Hanna HI764 Nitrite Checker Print this pagePrint this page
Hanna HI764 Nitrite Checker
Price: $53.50


To get more familiar with this quality professional grade Hanna HI764 Nitrite Checker.

  • Easier to use
  • Dedicated to a single parameter
  • Small Size, Big Convenience
↓See detailed description below.↓

HI 764 Hanna Checker Colorimeter - Nitrite Ultra Low Range

Easier to use and more accurate than chemical test kits

Adaptation of EPA Diazotization method Accuracy ±4% of reading ±10 ppb 1 ppb resolution (200 points) Large, easy to read digits Auto shut-off.

Dedicated to a single parameter

Designed to work with HANNA’s powder reagents Uses 10 mL glass cuvettes.

Small Size, Big Convenience

easily fits into the palm of your hand or pocket Use for quick and accurate on the spot analysis Single button operation: Zero and Measure Operated by a single AAA battery.


Nitrites are an intermediate form of nitrogen, produced when ammonia is converted into nitrate during the Nitrogen Cycle. As organic matter decays, it produces ammonia. Highly toxic ammonia is converted into nitrite by bacteria, and the nitrite is converted into nitrate by another bacteria. Nitrite is dangerous to aquatic life if it builds up, causing tissue damage that can lead to illness and death. The HANNA HI 764 Checker®HC bridges the gap between simple chemical test kits and professional instrumentation. Chemical test kits are not very accurate and only give 5 to 10 points resolution while professional instrumentation can cost hundreds of dollars and can be time consuming to calibrate and maintain. The HANNA HI 764 Checker®HC is accurate and affordable. This Checker®HC features an accuracy of ±4% of reading and uses an adaptation of EPA Diazotization method. The contoured style of this Checker HC fits in your palm and pocket perfectly and the large LCD is easy to read. The auto shut-off feature assures the battery life will not be drained if you forget to turn it off. The HI 764 Checker HC is extremely simple to use. First, zero the instrument with your water sample. Next, add the reagent. Last, Place the vial into the HI 764 Checker®HC, press the button and read the results. It’s that easy.

  • Range - 0 to 200 ppb
  • Resolution - 1 ppb
  • Accuracy - ±4% of reading ±10 ppb @ 25ºC
  • Light Source - LED @ 525 nm
  • Light Detector - Silicon photocell
  • Environment - 0 to 50°C (32 to 122°F); RH max 95% non-condensing
  • Battery Type - (1) 1.5V AAA
  • Auto-off - After 3 minutes of non-use
  • Dimensions - 81.5 x 61 x 37.5 mm (3.2 x 2.4 x 1.5”)
  • Weight - 64 g (2.25 oz.)
  • Method - Adaptation of EPA Diazotization method 354.1.