Hanna Instruments-775 Freshwater Alkalinity Colorimeter - Checker®HC

Hanna InstrumentsSKU: HI-775

Sale price£65.90

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In stock


Ideal for fresh water aquariums (not suitable for salt water marine tanks).

The HI-775 Alkalinity Checker for fresh water is a simple, accurate and cost effective way to measure alkalinity in fresh water.

Checker®HC is supplied with reagents for 25 tests.

Use code HI-775-26 for future purchases.

Designed as a more accurate alternative to chemical test kits, it is easy to use with single button operation and a large LCD display. This mini tester also features auto shut-off to ensure a longer battery life.

The Hanna Instruments-775 is ideal for checking water quality, great for educational and environmental applications and for use in freshwater aquaria.

Designed as a more accurate alternative to chemical test kits, the Hanna Instruments-775 provides quick, accurate results in four easy steps. (See below).

The Hanna Instruments-775 uses a colorimetric method. The reaction causes a distinctive range of colours from yellow to blue to develop. This meter has been developed to work with fresh water samples.

Please note: Any chlorine present in the sample will interfere with the reading. To remove the chlorine interference add one drop of Hanna Instruments-93755-53 Chlorine Remover to the unreacted sample prior to testing.


    • Small palm-sized design
    • Accurate from ±5ppm ± 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:

  • Water Quality
  • Education
  • Freshwater Aquarium
  • Environmental

Order Information:

The Hanna Instruments-775 Checker®HC is supplied with 2 cuvettes and caps, alkalinity reagent kit for 25 tests (Hanna Instruments-775-26), 1 x1.5V AAA battery, and an instruction manual.

Also available: Hanna Instruments-775-11 Calibration set.

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