Hanna Instruments

Ammonia Low Range Colorimeter HI700 Hanna Checker - Fresh Water

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Four simple steps to results. Easily and accurately test for low range ammonia in fresh water with the Hanna Checker Colorimeter - Ammonia Low Range for Fresh Water (HI 700). Designed to be more accurate alternative to chemical test kits. First, add sample to the included cuvette. Next, insert sample into the Checker and zero the instrument with your water sample. Then, remove sample and add the reagent. Finally, place the vial into back into the Hanna Checker, press the button and read the results. Done.


Easier to use and more accurate than chemical test kits.The HI 700 from Hanna Instruments uses 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. Auto shut off after 10 minutes of non-use.


Dedicated to a single parameter

Two sample cuvettes and caps. One bottle of reagent A and one of reagent B.


Small Size, Big Convenience

Weighing just 64 g (2.25 oz.), the Checker®HC easily fits into the palm of your hand or pocket. Use for quick and accurate on the spot analysis. Single button operation: Zero and Measure Operated by a single AAA battery. 

  • Range:0.00 to 3.00 ppm NH3-N
  • Resolution: 0.01 ppm
  • Measurement Method: Colormetric
  • Accuracy: ±0.05 ppm (mg/L) ±5% of reading @ 25°C
  • Light Source:Photodiode @470 nm
  • Light Detector: Silicon photocell
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Product Questions

Do you sell replacement reagents for the ammonia thanks
Question by: Dan on Feb 8, 2020, 9:03 AM
Answer by: Tyler Schafer on Feb 8, 2020, 1:41 PM
How many tests can be performed with this kit?
Question by: Charles D on Jun 7, 2017, 10:43 AM
The Hanna reagent sets will provide 25 tests.

Have a great day!
Answer by: Zack on Jun 13, 2017, 7:57 PM

i was wondering if this ammonia checker although it is stated that is for fresh water, can it work with saltwater as well?
would it be as accurate?

Question by: Thanasis on Feb 26, 2014, 9:04 AM
Hi Thanasis,
This ammonia checker is only compatible with freshwater. Its generally used by people with saltwater aquariums who want to check there tap water for ammonia content (which would be indicative of chloramines being present in the water).
Answer by: Bulk Reef Supply on Feb 26, 2014, 9:04 AM