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Nitrite Ultra Low Range Colorimeter HI764 Hanna Checker HC - Marine Water

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  • Hanna Checker HC Colorimeter HI764 Nitrite Ultra Low Range - Marine Water

Nitrite Ultra Low Range Colorimeter HI764 Hanna Checker HC - Marine Water

50% Recommend this to a friend (1 of 2)

SKU: 208639
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Quick Overview

Check for Nitrite easily in your tank. The Hanna HI764 Checker HC Handheld Colorimeter for Nitrite ULR bridges the gap between simple chemical test kits and professional instrumentation. Accurate, affordable and easy to use. First, zero the instrument with your water sample. Next, add the reagent. Last, place the vial into the Hanna Nitrite Checker, press the button and read the results. Done.

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Previously Asked Questions

  • by Robert on February 2, 2015, @3:56 AM

    what is the range of this in ppm? thanks

    Bulk Reef Supply Great Question Robert! This checker has a range of 0 to 200ppb/0.2ppm

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Full Details

HI764 Nitrite Ultra Low Range Colorimeter Manufacturer's Manual

Hanna Checker Nitrate ULR Manufacturer's Literature


  • Easier to use and more accurate than chemical test kits
  • 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
  • Fits in the palm of your hand


  • Range: 0 to 200 ppb
  • Resolution: 1 ppb
  • Accuracy: ±10 ppb ±4% of reading at 25°C
  • 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 2 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


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2 Items

  • Unnecessary By BobG on 3/22/2015

    Bought this thinking it was a Nitrate test (My Bad). My Nitrites are virtually zero as you would expect in a 7-year old tank. I was looking for something to test Nitrate to gauge my water change frequency since the color change tests seem too difficult to discern the shade.
  • Good but has issues By Jb on 2/23/2015

    The other Hanna checker I bought works great, but this one is somewhat defective. If you touch it wrong or try to close the lid, it shuts off and goes blank. It took me 30 minutes of messing with it to get to initially turn on. I just can't close the lid or touch it while waiting for the reading.

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