Skip to content
Come to our Bacon, Coffee and Koi Event on 23 October! >>
Come to our Bacon, Coffee and Koi Event on 23 October! >>

HANNA Phosphorus High Range Handheld Colorimeter


The HI-706 High Range Phosphorus Checker bridges the gap between simple chemical test kits and professional instrumentation. Both accurate and affordable, it is designed for fresh water applications and is extremely simple to use.


Ideal for:

  • Quick and accurate on the spot analysis
  • Fresh water aquaculture

Main Benefits

  • Testing is quick and easy
  • High precision results - more accurate than chemical test kits
  • Auto shut-off feature means the Checker cannot be left on by mistake
  • Fully portable, fitting easily into both palm and pocket

Four steps. One click. Instant Readout.

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

2. Take the 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 HI-706-11 Calibration Check Set with the HI-706 Phosphorus High Range Handheld Colorimeter - Checker®HC.

Use Reagents HI-706-25 with the HI-706 Phosphorus High Range Handheld Colorimeter - Checker®HC, x 40 tests.


Specifications list


Range 0.00 to 15.0 ppm
Resolution 0.01
Accuracy @ 25°C ±0.03 ppm ±5% of reading
Light source LED @ 525 nm
Light Detector Silicon photocell
Method Adaptation of the Standard Methods for the Examination of Water and Wastewater, 18th edition, Heteropolymolybdenum Blue method
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-706 Checker® is supplied with (2) sample cuvettes with caps, phosphorus HR reagent starter kit for 20 tests (re-ordering information HI-706-25 x 40 tests) battery, instructions.