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You are here : Home | Spares & Parts | Water Testing Equipment Water Testing Instruments | Single Parameter Checkers | Ammonia

Single Parameter Check - Ammonia

  • Ammonia CheckerHandheld Colorimeters
  • Easier to use and more accurate than chemical test kits
  • Dedicated to a single parameter
  • Small size, big convenience
  • Ideal for Water quality
  • Aquariums
  • Environmental

The HI700, HI715, and HI733 Checker®HC's are simple, accurate, and cost effective ways to measure ranges of ammonia in fresh water. The all new HI700 Checker®HC Ammonia LR for fresh water can be used to replace the usage of of HI3824 or HI38049 fresh water test kits.

Designed as a more accurate alternative to chemical test kits, the HI700, HI715, and the HI733* provides quick, accurate results.

Step One - Add a sample to the included cuvette(s).

Step Two - Insert sample into the Checker and press the button to zero.

Step Three - Remove sample and add reagents as the manual states.

Step Four – Reinsert sample, press and hold the button for 3 seconds to start reaction timer. reading will be taken automatically and the results displayed.

* HI733 uses a different procedure

All three models use an adaptation of the ASTM Manual of Water and Environmental Technology, D1426-92, Nessler method. The reaction between ammonia and reagents causes a yellow tint in the sample.


ImageNamePrice Inc VATBuy


HI700 (LR)HI715 (MR)HI733 (HR)
Range0.00 to 3.00 ppm NH3-N0.00 to 9.99 ppm NH3-N0.0 to 99.9 ppm as NH₄
Resolution0.01 ppm0.01 ppm0.1 ppm
Accuracy @ 25°C/77°F±0.05 ppm ±5%
of reading
±0.05 ppm ±5%
of reading
±1.0 ppm ±5%
of reading
Light SourceLED @ 470 nm
Light Detectorsilicon photocell
Environment0 to 50°C (32 to 122°F); RH max 95% non-condensing
Battery Type(1) 1.5V AAA
Auto-offafter ten minutes of non-use
Dimensions81.5 x 61 x 37.5 mm (3.2 x 2.4 x 1.5”)
Weight64 g (2.25 oz.)
Methodadaptation of the ASTM Manual of Water and Environmental Technology D1426-92, Nessler Method. The reaction between ammonia and reagents causes a yellow tint in the sample