Skip to content

HANNA Ammonia Medium Range Handheld Colorimeter


The HI-715 Checker is a simple, accurate, and cost effective way to measure medium ranges of ammonia in fresh water.

Designed as a more accurate alternative to chemical test kits, the HI-715 provides quick, accurate results in four easy steps.

The HI-715 uses an adaptation of the ASTM Manual of water and Environmental Technology D1426-93, Nessler Method. The reaction between ammonia and reagents causes a yellow tint in the sample.



  • Small palm-sized design
  • Accurate from ±0.05ppm ±5% of reading
  • Dedicated to a single parameter
  • Uses a single AAA battery
  • Auto Power Off after 10 minutes in inactivity
  • Built-in timer for timed reaction readings

Ideal for:

  • Ponds
  • Water Quality
  • Education
  • Aquariums
  • Environmental


Order Information:

The HI-715 Checker is supplied with 2 cuvettes and caps, Ammonia MR reagents x 25 tests (HI-715-25), 1 x 1.5V AAA battery, and an instruction manual.

Not included: Calibration set HI-715-11.

Four steps. One click. Instant Readout.

1. ‘Zero’ the Checker®HC with your vial & 10ml water sample inside

2. Take your vial out and add your reagent

3. Place your vial into your Checker®HC

4. Press the button and read the results

Battery powered – Allows use away from a power source. Batteries are included with all battery operated products.

Use Reagents HI-715-25 with the HI-715 Ammonia Medium Range Handheld Colorimeter - Checker®HC, x 25 tests.

Use Calibration Check Set HI-715-11 with the Hi-715 Ammonia Medium Range Colorimeter - Checker®HC.


Specifications list


Range 0.00 to 9.99 ppm NH3-N
Resolution 0.01
Accuracy @ 25°C ±0.05 ppm ±5% of reading
Light source LED @ 470 nm
Light Detector Silicon photocell
Method 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.
Environment 0 to 50°C; RH max 95% non-condensing
Battery Type (1) 1.5V AAA
Auto-off After ten minutes of non-use
Dimensions 81.5mm x 61mm x 37.5mm
Weight 64g
Ordering Information HI-715 Checker® is supplied with (2) sample cuvettes with caps, ammonia reagent starter kit for 25 tests, battery, instructions and quick start guide.
PLEASE NOTE: In some cases, samples may contain other parameters which may interfere with results
 Interference may be caused by: Acetone
Hardness above 1 g/L
Organic chloramines
Various aliphatic and aromatic amines