0574\/5511\/6439\/products\/hanna_instruments_hi_707_nitrite_low_range_handheld_colorimeter_checker_hc.jpg?v=1634130970"},{"product_id":"hanna-instruments-hi-708-nitrite-high-range-handheld-colorimeter-checker-hc","title":"Hanna Instruments HI-708 Nitrite High Range Handheld Colorimeter - Checker HC","description":"\u003cp\u003eMeasuring 0 to 150 ppm NO2-N using an adaptation of the ferrous sulphate method. This checker is useful for initial measurements of nitrite when trying to establish good ammonia\/nitrite\/nitrate control. Suitable for all types of aquaculture (marine, salt and fresh water), the ultimate aim is to decrease nitrite levels so the low range or ultra-low nitrite Checker can be used for optimum tank health.\u003c\/p\u003e\n\u003cp\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFeatures:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eSmall palm-sized design\u003c\/p\u003e\n\u003cp\u003eAccurate from ±3 ppm ±5% of reading\u003c\/p\u003e\n\u003cp\u003eDedicated to a single parameter\u003c\/p\u003e\n\u003cp\u003eUses a single AAA battery\u003c\/p\u003e\n\u003cp\u003eAuto Power Off after 10 minutes in inactivity\u003c\/p\u003e\n\u003cp\u003eBuilt-in timer for timed reaction readings\u003c\/p\u003e\n\u003cp\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eThe HI-708 Checker is supplied with:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e2 cuvettes and caps\u003c\/p\u003e\n\u003cp\u003ereagent starter kit (6 packets of reagent) - re-ordering information HI-708-25\u003c\/p\u003e\n\u003cp\u003e1 X 1.5X AAA battery\u003c\/p\u003e\n\u003cp\u003eInstruction manual\u003c\/p\u003e","brand":"Hanna Instruments","offers":[{"title":"Default Title","offer_id":41124170268823,"sku":"HI-708","price":71.35,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0574\/5511\/6439\/products\/hanna_instruments_hi_708_nitrite_high_range_handheld_colorimeter_checker_hc.jpg?v=1634131838"},{"product_id":"hanna-instruments-hi-713-phosphate-low-range-handheld-colorimeter-checker-hc","title":"Hanna Instruments HI-713 Phosphate Low Range Handheld Colorimeter - Checker HC","description":"\u003cp\u003eThe Hanna Instruments Phosphate Low Rnage Handheld Colorimeter Checker, is a compact and reliable tool designed for accurate measurement of phosphate levels in water. Ideal for water systems uch as aquaculture, wastewater treatment and freshwater systems, this colorimeter ensures precise testing to help maintain water quality. \u003c\/p\u003e\n\u003cp\u003eIts user friendly design allows you to easily analyse samples with just a few simple steps. \u003c\/p\u003e\n\u003cp\u003eLightweight and portable, this handheld colorimeter is perfect for fieldwork and laboratory use, making it an essential tool for professionals and enhusiasts alike. \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eChecker range: 0.00 to 2.50 ppm.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eIdeal for coral reef tanks and fresh and salt water aquariums\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003ePhosphate directly inhibits calcification by corals and coralline algae - even at low levels. The health of plants in freshwater aquaria will also be impaired by raised levels of phosphate in the water. Phosphate naturally occurs as waste decomposes in coral reef, salt and fresh water aquariums. While it does not directly harm fish when levels are high, resulting green algae growth can deplete the oxygen levels in water. Corals can lose their colour due to the effects of brown algae.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eThe optimum phosphate level - particularly for reef tanks - is often quoted as zero or 0.05 mg\/L (ppm).\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eWith its ability to register the presence of phosphate in salt and fresh water at extremely low levels, the new Hanna Phosphate Checker offers a real 'must-have' addition to the fish lover's equipment chest.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eMain Benefits\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eTesting is quick and easy\u003c\/p\u003e\n\u003cp\u003eHigh precision results - more accurate than chemical test kits\u003c\/p\u003e\n\u003cp\u003eAuto shut-off feature means the Checker cannot be left on by mistake\u003c\/p\u003e\n\u003cp\u003eFully portable, fitting easily into both palm and pocket\u003c\/p\u003e\n\u003cp\u003eFits nicely into your palm or pocket\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eSupplied with\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e2 sample cuvettes\u003c\/p\u003e\n\u003cp\u003eCuvette cap\u003c\/p\u003e\n\u003cp\u003eStarter pack of reagents x 6 (re-ordering information HI-713-25 x 25 tests)\u003c\/p\u003e\n\u003cp\u003e1 x 1.5 AAA battery\u003c\/p\u003e\n\u003cp\u003eInstructions\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/testallwater.co.uk\/collections\/hanna-reagents\/products\/hanna-instruments-713-25-reagents-for-hanna-instruments-713-phosphate-pocket-checker-x-25-tests\" target=\"_blank\"\u003eReplacement Reagents For HI-713\u003c\/a\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eSku: HI-713\u003c\/p\u003e","brand":"Hanna Instruments","offers":[{"title":"Default Title","offer_id":41124241014935,"sku":"HI-713","price":71.35,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0574\/5511\/6439\/files\/3_2c87e937-ccf3-4e8b-b95d-f49d513e0c74.jpg?v=1733304963"},{"product_id":"hanna-instruments-hi-736-phosphorus-marine-ultra-low-range-colorimeter-checker-hc","title":"Hanna Instruments HI-736 Phosphorus Marine Ultra-Low Range Colorimeter - Checker HC","description":"\u003cp\u003eIdeal for use with coral reef tanks and salt water aquariums. While tiny amounts of phosphorus are needed to sustain life in the tank, more phosphorus (as\u003c\/p\u003e\n\u003cp\u003ephosphate) is introduced through feed, decaying plants, animal waste, and even tap water. Too much can deplete oxygen levels, encourage growth of unwanted algae types and inhibit\u003c\/p\u003e\n\u003cp\u003ethe calcification by corals and coralline algaes.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eChecker range:\u003c\/strong\u003e 0 to 200 ppb.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eMain Benefits\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eTesting is quick and easy\u003c\/p\u003e\n\u003cp\u003eHigh precision results - more accurate than chemical test kits\u003c\/p\u003e\n\u003cp\u003eAuto shut-off feature means the Checker cannot be left on by mistake\u003c\/p\u003e\n\u003cp\u003eFully portable, fitting easily into both palm and pocket\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eSupplied with\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e2 sample cuvettes\u003c\/p\u003e\n\u003cp\u003eCuvette cap\u003c\/p\u003e\n\u003cp\u003eStarter pack of reagents x 6 tests (re-ordering information: HI-736-25 x 25 tests)\u003c\/p\u003e\n\u003cp\u003e1 x 1.5 AAA battery\u003c\/p\u003e\n\u003cp\u003eInstructions\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/testallwater.co.uk\/collections\/hanna-reagents\/products\/hanna-instruments-hi-736-25-reagents-for-hi-736-ulr-marine-phosphorus-checker-hc\" target=\"_blank\" rel=\"noopener noreferrer\"\u003eReplacement Reagents For HI-736\u003c\/a\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eSku:HI-736\u003c\/p\u003e","brand":"Hanna Instruments","offers":[{"title":"Default Title","offer_id":41124296130711,"sku":"HI-736","price":71.35,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0574\/5511\/6439\/files\/3_e7c65e32-0890-4680-81b6-2d1acf1ce4a2.jpg?v=1733409007"},{"product_id":"hanna-instruments-hi-7754-alkalinity-checker","title":"Hanna Instruments HI-7754 Alkalinity Checker","description":"\u003cp\u003eAlkalinity is the buffering capacity of water to ensure stability of the pH value. If the alkalinity is too High, then adding acid or base has little to no elect on the pH value. If the alkalinity is too low, the smallest of acid or base will cause extreme pH changes. \u003c\/p\u003e\n\u003cp\u003eThe recommend value is 80 to 120mg\/l CaCO3, the HI-7754 offers a simple, accurate and economical way to measure this. \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eSupplied with \u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eX 2 Cuvettes with Cap\u003c\/p\u003e\n\u003cp\u003eReagents\u003c\/p\u003e\n\u003cp\u003eBattery in hard case\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eSpecifications\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eRange: 10 to 300 mg\/l\u003c\/p\u003e\n\u003cp\u003eResolution: 1mg\/l\u003c\/p\u003e\n\u003cp\u003eAccuracy: ±5mg\/l, ±5% value\u003c\/p\u003e\n\u003cp\u003eMethod: Colorimetric\u003c\/p\u003e\n\u003cp\u003eBattery: 1.5 v AAA\u003c\/p\u003e\n\u003cp\u003eDimensions: 81.5 x 61 x 37.5 mm\u003c\/p\u003e\n\u003cp\u003eSku:HI-7754\u003c\/p\u003e","brand":"Hanna Instruments","offers":[{"title":"HI-7754","offer_id":55156126810485,"sku":"HI-7754","price":71.35,"currency_code":"GBP","in_stock":true},{"title":"HI-7754-reagents expire 03\/25","offer_id":55156126843253,"sku":"HI-7754-reagents expire 03\/25","price":49.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0574\/5511\/6439\/products\/117907_4f486b8e-83ae-4b60-a79d-3a4ae540fee80.jpg?v=1660217842"},{"product_id":"hanna-instruments-hi-7014-free-chlorine-checker","title":"Hanna Instruments HI-7014 Free Chlorine Checker","description":"\u003cp\u003eThe presence of free chlorine, in combination with correct pH value ensures that bathing water is clear and disinfected. The concentration of free chlorine in swimming pool water should be measured regularly. The HI-7014 bridges the gap between simple chemical test kits and professional instruments. This checker is approved DPD method. \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eSupplied with \u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eX 2 Cuvettes with Cap\u003c\/p\u003e\n\u003cp\u003eReagents\u003c\/p\u003e\n\u003cp\u003eBattery in hard case\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eSpecifications\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eRange: 0.06 to 2.50 mg\/l \u003c\/p\u003e\n\u003cp\u003eResolution: 0.01 mg\/l \u003c\/p\u003e\n\u003cp\u003eAccuracy: ±0.03 mg\/l, ±3% value\u003c\/p\u003e\n\u003cp\u003eMethod: DPD 330.5\u003c\/p\u003e\n\u003cp\u003eBattery: 1.5 v AAA\u003c\/p\u003e\n\u003cp\u003eDimensions: 81.5 x 61 x 37.5 mm\u003c\/p\u003e\n\u003cp\u003eSku: HI-7014\u003c\/p\u003e","brand":"Hanna Instruments","offers":[{"title":"Default Title","offer_id":42419267240194,"sku":"HI-7014","price":71.35,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0574\/5511\/6439\/files\/1_051a7aa0-a852-4b7c-b579-5639198d5e42.png?v=1778657778"},{"product_id":"hanna-instruments-hi-7024-copper-checker","title":"Hanna Instruments HI-7024 Copper Checker","description":"\u003cp\u003eIf the concentration of free copper is too high in bathing, blond hair can turn green. The maximum concentration of free copper in a bath is 0.8 mg\/l. The HI-7024 is a simple, accurate and affordable way to measure copper values. This checker uses an adaption of the EPA method. \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eSupplied with \u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eX 2 Cuvettes with Cap\u003c\/p\u003e\n\u003cp\u003eReagents\u003c\/p\u003e\n\u003cp\u003eBattery in hard case\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eSpecifications\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eRange: 0.06 to 5.00 mg\/l \u003c\/p\u003e\n\u003cp\u003eResolution: 0.01 mg\/l \u003c\/p\u003e\n\u003cp\u003eAccuracy: ± 0.05 mg\/l, ±5 % value \u003c\/p\u003e\n\u003cp\u003eMethod: Colorimetric \u003c\/p\u003e\n\u003cp\u003eBattery: 1.5 V AAA\u003c\/p\u003e\n\u003cp\u003eDimensions: 81.5 x 61 x 37.5 mm\u003c\/p\u003e\n\u003cp\u003eSku:HI-7024\u003c\/p\u003e","brand":"Hanna Instruments","offers":[{"title":"Default Title","offer_id":42419283362050,"sku":"HI-7024","price":71.35,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0574\/5511\/6439\/files\/1_0912fece-78b5-4964-a15b-f08554ff5e46.png?v=1778575168"},{"product_id":"hanna-instruments-hi-7214-iron-checker","title":"Hanna Instruments HI-7214 Iron Checker","description":"\u003cp\u003eToo much iron in swimming water causes brown spots, cloudiness, or brown water. The maximum concentration of iron in a bath is 0.2 mg\/l. The Hi-7214 provides a fast and accurate way to determine iron values in four easy steps. \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eSupplied with \u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eX 2 Cuvettes with Cap\u003c\/p\u003e\n\u003cp\u003eReagents\u003c\/p\u003e\n\u003cp\u003eBattery in hard case\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eSpecifications\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eRange: 0.08 – 5.00 mg\/l \u003c\/p\u003e\n\u003cp\u003eResolution: 0.01 mg\/l\u003c\/p\u003e\n\u003cp\u003eAccuracy: ±0.04 mg\/l, ±2% value\u003c\/p\u003e\n\u003cp\u003eMethod: Phenanthroline\u003c\/p\u003e\n\u003cp\u003eBattery: 1.5 V AAA\u003c\/p\u003e\n\u003cp\u003eDimensions: 81.5 x 61 x 37.5 mm\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eSku: HI-7214\u003c\/p\u003e","brand":"Hanna Instruments","offers":[{"title":"HI-7214","offer_id":56565032845685,"sku":"HI-7214","price":71.35,"currency_code":"GBP","in_stock":true},{"title":"HI-7214-EXP-11\/2025","offer_id":56565032878453,"sku":"HI-7214-11\/2025","price":49.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0574\/5511\/6439\/products\/117910_a05b4b3c-8074-45c7-bad8-b51fe1971b930.jpg?v=1660218135"},{"product_id":"hanna-instruments-hi-7134-phosphate-checker","title":"Hanna Instruments HI-7134 Phosphate Checker","description":"\u003cp\u003ePhosphates are ideal nutrients for this alga that provides green water. These substances often come from fertilizers that end up in a bath. With the HI7134 allows you to measure phosphate in a sample and affordable way. Developed as a more accurate alternative to chemical test kits, this checker provides fast results. \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eSupplied with \u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eX 2 Cuvettes with Cap\u003c\/p\u003e\n\u003cp\u003eReagents\u003c\/p\u003e\n\u003cp\u003eBattery in hard case\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/testallwater.co.uk\/collections\/hanna-reagents\/products\/hanna-instruments-hi-7134-25-phosphate-reagents-for-hi-7134\"\u003eReplacement Reagents for HI-7134\u003c\/a\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eSpecifications\u003c\/strong\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003eRange: 0.00-2.50 mg\/l\u003c\/p\u003e\n\u003cp\u003eResolution:0.01 mg\u003c\/p\u003e\n\u003cp\u003eAccuracy: ±0.04 mg\/l, 4% value\u003c\/p\u003e\n\u003cp\u003eMethod: Ascorbic Acid\u003c\/p\u003e\n\u003cp\u003eBattery: 1.5 V AAA \u003c\/p\u003e\n\u003cp\u003eDimensions: 81.5 x 61 x 37.5 mm\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eSku: HI-7134\u003c\/p\u003e","brand":"Hanna Instruments","offers":[{"title":"Default Title","offer_id":42419307118850,"sku":"HI-7134","price":71.35,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0574\/5511\/6439\/files\/3_f5aeb226-44aa-48d4-90ab-4300e9e07d4b.jpg?v=1735815721"},{"product_id":"hanna-instruments-hi-779-ph-checker","title":"Hanna Instruments HI-779 pH Checker","description":"\u003cp\u003eIntroducing a new way of measuring pH. The HI-779 is a checker photometer with which you can quickly, easily, and moreover accurately measure pH in swimming water, according to the recognized phenol red method. The checker does not have to be calibrated with buffers, as with a tester, and there is also no electrode to be stored in storage solution. \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eSupplied with \u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eX 2 Cuvettes with Cap\u003c\/p\u003e\n\u003cp\u003eReagents\u003c\/p\u003e\n\u003cp\u003eBattery in hard case\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003ca rel=\"noopener noreferrer\" href=\"https:\/\/testallwater.co.uk\/collections\/hanna-reagents\/products\/hanna-instruments-hi-779-25-ph-reagents-for-hi-779\" target=\"_blank\"\u003eReplacement Reagents for HI-779\u003c\/a\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eSpecifications \u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eRange: 6.3 to 8.6 pH\u003c\/p\u003e\n\u003cp\u003eResolution: 0.1 pH\u003c\/p\u003e\n\u003cp\u003eAccuracy: ±0.2 pH @ 25®C\u003c\/p\u003e\n\u003cp\u003eMethod: Phenol Red\u003c\/p\u003e\n\u003cp\u003eBattery: 1.5 V AAA\u003c\/p\u003e\n\u003cp\u003eDimensions: 81.5 x 61 x 37.5 mm\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eSku:HI-779\u003c\/p\u003e","brand":"Hanna Instruments","offers":[{"title":"Default Title","offer_id":42419314360578,"sku":"HI-779","price":73.82,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0574\/5511\/6439\/files\/1_5e91bc8d-a75f-4d81-a6cd-39957ebc5449.jpg?v=1749111758"},{"product_id":"hanna-instruments-772-marine-alkalinity-dkh-checker-hc","title":"Hanna Instruments-772 Marine Alkalinity (dKH) Checker HC","description":"\u003cp\u003eIdeal for salt water aquariums and coral reef tanks.\u003c\/p\u003e\n\u003cp\u003eDesigned exclusively for saltwater aquariums, the HI-772 checker offers a quick, easy and highly accurate method of measuring alkalinity in degrees of calcium hardness, commonly abbreviated as dKH.\u003c\/p\u003e\n\u003cp\u003eAlkalinity helps to maintain a stable pH, a vital factor for most aquatic life. Corals also need an adequate level of alkalinity in order to support healthy growth: if levels are too low, corals cannot precipitate and form their skeletons; if levels fluctuate too much or too quickly, growth can become impaired.\u003c\/p\u003e\n\u003cp\u003eThe more precise and stable the levels, the better the results. With regular, precise monitoring, fluctuations in levels can be quickly corrected, giving your corals the best chance of success.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eSpecifications\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eRange: 0.0 to 20.0 dKH\u003c\/p\u003e\n\u003cp\u003eResolution: 0.1 dKH\u003c\/p\u003e\n\u003cp\u003eAccuracy: ±0.3 dKH ±5% of reading\u003c\/p\u003e\n\u003cp\u003eLight Source: LED @ 610 nm\u003c\/p\u003e\n\u003cp\u003eMethod: colorimetric method\u003c\/p\u003e\n\u003cp\u003eEnvironment: 0 to 50°C; RH max 95% non-condensing\u003c\/p\u003e\n\u003cp\u003eBattery Type: (1) 1.5V AAA\u003c\/p\u003e\n\u003cp\u003eAuto-off: after ten minutes of non-use\u003c\/p\u003e\n\u003cp\u003eDimensions: 86 x 61 x 37.5 mm\u003c\/p\u003e\n\u003cp\u003eWeight: 64g\u003c\/p\u003e\n\u003cp\u003eMethod: Colorimetric method. 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":"Hanna Instruments","offers":[{"title":"Default Title","offer_id":42760812396802,"sku":"HI-772","price":71.35,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0574\/5511\/6439\/files\/2_167d991d-59d7-4a85-94e7-a451fa9f9ad3.jpg?v=1735816372"},{"product_id":"hanna-nitrate-portable-photometer-kit","title":"Hanna NITRATE PORTABLE PHOTOMETER KIT","description":"\u003cdiv id=\"product-description-short\" class=\"product__description_short\" data-mce-fragment=\"1\" itemprop=\"description\"\u003e\n\u003cp data-mce-fragment=\"1\"\u003eThe HI-97728C kit is supplied with a meter, CAL Check standards, cuvettes (2), caps (2), plastic inserts for cuvette, (2), scissors, a cuvette cleaning cloth, 1.5V AA batteries (3), instruction manual, and an instrument quality certificate.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"product-features product__features\" data-mce-fragment=\"1\"\u003e\n\u003cdiv class=\"feature\" data-mce-fragment=\"1\"\u003e\n\u003csvg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"13.987\" height=\"10.123\" viewbox=\"0 0 13.987 10.123\" data-mce-fragment=\"1\"\u003e\u003cg transform=\"translate(-305.142 -213.686)\" data-mce-fragment=\"1\"\u003e\u003cpath class=\"a\" d=\"M309.809,222a3.892,3.892,0,0,1,.262-.345q3.768-3.778,7.539-7.551a2.462,2.462,0,0,1,.289-.267.763.763,0,0,1,1.017.106.788.788,0,0,1,.043,1.025,2.512,2.512,0,0,1-.188.2l-8.273,8.275a.831.831,0,0,1-1.394-.01q-1.854-1.854-3.707-3.71a.8.8,0,0,1-.182-.915.727.727,0,0,1,.818-.43,1.16,1.16,0,0,1,.535.3c1,.985,1.989,1.983,2.979,2.98A3.938,3.938,0,0,1,309.809,222Z\" transform=\"translate(0)\" data-mce-fragment=\"1\"\u003e\u003c\/path\u003e\u003c\/g\u003e\u003c\/svg\u003e\u003cspan data-mce-fragment=\"1\"\u003e \u003c\/span\u003e\u003cspan data-mce-fragment=\"1\"\u003eNitrate Range: 0.00 to 30.0mg\/L (ppm)\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"feature\" data-mce-fragment=\"1\"\u003e\n\u003cspan data-mce-fragment=\"1\"\u003e\u003c\/span\u003e\u003cbr\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"feature\" data-mce-fragment=\"1\"\u003e\n\u003ch3\u003eAbout the photometer\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eNitrate Range: 0.00 to 30.0mg\/L (ppm)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe HI-97728 has an innovative optical system that offers superior performance in accuracy, repeatability, and the short amount of time it takes to perform a measurement. This compact, waterproof meter is extremely user friendly with a tutorial mode that walks the user graphically, step by step, in performing a measurement. The use of a backlit dot matrix LED allows the use of virtual keys which makes the operation of the meter very intuitive including selecting different methods, reviewing GLP data, recalling the last 50 measurements, and customising the meter to user preferences.\u003c\/p\u003e\n\u003cp\u003eHI-97728 is waterproof including the cuvette holder that is designed with ridges to protect the optical path from getting scratched by the cuvette and a protected battery compartment that holds three AA batteries. The compact design fits comfortable in the hand for use in the field or on a table for benchtop use. The LCD is 71 mm (2.75\") by 37 mm (1.6\") and is backlit for easy viewing under all conditions.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eAdvanced LED optical system\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eLEDs have a much higher luminous efficiency, providing more light while using less power. They also produce little heat which could otherwise affect electronic stability.\u003c\/p\u003e\n\u003cp\u003e \u003cstrong\u003eCAL Check\u003csup\u003eTM\u003c\/sup\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eValidate the performance of the instrument at any time and apply a user calibration using CAL Check cuvettes made with NIST traceable standards.\u003c\/p\u003e\n\u003cp\u003eThe CAL Check screen guides the user step-by-step through the validation process and user calibration.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003eAuto logging\u003c\/h3\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003eGLP\u003c\/h3\u003e\n\u003cp\u003eReview of the last calibration date.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003eOn-screen tutorial mode with animations\u003c\/h3\u003e\n\u003cp\u003eThe built in tutorial mode guides users step-by-step through the measurement process.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003eWaterproof and floating IP67 case\u003c\/h3\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003eAuto-shut off\u003c\/h3\u003e\n\u003cp\u003eAutomatic shut off after 15 minutes of inactivity and 30 minutes before a read measurement.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003eBattery status indicator\u003c\/h3\u003e\n\u003cp\u003eIndicates the amount of battery life left.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003eBuilt-in timer\u003c\/h3\u003e\n\u003cp\u003eDisplay of time remaining before a measurement is taken. Ensures that all readings are taken at the appropriate reaction intervals for the test being performed.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003eError messages\u003c\/h3\u003e\n\u003cp\u003eMessages on display alerting to problems including no cap, high zero, and standard too low.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003eUnits of measurement\u003c\/h3\u003e\n\u003cp\u003eAppropriate unit of measure is displayed along with reading.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003e\u003cspan\u003eAbout Nitrates\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp\u003eNitrogen is abundant in the earth’s atmosphere and is present in water in the form of nitrate, nitrite, and ammonia. Plants use nitrogen as a nutrient to build proteins by tracking it in through their root system. Nitrate is formed in water mainly through rainfall, decomposition of organic matter, and runoff from manmade pollutants such as sewage waste and fertilisers. Almost all surface waters have a measurable level of nitrate, and a moderate amount is considered beneficial. Large amounts of nitrate, however, can lead to eutrophication which may result in decreased levels of dissolved oxygen in the water.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Hanna Instruments","offers":[{"title":"Default Title","offer_id":43005218849026,"sku":"HI-97728C","price":736.54,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0574\/5511\/6439\/products\/hi-97728c-nitrate-portable-photometer-kit.jpg?v=1658247595"},{"product_id":"hanna-instruments-hi-97710-ph-free-total-chlorine-photometer","title":"Hanna Instruments HI-97710 pH, Free \u0026 Total Chlorine Photometer","description":"\u003cp\u003eHI-97710 is an advanced portable photometer for the measurement of pH, free chlorine, and total chlorine in water. \u003cbr data-mce-fragment=\"1\"\u003e\u003cbr data-mce-fragment=\"1\"\u003e\u003c\/p\u003e\n\u003cp\u003eThis meter offers a superior optical system that utilises a reference detector and narrow band interference filters for extremely fast and repeatable measurements.\u003cbr\u003e\u003cbr\u003eNo warm up time before taking a measurement\u003cbr\u003eTutorial mode for step-by-step instructions\u003cbr\u003eUses either powder or cost saving liquid reagents\u003cbr\u003eCAL Check\u003cbr\u003eThe HI-97710 has an innovative optical system that offers superior performance in accuracy, repeatability, and the short amount of time it takes to perform a measurement.\u003cbr\u003e\u003cbr\u003eThis compact, waterproof meter is extremely user friendly with a tutorial mode that walks the user graphically, step by step, in performing a measurement.\u003cbr\u003e\u003cbr\u003eThe use of a backlit dot matrix LED allows the use of virtual keys which makes the operation of the meter very intuitive including selecting different method\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eOrdering Information: \u003c\/strong\u003e HI-97710 is supplied with cuvettes (2), caps (2), plastic inserts for cuvettes (2), 1.5V AA batteries (3), instruction manual, and instrument quality certificate\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eReagents sold separately\u003c\/strong\u003e\u003cbr\u003e\u003c\/p\u003e","brand":"Hanna Instruments","offers":[{"title":"Default Title","offer_id":43245668598018,"sku":"HI-97710","price":502.46,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0574\/5511\/6439\/products\/hi-97710-ph-free-total-chlorine-photometer_11ccf3cf-6611-42bc-95e6-257b49de0efb.jpg?v=1663933668"},{"product_id":"hanna-instruments-hi-97734-free-total-chlorine-high-range-portable-photometer","title":"Hanna Instruments HI-97734 Free \u0026 total Chlorine High Range portable photometer","description":"\u003cdiv id=\"product-description-short\" class=\"product__description_short\" itemprop=\"description\"\u003e\n\u003cp\u003eHI-97734 is an advanced portable photometer for the measurement of HR free and total chlorine in water. \u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"product-features product__features\"\u003e\n\u003cdiv class=\"feature\"\u003e\n\u003csvg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"13.987\" height=\"10.123\" viewbox=\"0 0 13.987 10.123\"\u003e\u003cg transform=\"translate(-305.142 -213.686)\"\u003e\u003cpath class=\"a\" d=\"M309.809,222a3.892,3.892,0,0,1,.262-.345q3.768-3.778,7.539-7.551a2.462,2.462,0,0,1,.289-.267.763.763,0,0,1,1.017.106.788.788,0,0,1,.043,1.025,2.512,2.512,0,0,1-.188.2l-8.273,8.275a.831.831,0,0,1-1.394-.01q-1.854-1.854-3.707-3.71a.8.8,0,0,1-.182-.915.727.727,0,0,1,.818-.43,1.16,1.16,0,0,1,.535.3c1,.985,1.989,1.983,2.979,2.98A3.938,3.938,0,0,1,309.809,222Z\" transform=\"translate(0)\"\u003e\u003c\/path\u003e\u003c\/g\u003e\u003c\/svg\u003e\u003cspan\u003e \u003c\/span\u003e\u003cspan\u003eChlorine\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"feature\"\u003e\n\u003csvg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"13.987\" height=\"10.123\" viewbox=\"0 0 13.987 10.123\"\u003e\u003cg transform=\"translate(-305.142 -213.686)\"\u003e\u003cpath class=\"a\" d=\"M309.809,222a3.892,3.892,0,0,1,.262-.345q3.768-3.778,7.539-7.551a2.462,2.462,0,0,1,.289-.267.763.763,0,0,1,1.017.106.788.788,0,0,1,.043,1.025,2.512,2.512,0,0,1-.188.2l-8.273,8.275a.831.831,0,0,1-1.394-.01q-1.854-1.854-3.707-3.71a.8.8,0,0,1-.182-.915.727.727,0,0,1,.818-.43,1.16,1.16,0,0,1,.535.3c1,.985,1.989,1.983,2.979,2.98A3.938,3.938,0,0,1,309.809,222Z\" transform=\"translate(0)\"\u003e\u003c\/path\u003e\u003c\/g\u003e\u003c\/svg\u003e\u003cspan\u003e \u003c\/span\u003e\u003cspan\u003eAdvanced Optical System\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"feature\"\u003e\n\u003cspan\u003e\u003c\/span\u003e\u003cbr\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"feature\"\u003e\n\u003cp\u003eHI-97734 is an advanced portable photometer for the measurement of HR free and total chlorine in water.\u003c\/p\u003e\n\u003cp\u003eThis meter offers a superior optical system that utilises a reference detector and narrow band interference filters for extremely fast and repeatable measurements.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eThe HI-97734 meter measures free and total chlorine (Cl\u003csub\u003e2\u003c\/sub\u003e) in water samples\u003c\/li\u003e\n\u003cli\u003eNo warm up time before taking a measurement\u003c\/li\u003e\n\u003cli\u003eTutorial mode for step-by-step instructions\u003c\/li\u003e\n\u003cli\u003eUses either powder or cost saving liquid reagents\u003c\/li\u003e\n\u003cli\u003eCAL Check\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eFree Chlorine Range\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003ctd\u003e0.00 to 10.00 mg\/L (as Cl\u003csub\u003e2\u003c\/sub\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFree Chlorine Resolution\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003ctd\u003e0.01 mg\/L\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFree Chlorine Accuracy\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003ctd\u003e±0.03 mg\/L ±3% of reading\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTotal Chlorine Range UHR\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003ctd\u003e0.00 to 10 mg\/L (as Cl\u003csub\u003e2\u003c\/sub\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003etotal Chlorine Resolution\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003ctd\u003e1 mg\/L\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTotal Chlorine Accuracy\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003ctd\u003e±0.03 mg\/L ±3% of reading\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eChlorine Method\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003ctd\u003eAdaptation of EPA DPD method 330.5\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\u003ePhotometer\/Colorimeter Light Source\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003ctd\u003eLight emitting diode\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 with narrow band interference filter @ 420 nm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBandpass Filter Bandwidth\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003ctd\u003e8 nm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBandpass Filter Wavelength Accuracy\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003ctd\u003e±1.0 nm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCuvette Type\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003ctd\u003eround, 24.6 mm diameter (22 mm inside)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eGLP\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003ctd\u003eDate, time of last calibration\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDisplay\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003ctd\u003e128 x 64 pixel B\/W LCD with backlight\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLogging Type\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003ctd\u003eautomatic logging\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLogging Memory\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003ctd\u003e50 measurement\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 AA battery (3 pcs.) \/ \u0026gt; 800 measurements (without backlight)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAutomatic Shut-Off\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003ctd\u003eAfter 15 minutes of inactivity (30 minutes before a READ measurement)\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); relative humidity: 100% (IP 67, floating case)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003ctd\u003e380g with batteries\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003ctd\u003e142.5 x 102.5 x 50.5 mm\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-97734 is supplied with cuvettes (2), caps (2), plastic inserts for cuvettes (2), 1.5V AA batteries (3), instruction manual, and instrument quality certificate.\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\u003e Interference may be caused by:\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003ctd\u003eAlkalinity: above 1,000 mg\/L CaCO\u003csub\u003e3\u003c\/sub\u003e\u003cspan\u003e \u003c\/span\u003eif present as bicarbonate (HCO\u003csub\u003e3\u003cspan\u003e \u003c\/span\u003e\u003c\/sub\u003esample pH \u0026lt; 8.3); above 25 mg\/L CaCO\u003csub\u003e3\u003c\/sub\u003e\u003cspan\u003e \u003c\/span\u003eif present as carbonate (CO\u003csub\u003e3\u003c\/sub\u003e\u003csup\u003e2\u003c\/sup\u003e, sample pH \u0026gt; 9.0). In both cases, it will not reliably develop the full amount of colour or it may rapidly fade (negative error). To resolve this, neutralise the sample with diluted HCl. Acidity: above 150 mg\/L CaCO\u003csub\u003e3\u003c\/sub\u003e. May not reliably develop the full amount of colour or it may rapidly fade (negative error). To resolve this, neutralise the sample with diluted NaOH. Hardness: 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. Bromine (Br\u003csub\u003e2\u003c\/sub\u003e), Chloride dioxide (ClO\u003csub\u003e2\u003c\/sub\u003e), Iodine (I\u003csub\u003e2\u003c\/sub\u003e), Oxidised Manganese and Chromium, Ozone (O\u003csub\u003e3\u003c\/sub\u003e): positive error.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Hanna Instruments","offers":[{"title":"Default Title","offer_id":56324377969013,"sku":"HI-97734","price":502.46,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0574\/5511\/6439\/files\/hi-97734-free-total-chlorine-high-range-portable-photometer.jpg?v=1762938856"},{"product_id":"hanna-instruments-hi-97710c-ph-free-total-chlorine-portable-photometer-kit","title":"Hanna Instruments HI-97710C pH, Free \u0026 Total Chlorine Portable Photometer Kit","description":"\u003cdiv id=\"product-description-short\" class=\"product__description_short\" itemprop=\"description\"\u003e\n\u003cp\u003eThe HI-97710C kit is supplied with a meter, CAL Check standards, cuvettes (2), caps (2), plastic inserts for cuvettes (2), scissors, a cuvette cleaning cloth, 1.5V AA batteries (3), instruction manual, and an instrument quality certificate.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"product-features product__features\"\u003e\n\u003cdiv class=\"feature\"\u003e\n\u003csvg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"13.987\" height=\"10.123\" viewbox=\"0 0 13.987 10.123\"\u003e\u003cg transform=\"translate(-305.142 -213.686)\"\u003e\u003cpath class=\"a\" d=\"M309.809,222a3.892,3.892,0,0,1,.262-.345q3.768-3.778,7.539-7.551a2.462,2.462,0,0,1,.289-.267.763.763,0,0,1,1.017.106.788.788,0,0,1,.043,1.025,2.512,2.512,0,0,1-.188.2l-8.273,8.275a.831.831,0,0,1-1.394-.01q-1.854-1.854-3.707-3.71a.8.8,0,0,1-.182-.915.727.727,0,0,1,.818-.43,1.16,1.16,0,0,1,.535.3c1,.985,1.989,1.983,2.979,2.98A3.938,3.938,0,0,1,309.809,222Z\" transform=\"translate(0)\"\u003e\u003c\/path\u003e\u003c\/g\u003e\u003c\/svg\u003e\u003cspan\u003e \u003c\/span\u003e\u003cspan\u003epH\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"feature\"\u003e\n\u003csvg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"13.987\" height=\"10.123\" viewbox=\"0 0 13.987 10.123\"\u003e\u003cg transform=\"translate(-305.142 -213.686)\"\u003e\u003cpath class=\"a\" d=\"M309.809,222a3.892,3.892,0,0,1,.262-.345q3.768-3.778,7.539-7.551a2.462,2.462,0,0,1,.289-.267.763.763,0,0,1,1.017.106.788.788,0,0,1,.043,1.025,2.512,2.512,0,0,1-.188.2l-8.273,8.275a.831.831,0,0,1-1.394-.01q-1.854-1.854-3.707-3.71a.8.8,0,0,1-.182-.915.727.727,0,0,1,.818-.43,1.16,1.16,0,0,1,.535.3c1,.985,1.989,1.983,2.979,2.98A3.938,3.938,0,0,1,309.809,222Z\" transform=\"translate(0)\"\u003e\u003c\/path\u003e\u003c\/g\u003e\u003c\/svg\u003e\u003cspan\u003e \u003c\/span\u003e\u003cspan\u003eChlorine\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"feature\"\u003e\n\u003cspan\u003e\u003c\/span\u003e\u003cbr\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"feature\"\u003e\n\u003ch3\u003eAbout the HI-97710 Photometer\u003c\/h3\u003e\n\u003cp\u003eHI-97710 is an advanced portable photometer for the measurement of pH, free chlorine, and total chlorine in water. This meter offers a superior optical system that utilises a reference detector and narrow band interference filters for extremely fast and repeatable measurements.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eNo warm up time before taking a measurement\u003c\/li\u003e\n\u003cli\u003eTutorial mode for step-by-step instructions\u003c\/li\u003e\n\u003cli\u003eUses either powder or cost saving liquid reagents\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eThe HI-97710 has an innovative optical system that offers superior performance in accuracy, repeatability, and the short amount of time it takes to perform a measurement. This compact, waterproof meter is extremely user friendly with a tutorial mode that walks the user graphically, step by step, in performing a measurement. The use of a backlit dot matrix LED allows the use of virtual keys which makes the operation of the meter very intuitive including selecting different methods, reviewing GLP data, recalling the last 50 measurements, and customising the meter to user preferences.\u003c\/p\u003e\n\u003cp\u003eHI-97710 is waterproof including the cuvette holder that is designed with ridges to protect the optical path from getting scratched by the cuvette and a protected battery compartment that holds three AA batteries. The compact design fits comfortable in the hand for use in the field or on a table for benchtop use. The LCD is 71 mm (2.75\") by 37 mm (1.6\") and is backlit for easy viewing under all conditions.\u003c\/p\u003e\n\u003ch3\u003eStable Light Source:\u003c\/h3\u003e\n\u003cp\u003eThe internal reference system of the HI-97710 photometer compensates for any drifts due to power fluctuations or ambient temperature changes. With a stable source of light the readings are fast and stable between your blank (zero) measurement and sample measurement.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003eHigh Efficiency Light Source:\u003c\/h3\u003e\n\u003cp\u003eLED light sources offer superior performance compared to tungsten lamps. LEDs have a much higher luminous efficiency, providing more light while using less power. They also produce little heat, which could otherwise affect electronic stability.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003eHigh Quality Filters:\u003c\/h3\u003e\n\u003cp\u003eImproved optical filters ensure greater wavelength accuracy and allow a brighter, stronger signal to be received. The end result is higher measurement stability and less wavelength error.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003eGreater Light Yield:\u003c\/h3\u003e\n\u003cp\u003eA focusing lens collects all of the light that exits the cuvette, eliminating errors from imperfections and scratches that may be present in the glass. The use of the convex lens reduces the need for indexing cuvettes.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003eCAL Check Functionality:\u003c\/h3\u003e\n\u003cp\u003eHanna’s exclusive CAL Check feature allows for performance verification and calibration of the meter using NIST traceable standards. Our CAL Check standard vials are developed to simulate a specific absorbance value at each wavelength to verify the accuracy of subsequent readings.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003eMultiple Measurement Methods:\u003c\/h3\u003e\n\u003cp\u003eUsers can select the use of powder reagents supplied in packets or the use of low cost liquid reagents supplied in a dropper bottle.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003eBuilt-in Reaction Timer:\u003c\/h3\u003e\n\u003cp\u003eWaiting the proper reaction time is of key importance when performing colorimetric measurements. The countdown timer displays the time remaining until a measurement will be taken, ensuring consistent results between sample measurements and users.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003eLarge Cuvette Size:\u003c\/h3\u003e\n\u003cp\u003eThe sample cell of the HI-97710 fits a round, glass cuvette with a 25 mm path length. The relatively long path length of the sample cuvette allows the light to pass through more of the sample solution, ensuring accurate measurements even in low absorbance samples.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003eIntuitive Dot Matrix Display:\u003c\/h3\u003e\n\u003cp\u003eThe HI-97710 is designed with a backlit, graphic LCD. With virtual keys, a battery status indicator, and error messages. Users will find the meter interface intuitive and easy to read. A dedicated help key provides information relating to the current meter operation, and can be used at any stage in the setup or measurement process to show contextual help.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003eAuto-off Protection:\u003c\/h3\u003e\n\u003cp\u003eThe meter uses three common AA batteries that allow for about 800 measurements to be taken. The auto-off feature automatically shuts off the meter after 15 minutes of inactivity in order conserve battery life.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003eAbout Chlorine\u003c\/h3\u003e\n\u003cp\u003eChlorine is a common chemical used by many due to is disinfection properties.\u003c\/p\u003e\n\u003cp\u003eFree chlorine can exist in two forms and which form is present is based on the pH. At pH less than 7.6, the predominate form is hypochlorous acid (HOCl), while at pH greater than 7.6, the hypochlorite (OCl-) form becomes predominate.\u003c\/p\u003e\n\u003cp\u003eThis is very important when it comes to preventing biological growth in water or keeping a swimming pool safe since hypochlorous acid is 100 times more effective as a sanitiser.\u003c\/p\u003e\n\u003cp\u003eTotal chlorine represents both the free chlorine and combined chlorine present.\u003c\/p\u003e\n\u003cp\u003eCombined chlorine is the chlorine bound to nitrogen substances such as ammonia. In swimming pools, combined chlorine is what we can smell and is irritating to the eyes. The free chlorine measurement is subtracted from the total chlorine measurement in order to know how much combined chlorine is present. HI-97710 is designed to measure pH and low levels of free and total chlorine in water up to 5.00 mg\/L (ppm).\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003eAdvanced optical system\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eLED that generates very little heat.\u003c\/li\u003e\n\u003cli\u003e8 nm narrowband interference filter that is accurate to +\/- 1 nm and offers 25% increase in light efficiency.\u003c\/li\u003e\n\u003cli\u003eReference detector that modulates the voltage to LED for consistent light output.\u003c\/li\u003e\n\u003cli\u003eA concave focusing lens that reduces errors from imperfections in the cuvette.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eSpecification\u003c\/strong\u003e\u003c\/p\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003epH Range\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003ctd\u003e6.5 to 8.5 pH\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003epH Resolution\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003ctd\u003e0.1 pH\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003epH Accuracy\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003ctd\u003e±0.1 pH @ 25°C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003epH Method\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003ctd\u003eadaptation of Phenol Red method\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\u003eFree Chlorine Range\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003ctd\u003e0.00 to 5.00 mg\/L (as Cl\u003csub\u003e2\u003c\/sub\u003e)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFree Chlorine Resolution\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003ctd\u003e0.01 mg\/L\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFree Chlorine Accuracy\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003ctd\u003e±0.03 mg\/L ±3% of reading\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTotal Chlorine Range\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003ctd\u003e0.00 to 5.00 mg\/L (as Cl\u003csub\u003e2\u003c\/sub\u003e)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTotal Chlorine Resolution\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003ctd\u003e0.01 mg\/L\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTotal Chlorine Accuracy\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003ctd\u003e±0.03 mg\/L ±3% of reading\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eChlorine Method\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003ctd\u003eadaptation of the EPA 330.5 DPD method\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\u003ePhotometer\/Colorimeter Light Source\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003ctd\u003eLight emitting diode\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 with narrow band interference filter @ 525 nm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBandpass Filter Bandwidth\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003ctd\u003e8 nm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBandpass Filter Wavelength Accuracy\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003ctd\u003e±1.0 nm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCuvette Type\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003ctd\u003eround, 24.6 mm diameter (22 mm inside)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eGLP\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003ctd\u003edate, time of last calibration\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDisplay\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003ctd\u003e128 x 64 pixel B\/W LCD with backlight\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLogging Type\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003ctd\u003eautomatic logging\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLogging Memory\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003ctd\u003e50 measurement\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 AA battery (3 pcs.) \/ \u0026gt; 800 measurements (without backlight)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAutomatic Shut-Off\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003ctd\u003eAfter 15 minutes of inactivity (30 minutes before a READ measurement)\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); relative humidity: 100% (IP 67, floating case)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003ctd\u003e380 g (13.4 oz.) with batteries\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003ctd\u003e142.5 x 102.5 x 50.5 mm (5.6 x 4.0 x 2.0\")\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\u003eKit: HI-97710C is supplied with a meter, CAL-Check standards, cuvettes (2), caps (2), plastic inserts for cuvettes (2), scissors, cuvette cleaning cloth, 1.5V AA batteries (3), instruction manual, and instrument quality certificate.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Hanna Instruments","offers":[{"title":"Default Title","offer_id":56336721510773,"sku":null,"price":707.15,"currency_code":"GBP","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0574\/5511\/6439\/files\/hi-97710c-ph-free-total-chlorine-portable-photometer-kit.jpg?v=1763076305"},{"product_id":"hanna-instruments-3833-phosphate-test-kit-copy","title":"Hanna Instruments-3833 Phosphate test kit expiry 11\/2025","description":"\u003cdiv itemprop=\"description\" id=\"product-description-short\" class=\"product__description_short\"\u003e\n\u003cp\u003ePhosphate is used in water treatment, heating systems and cooling systems as a corrosion inhibitor. It is also an essential nutrient in agriculture and horticulture which requires monitoring.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"product-features product__features\"\u003e\n\u003cdiv class=\"feature\"\u003e\n\u003csvg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"13.987\" height=\"10.123\" viewbox=\"0 0 13.987 10.123\"\u003e\u003cg transform=\"translate(-305.142 -213.686)\"\u003e\u003cpath class=\"a\" d=\"M309.809,222a3.892,3.892,0,0,1,.262-.345q3.768-3.778,7.539-7.551a2.462,2.462,0,0,1,.289-.267.763.763,0,0,1,1.017.106.788.788,0,0,1,.043,1.025,2.512,2.512,0,0,1-.188.2l-8.273,8.275a.831.831,0,0,1-1.394-.01q-1.854-1.854-3.707-3.71a.8.8,0,0,1-.182-.915.727.727,0,0,1,.818-.43,1.16,1.16,0,0,1,.535.3c1,.985,1.989,1.983,2.979,2.98A3.938,3.938,0,0,1,309.809,222Z\" transform=\"translate(0)\"\u003e\u003c\/path\u003e\u003c\/g\u003e\u003c\/svg\u003e\u003cspan\u003e \u003c\/span\u003e\u003cspan\u003eRange: 0 to 5mg\/L\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"feature\"\u003e\n\u003csvg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"13.987\" height=\"10.123\" viewbox=\"0 0 13.987 10.123\"\u003e\u003cg transform=\"translate(-305.142 -213.686)\"\u003e\u003cpath class=\"a\" d=\"M309.809,222a3.892,3.892,0,0,1,.262-.345q3.768-3.778,7.539-7.551a2.462,2.462,0,0,1,.289-.267.763.763,0,0,1,1.017.106.788.788,0,0,1,.043,1.025,2.512,2.512,0,0,1-.188.2l-8.273,8.275a.831.831,0,0,1-1.394-.01q-1.854-1.854-3.707-3.71a.8.8,0,0,1-.182-.915.727.727,0,0,1,.818-.43,1.16,1.16,0,0,1,.535.3c1,.985,1.989,1.983,2.979,2.98A3.938,3.938,0,0,1,309.809,222Z\" transform=\"translate(0)\"\u003e\u003c\/path\u003e\u003c\/g\u003e\u003c\/svg\u003e\u003cspan\u003e \u003c\/span\u003e\u003cspan\u003eColormetric Method\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"feature\"\u003e\n\u003cspan\u003e\u003c\/span\u003e\u003cbr\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"feature\"\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eMethod\u003c\/td\u003e\n\u003ctd\u003e \u003c\/td\u003e\n\u003ctd\u003eColourimetric\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRange\u003c\/td\u003e\n\u003ctd\u003e \u003c\/td\u003e\n\u003ctd\u003e0-5 mg\/L\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSmallest Increment\u003c\/td\u003e\n\u003ctd\u003e \u003c\/td\u003e\n\u003ctd\u003e1 mg\/L\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eChemical Method\u003c\/td\u003e\n\u003ctd\u003e \u003c\/td\u003e\n\u003ctd\u003eAscorbic acid\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNumber of Tests\u003c\/td\u003e\n\u003ctd\u003e \u003c\/td\u003e\n\u003ctd\u003e50\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e \u003c\/td\u003e\n\u003ctd\u003e160 g\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eOur test kits measure the strength or weakness of a chemical presence according to the degree of colour saturation. Ie – if it is pale in colour, then the chemical concentration is low. If the colour is strong, then the chemical concentration is high. Simply add the reagent to the compound to be tested and match the colour gained against a colour chart included in the kit.\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003ePhosphate test kit for irrigation water\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe orthophosphate level in mg\/L (or ppm) is determined by a Colorimetric method. Ammonium molybdate and potassium antimonyl tartrate react in acid medium with orthophosphate to form a phosphomolybdate complex that is reduced to intensely coloured molybdenum blue by ascorbic acid. The colour intensity of the solution determines the phosphate concentration. Phosphates can be classified as ortho, condensed or organically bound. As with existing test kits on the market, the HANNA Phosphate Test Kit will only determine ortho phosphate levels.\u003c\/p\u003e\n\u003cp\u003ePhosphates are widely introduced into the environment from such sources as agricultural fertilisers, cleaning and laundering products, boiler water conditioners and drinking water treatment aids. At high levels, phosphates stimulate the growth of photosynthetic organisms which may contribute to eutrophication of lakes, rivers and ponds. This makes it important to monitor and control phosphate discharges into the environment.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eOrder information\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe Hanna Instruments-3833 test kit is supplied with the following; \u003cbr\u003e20mL plastic beaker, colour comparison cube and 50 packets phosphate reagent.\u003c\/p\u003e\n\u003cp\u003eCheck out our Checker® HC Handheld Colorimeters – a highly-accurate and affordable way to test for chemicals using a gadget that sits perfectly in the palm of your hand and also fits nicely into your pocket.\u003c\/p\u003e","brand":"Hanna Instruments","offers":[{"title":"Default Title","offer_id":56848682647925,"sku":"HI-3833 11\/25","price":10.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0574\/5511\/6439\/files\/1_78450ef1-b7e7-463d-b44a-44d98a8d5aab.jpg?v=1730293746"},{"product_id":"hanna-instruments-775-freshwater-alkalinity-colorimeter-checker®hc-clearance","title":"Hanna Instruments-775 Freshwater Alkalinity Colorimeter - Checker®HC Clearance","description":"\u003cp\u003eThis instrument is fully functioning, the reagents inside expired 02\/24\u003c\/p\u003e\n\u003cp\u003eIdeal for fresh water aquariums (not suitable for salt water marine tanks).\u003c\/p\u003e\n\u003cp\u003eThe HI-775 Alkalinity Checker for fresh water is a simple, accurate and cost effective way to measure alkalinity in fresh water.\u003c\/p\u003e\n\u003cp\u003eChecker®HC is supplied with reagents for 25 tests.\u003c\/p\u003e\n\u003cp\u003eUse code HI-775-26 for future purchases.\u003c\/p\u003e\n\u003cp\u003eDesigned as a more accurate alternative to chemical test kits, it is easy to use with single button operation and a large LCD display. This mini tester also features auto shut-off to ensure a longer battery life.\u003c\/p\u003e\n\u003cp\u003eThe Hanna Instruments-775 is ideal for checking water quality, great for educational and environmental applications and for use in freshwater aquaria.\u003c\/p\u003e\n\u003cp\u003eDesigned as a more accurate alternative to chemical test kits, the Hanna Instruments-775 provides quick, accurate results in four easy steps. (See below).\u003c\/p\u003e\n\u003cp\u003eThe Hanna Instruments-775 uses a colorimetric method. The reaction causes a distinctive range of colours from yellow to blue to develop. This meter has been developed to work with fresh water samples.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003ePlease note:\u003c\/strong\u003e Any chlorine present in the sample will interfere with the reading. To remove the chlorine interference add one drop of Hanna Instruments-93755-53 Chlorine Remover to the unreacted sample prior to testing.\u003c\/p\u003e\n\u003ch3\u003eFeatures:\u003c\/h3\u003e\n\u003cul\u003e\n\u003cul\u003e\n\u003cli\u003eSmall palm-sized design\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/ul\u003e\n\u003cul\u003e\n\u003cul\u003e\n\u003cli\u003eAccurate from ±5ppm ± 5% of reading\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/ul\u003e\n\u003cul\u003e\n\u003cul\u003e\n\u003cli\u003eDedicated to a single parameter\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/ul\u003e\n\u003cul\u003e\n\u003cul\u003e\n\u003cli\u003eUses a single AAA battery\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/ul\u003e\n\u003cul\u003e\n\u003cul\u003e\n\u003cli\u003eAuto Power Off after 10 minutes in inactivity\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/ul\u003e\n\u003cul\u003e\n\u003cul\u003e\n\u003cli\u003eBuilt-in timer for timed reaction readings\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eIdeal for:\u003c\/h3\u003e\n\u003cul style=\"list-style-type: circle;\"\u003e\n\u003cli\u003eWater Quality\u003c\/li\u003e\n\u003cli\u003eEducation\u003c\/li\u003e\n\u003cli\u003eFreshwater Aquarium\u003c\/li\u003e\n\u003cli\u003eEnvironmental\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eOrder Information:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe Hanna Instruments-775 Checker®HC is supplied with 2 cuvettes and caps, alkalinity reagent kit for 25 tests (Hanna Instruments-775-26), 1 x1.5V AAA battery, and an instruction manual.\u003c\/p\u003e\n\u003cp\u003eAlso available: Hanna Instruments-775-11 Calibration set.\u003c\/p\u003e","brand":"Hanna Instruments","offers":[{"title":"Default Title","offer_id":57067352424821,"sku":"HI-775 clearance","price":59.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0574\/5511\/6439\/files\/4_c532272c-b869-48d2-a07d-e46754f8cb07.jpg?v=1730375187"},{"product_id":"hanna-instruments-hi-736-phosphorus-marine-ultra-low-range-colorimeter-checker-hc-clearance","title":"Hanna Instruments HI-736 Phosphorus Marine Ultra-Low Range Colorimeter - Checker HC Clearance","description":"\u003cp\u003eFully functioning Instrument, reagents expired 04\/24\u003c\/p\u003e\n\u003cp\u003eIdeal for use with coral reef tanks and salt water aquariums. While tiny amounts of phosphorus are needed to sustain life in the tank, more phosphorus (as\u003c\/p\u003e\n\u003cp\u003ephosphate) is introduced through feed, decaying plants, animal waste, and even tap water. Too much can deplete oxygen levels, encourage growth of unwanted algae types and inhibit\u003c\/p\u003e\n\u003cp\u003ethe calcification by corals and coralline algaes.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eChecker range:\u003c\/strong\u003e 0 to 200 ppb.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eMain Benefits\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eTesting is quick and easy\u003c\/p\u003e\n\u003cp\u003eHigh precision results - more accurate than chemical test kits\u003c\/p\u003e\n\u003cp\u003eAuto shut-off feature means the Checker cannot be left on by mistake\u003c\/p\u003e\n\u003cp\u003eFully portable, fitting easily into both palm and pocket\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eSupplied with\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e2 sample cuvettes\u003c\/p\u003e\n\u003cp\u003eCuvette cap\u003c\/p\u003e\n\u003cp\u003eStarter pack of reagents x 6 tests (re-ordering information: HI-736-25 x 25 tests)\u003c\/p\u003e\n\u003cp\u003e1 x 1.5 AAA battery\u003c\/p\u003e\n\u003cp\u003eInstructions\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/testallwater.co.uk\/collections\/hanna-reagents\/products\/hanna-instruments-hi-736-25-reagents-for-hi-736-ulr-marine-phosphorus-checker-hc\" rel=\"noopener noreferrer\" target=\"_blank\"\u003eReplacement Reagents For HI-736\u003c\/a\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eSku:HI-736\u003c\/p\u003e","brand":"Hanna Instruments","offers":[{"title":"Default Title","offer_id":57067446305141,"sku":"HI-736 expiry 04\/24","price":59.99,"currency_code":"GBP","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0574\/5511\/6439\/files\/3_e7c65e32-0890-4680-81b6-2d1acf1ce4a2.jpg?v=1733409007"},{"product_id":"hanna-instruments-hi-736-phosphorus-marine-ultra-low-range-colorimeter-checker-hc-clearance-1","title":"Hanna Instruments HI-736 Phosphorus Marine Ultra-Low Range Colorimeter - Checker HC Clearance","description":"\u003cp\u003eFully functioning Instrument, reagents expired 01\/26\u003c\/p\u003e\n\u003cp\u003eIdeal for use with coral reef tanks and salt water aquariums. While tiny amounts of phosphorus are needed to sustain life in the tank, more phosphorus (as\u003c\/p\u003e\n\u003cp\u003ephosphate) is introduced through feed, decaying plants, animal waste, and even tap water. Too much can deplete oxygen levels, encourage growth of unwanted algae types and inhibit\u003c\/p\u003e\n\u003cp\u003ethe calcification by corals and coralline algaes.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eChecker range:\u003c\/strong\u003e 0 to 200 ppb.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eMain Benefits\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eTesting is quick and easy\u003c\/p\u003e\n\u003cp\u003eHigh precision results - more accurate than chemical test kits\u003c\/p\u003e\n\u003cp\u003eAuto shut-off feature means the Checker cannot be left on by mistake\u003c\/p\u003e\n\u003cp\u003eFully portable, fitting easily into both palm and pocket\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eSupplied with\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e2 sample cuvettes\u003c\/p\u003e\n\u003cp\u003eCuvette cap\u003c\/p\u003e\n\u003cp\u003eStarter pack of reagents x 6 tests (re-ordering information: HI-736-25 x 25 tests)\u003c\/p\u003e\n\u003cp\u003e1 x 1.5 AAA battery\u003c\/p\u003e\n\u003cp\u003eInstructions\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/testallwater.co.uk\/collections\/hanna-reagents\/products\/hanna-instruments-hi-736-25-reagents-for-hi-736-ulr-marine-phosphorus-checker-hc\" rel=\"noopener noreferrer\" target=\"_blank\"\u003eReplacement Reagents For HI-736\u003c\/a\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eSku:HI-736\u003c\/p\u003e","brand":"Hanna Instruments","offers":[{"title":"Default Title","offer_id":57067621155189,"sku":"HI-736 expiry 01\/26","price":59.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0574\/5511\/6439\/files\/3_e7c65e32-0890-4680-81b6-2d1acf1ce4a2.jpg?v=1733409007"},{"product_id":"hanna-instruments-hi-7024-copper-checker-clearance","title":"Hanna Instruments HI-7024 Copper Checker Clearance","description":"\u003cp\u003eInstrument fully functioning, the reagents expired 12\/25.\u003c\/p\u003e\n\u003cp\u003eIf the concentration of free copper is too high in bathing, blond hair can turn green. The maximum concentration of free copper in a bath is 0.8 mg\/l. The HI-7024 is a simple, accurate and affordable way to measure copper values. This checker uses an adaption of the EPA method. \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eSupplied with \u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eX 2 Cuvettes with Cap\u003c\/p\u003e\n\u003cp\u003eReagents\u003c\/p\u003e\n\u003cp\u003eBattery in hard case\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eSpecifications\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eRange: 0.06 to 5.00 mg\/l \u003c\/p\u003e\n\u003cp\u003eResolution: 0.01 mg\/l \u003c\/p\u003e\n\u003cp\u003eAccuracy: ± 0.05 mg\/l, ±5 % value \u003c\/p\u003e\n\u003cp\u003eMethod: Colorimetric \u003c\/p\u003e\n\u003cp\u003eBattery: 1.5 V AAA\u003c\/p\u003e\n\u003cp\u003eDimensions: 81.5 x 61 x 37.5 mm\u003c\/p\u003e\n\u003cp\u003eSku:HI-7024\u003c\/p\u003e","brand":"Hanna Instruments","offers":[{"title":"Default Title","offer_id":57070641250677,"sku":"HI-7024 expiry 12\/25","price":59.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0574\/5511\/6439\/products\/hanna_instruments_hi_7024_copper_checker.jpg?v=1655889482"}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0574\/5511\/6439\/collections\/2_7ee0d096-bd64-419d-a3cb-d91d1a433ba0.jpg?v=1759740009","url":"https:\/\/testallwater.co.uk\/collections\/hanna-test-kits.oembed?page=2","provider":"Test All Water","version":"1.0","type":"link"}