{"product_id":"hanna-marine-hi781-low-range-nitrate-checker","title":"Hanna Marine HI781 Low Range Nitrate Checker","description":"\u003cp\u003e\u003c\/p\u003e\u003cdiv\u003e\r\n\tThe HI781 Marine Nitrate Low Range Colorimeter is designed to accurately determine low range nitrate levels in saltwater aquariums and marine applications. With a digital read out, there is no more struggling to determine colors visually. \u003c\/div\u003e\r\n\u003cdiv\u003e\r\n\t \u003c\/div\u003e\r\n\u003cdiv\u003e\r\n\tRange: 0.00 to 5.00 ppm (as NO3–) [0.0 to 50.0 ppm (calculated) using dilution]\u003c\/div\u003e\r\n\u003cdiv\u003e\r\n\tBuilt-in timer so you don't miss a step.\u003c\/div\u003e\r\n\u003cdiv\u003e\r\n\tSaltwater Compatible\u003c\/div\u003e\r\n\u003cdiv\u003e\r\n\t \u003c\/div\u003e\r\n\u003cdiv\u003e\r\n\tThe HI781 Checker®HC (Handheld Colorimeter) is a simple, accurate, and cost-effective way to measure nitrate from 0.00 to 5.00 ppm (as NO3–) in your saltwater aquarium. For samples containing 5.0 to 50.0 ppm nitrate, follow the approved dilution procedure.\u003c\/div\u003e\r\n\u003cdiv\u003e\r\n\t \u003c\/div\u003e\r\n\u003cdiv\u003e\r\n\tNitrate is a by-product of the Nitrogen cycle. Excessive amounts of nitrates in a reef aquarium can promote the growth of undesirable organisms including algae and dinoflagellates while insufficient amounts can lead to starvation in which SPS and other corals will show signs including the loss of color and paleness.\u003c\/div\u003e\r\n\u003cdiv\u003e\r\n\t \u003c\/div\u003e\r\n\u003cdiv\u003e\r\n\tThe HI781 Nitrate Checker HC is a handheld colorimeter that uses the Beer-Lambert principle to determine the concentration of nitrate colorimetrically. The HI781 is designed specifically to measure low levels of nitrate in a saltwater aquarium.\u003c\/div\u003e\r\n\u003cdiv\u003e\r\n\t \u003c\/div\u003e\r\n\u003cdiv\u003e\r\n\tFeatures at-a-glance:\u003c\/div\u003e\r\n\u003cdiv\u003e\r\n\tFor use with saltwater samples.\u003c\/div\u003e\r\n\u003cdiv\u003e\r\n\tMore accurate than chemical test kits.\u003c\/div\u003e\r\n\u003cdiv\u003e\r\n\tDedicated to a single parameter.\u003c\/div\u003e\r\n\u003cdiv\u003e\r\n\tSmall size, big convenience.\u003c\/div\u003e\r\n\u003cdiv\u003e\r\n\tNo errors with a digital readout.\u003c\/div\u003e\r\n\u003cdiv\u003e\r\n\tIdeal for aquariums and marine biology applications.\u003c\/div\u003e\r\n\u003cdiv\u003e\r\n\tFor samples containing 5-50 ppm nitrate, follow the dilution procedure.\u003c\/div\u003e\r\n\u003cdiv\u003e\r\n\t \u003c\/div\u003e\r\n\u003cdiv\u003e\r\n\tRange\u003cspan style=\"white-space:pre\"\u003e \u003c\/span\u003e0.00 to 5.00 ppm (as NO3–)\u003c\/div\u003e\r\n\u003cdiv\u003e\r\n\t0.0 to 50.0 ppm (calculated) using dilution\u003c\/div\u003e\r\n\u003cdiv\u003e\r\n\tResolution\u003cspan style=\"white-space:pre\"\u003e \u003c\/span\u003e0.01 ppm\u003c\/div\u003e\r\n\u003cdiv\u003e\r\n\tAccuracy @ 25°C\/77°F\u003cspan style=\"white-space:pre\"\u003e \u003c\/span\u003e±0.25 ppm ±2% of reading @ 25 °C (77 °F)\u003c\/div\u003e\r\n\u003cdiv\u003e\r\n\t±2.5 ppm ± 5% of calculated reading using dilution\u003c\/div\u003e\r\n\u003cdiv\u003e\r\n\tLight Source\u003cspan style=\"white-space:pre\"\u003e \u003c\/span\u003eLED @ 525 nm\u003c\/div\u003e\r\n\u003cdiv\u003e\r\n\tLight Detector\u003cspan style=\"white-space:pre\"\u003e \u003c\/span\u003esilicon photocell\u003c\/div\u003e\r\n\u003cdiv\u003e\r\n\tMethod\u003cspan style=\"white-space:pre\"\u003e \u003c\/span\u003eColorimetric method. The reaction between nitrate and the reagent causes a pink\/violet tint in the sample. This checker has been developed to work with seawater samples.\u003c\/div\u003e\r\n\u003cdiv\u003e\r\n\tBattery Type\u003cspan style=\"white-space:pre\"\u003e \u003c\/span\u003e(1) 1.5V AAA\u003c\/div\u003e\r\n\u003cdiv\u003e\r\n\tAuto-off\u003cspan style=\"white-space:pre\"\u003e \u003c\/span\u003eafter ten minutes of non-use\u003c\/div\u003e\r\n\u003cdiv\u003e\r\n\tEnvironment\u003cspan style=\"white-space:pre\"\u003e \u003c\/span\u003e0 to 50°C (32 to 122°F); RH max 95% non-condensing\u003c\/div\u003e\r\n\u003cdiv\u003e\r\n\tDimensions\u003cspan style=\"white-space:pre\"\u003e \u003c\/span\u003e86.0 x 61.0 x 37.5 mm (3.4 x 2.4 x 1.5”)\u003c\/div\u003e\r\n\u003cdiv\u003e\r\n\tWeight\u003cspan style=\"white-space:pre\"\u003e \u003c\/span\u003e64 g (2.3 oz)\u003c\/div\u003e\r\n\u003cdiv\u003e\r\n\tOrdering Information\u003cspan style=\"white-space:pre\"\u003e \u003c\/span\u003eEach HI781 is delivered in a case with custom insert and is supplied with: Marine Nitrate Low Range reagent starter kit (reagents for 25 tests), Sample cuvette and cap (2 pcs.), Filter paper (25 pcs.), Filter holder (1 pc.), Mixing vial and cap (1 pc.), 5 mL syringe with tip (1 pc.), 10 mL syringe (1 pc.), 1 mL graduated syringe (1 pc.), Plastic refilling pipette (1 pc.), 16 gauge blunt needle (1 pc.), 1.5V AAA Alkaline battery (1 pc.), and Instruction manual.\u003c\/div\u003e\r\n\u003cdiv\u003e\r\n\tReagent Set\u003cspan style=\"white-space:pre\"\u003e \u003c\/span\u003eHI781-25 (25 tests)\u003c\/div\u003e\r\n\u003cdiv\u003e\r\n\tCalibration Set\u003cspan style=\"white-space:pre\"\u003e \u003c\/span\u003eHI781-11\u003c\/div\u003e\r\n\u003cdiv\u003e\r\n\tWarranty\u003cspan style=\"white-space:pre\"\u003e \u003c\/span\u003e1 year\u003c\/div\u003e","brand":"Hanna Instruments","offers":[{"title":"Default Title","offer_id":41721790201902,"sku":"HI-781","price":74.99,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0583\/4276\/8686\/files\/24274.jpg?v=1765980852","url":"https:\/\/mattscorals.com\/products\/hanna-marine-hi781-low-range-nitrate-checker","provider":"Matt's Corals","version":"1.0","type":"link"}