Stop struggling to get accurate results for your saltwater aquarium with our simple handheld colorimeter. Our nitrite colorimeter fills the gap between nitrite test kits and advanced instrumentation. Standard test kits have limited accuracy since they depend on the human eye to determine colors. Our handheld colorimeter eliminates the trouble of matching to a color chart by providing a direct saltwater nitrite result.
Our portable handheld colorimeter goes where you go.
Achieve your nitrite results easily with simple, one-button design.
Don’t worry about matching the right color, our colorimeter does it for you.
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.
Also, if tap water is to be used in an aquarium, it is recommended that it be tested for phosphate, as well as silicate, ammonia, nitrate, nitrite, pH, and alkalinity.
The HI764 Checker Handheld Colorimeter bridges the gap between simple chemical test kits and professional instrumentation. Chemical test kits are not very accurate, while professional instrumentation can cost hundreds of dollars and can be time-consuming to calibrate and maintain. Hanna Checker®’s are accurate, affordable and easy to use.
To begin measurements, first, zero the instrument with your water sample. Next, add the reagent. Last, place the vial into the Checker®, press the button and read the results. It’s that easy.
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.
Easier to use and more accurate than chemical test kits
Dedicated to a single parameter
Small size, big convenience
Ideal for: Water quality, Environmental, Plating, Education
Range 0 to 200 ppb
Resolution 1 ppb
Accuracy @ 25°C/77°F ±10 ppb ±4% of reading
Light Source LED @ 525 nm
Light Detector silicon photocell
Method adaptation of the EPA Diazotization method 354.1
Battery Type (1) 1.5V AAA
Auto-off after two minutes of non-use
Environment 0 to 50°C (32 to 122°F); RH max 95% non-condensing
Dimensions 86.0 x 61.0 x 37.5 mm (3.4 x 2.4 x 1.5”)
Weight 64 g (2.3 oz)
Ordering Information HI764 Checker®HC is supplied with sample cuvettes with caps (2), marine nitrite ULR reagent starter kit (reagents for 6 tests), battery, instructions and quick start guide.
Reagent Set HI764-25 (25 tests)
Calibration Set HI764-11
Warranty 1 year