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Nitrite Checker HI-707

$49.95 - $62.90
(1 review) Write a Review

Free shippingFREE shipping on all orders over $79.99!(excluding orders of live fish)


Our low range nitrite colorimeter brings you more precise technology from your typical chemical test kit. Don't struggle to determine colors visually, our handheld colorimeter eliminates the hassle of matching to a color chart by providing a direct nitrite result digitally.

- One-button operation makes getting your ammonia results simple.

- Easier to use and more accurate than chemical test kits

- Range from 0 to 600 ppb NO2-N

- Uses a single AAA battery

The HI-707 Checker is supplied with 2 cuvettes with screw-on caps, nitrite reagents starter kit (good for 6 tests), battery, instruction manual and a quick start guide.

Additional ammonia reagents can be purchased at:

Reviews (1)

  • 5
    Easy to use, no color matching

    Posted by Matt on 20 Jul 2020

    I purchased this to do a fishless cycle for my pond and a container water garden. Although I could’ve used a cheaper test kit, I have a difficult time matching the colors and I wanted better accuracy and precision. When testing for free nitrite, aquarists usually think in ppm but this reads in ppb. Also, to get free nitrite ions, which is what most fish keepers measure, multiply by 3.29. Otherwise great colorimeter to let me know when the cycle is over and I can add fish.