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Hanna Checker pocket photometer KH (mgr / L readout)

Hanna Checker pocket photometer KH (seawater only) (mgr / L readout). This pocket photometer has been specially designed for the determination of alkalinity or KH in seawater (not suitable for freshwater). They are many tight ...

Hanna Checker pocket photometer KH (mgr / L readout)

This pocket-sized photometer has been specially designed for the determination of alkalinity or KH in seawater (not suitable for freshwater). They are much more accurate than test kits and strips and the results are digitally displayed. They are light as a feather and therefore useful for measuring KH in seawater. No more messing around with test strips and comparing colors. Digital measurement is more accurate and very easy to read.

  • Economic, fast and accurate measurements
  • Very clear digitally readable display
  • Very easy to use with just one control button
  • Practically no maintenance
  • Automatic switch-off after 10 minutes


Measuring range 0 to 300 mg / l (= ppm) of CaCO3
Precision ± 5% of the reading value
Resolution 1 mg / l (= ppm)
Light source led at 610 nm
Method photometric with color development from yellow to yellow-green-blue
food 1 battery of 1.5 V type AAA
Measurements and weight 81.5 x 61 x 37.5 mm / 64 g

Order information

The HI 755 is supplied with two measuring cuvettes, a 1.5 V AAA battery, reagents for alkalinity and instructions. The reagents are in liquid form for better accuracy.


  • HI 755-26 Liquid reagents for alkalinity in seawater (not suitable for freshwater) for 25 analyzes
  • HI 731318 Wipes for cleaning measuring cuvettes, 4 pieces
  • HI 93703-50 Cleaning solution for measuring cuvettes, 230 ml bottle
  • HI 731321 Measuring cuvettes, 4 pieces

English description

Easier to use and more accurate than chemical test kits

  • Colorimetric method
  • Accuracy ± 5 ppm ± 5% of reading
  • 1 ppm (mg / L) resolution
  • Large, easy to read digits
  • Auto shut off

Dedicated to a single parameter

  • Designed to work with HANNA's liquid reagents
  • Uses 10 mL glass cuvettes

Small size, big convenience

  • Weighing a mere 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

Ideal for Saltwater Aquariums

The HANNA HI 755 Checker® HC bridges the gap between simple chemical test kits and professional instrumentation. Chemical test kits are not very accurate and have low resolution while professional instrumentation can cost hundreds or dollars and can be time to calibrate and maintain. The HANNA HI 755 Checker®HC is accurate and affordable.

The Checker®HC features an accuracy of ± 5 ppm (mg / L) ± 5% of reading and uses the colorimetric method.

The contoured style of this Checker® HC fits in perfectly with your palm and pocket and the large LCD is easy to read. The auto shut-off feature assures the battery life will not be drained if you forget to turn it off.

The HI 755 Checker® HC is extremely simple to use. After zeroing the instrument with your water sample, add the reagent to the cuvette and gently invert 5 times. Then insert the cuvette into the HI 755 Checker® HC and press the button to read the results. It's that easy.

Order Information

HI 755 Checker®HC is supplied with (2) sample cuvettes with caps, liquid reagents for alkalinity (25 tests approx.), Syringe with tip, battery and instructions.

Hanna Checker pocket photometer KH
Hanna Checker pocket photometer KH


  • Above € 50,- free delivery in NL & BE
    In stock Ordered before 16:00, shipped today *


Watertype : Reef
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  • Hanna Checker pocket photometer KH (mgr / L readout)

    In stock
    € 84.99 € 72.49