Nitrite Checker Hanna HI764/Salt Water Aquarium Ultra Low Rang/ HI 764

HANNA HI 764 Saltwater Aquarium Ultra Low Range Nitrite Colorimeter checker. Nitrification is the biological oxidation of ammonia (ammonium ion) into nitrite followed by the oxidation of the nitrites to nitrates. The first step of this 2-step process is carried out in an aquarium by nitrifying bacteria. During this quick process, the ammonium levels drop while the nitrite levels increase. Since nitrite is just as harmful as ammonia, nitrite levels should be maintained at immeasurable levels. A mature biological filter should be able to keep nitrite levels low. Specification : Range :0 to 200 ppb Resolution :1 ppb Accuracy @ 25oC/77oF : plus min.0 ppb pluamin.4% of reading Light Source : LED @ 525 nm Light Detector :silicon photocell Method : adaptation of the EPA Diazotization method 354.1 Environment : 0 to 50oC (32 to 122oF); RH max 95% non-condensing Battery Type(1) : 1.5V AAA Auto-off : after two minutes of non-use Dimensions : 81.5mm x 61mm x 37.5mm (3.2 #34; x 2.4 #34; x 1.5) Weight :64 g (2.25 oz.) Ordering Information : HI 764 Checker is supplied with (2) sample cuvettes with caps, nitrite ULR reagent starter kit for 6 tests (6 powder reagent packets), battery, instructions and quick start guide.