Marine Nitrite Ultra Low Range Checker® HC - HI764

SKU: HI764

Ships within 5-10 Business Days
This product is considered hazardous to ship and is subject to extra handling fees.

The Hanna Checker® bridges the gap between simple chemical test kits and professional instrumentation. Digital accuracy provides fast, precise measurements without the need for subjective visual color chart comparisons. 

  • Compact, portable design
  • Built-in timer
  • One-button operation
  • Range 0 to 200 ppb with 1 ppb accuracy

Ideal for: Aquariums, Water quality, Environmental, Plating, Education

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.

If tap water is used in an aquarium, it is recommended that it be tested for phosphate, as well as silicate, ammonia, nitrate, nitrite, pH, and alkalinity.

The contoured style of these Checker®’s fit 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.

How to use Hanna Checker Handheld Colorimeter


  • Easier to use and more accurate than chemical test kits
  • Dedicated to a single parameter
  • Small size, big convenience


More Information
Product Name Marine Nitrite Ultra Low Range Checker® HC - HI764
Quote Required No
Dangerous Good This product is considered hazardous to ship and is subject to extra handling fees.
Nitrite Range 0 to 200 ppb
Nitrite Resolution 1 ppb
Nitrite Accuracy ±10 ppb ±4% of reading
Nitrite Method adaptation of the EPA Diazotization method 354.1.
Photometer/Colorimeter Light Source LED @ 525 nm
Photometer/Colorimeter Light Detector silicon photocell
Battery Type/Life (1) 1.5V AAA
Automatic Shut-Off after two minutes of non-use
Environment 0 to 50°C (32 to 122°F); RH max 95% non-condensing
Weight 64 g (2.25 oz.)
Dimensions 81.5mm x 61mm x 37.5mm (3.2" x 2.4" x 1.5”)
Ordering Information HI764 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.
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