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Hanna Instruments

Hanna Checker®HC Calcium colorimeter (Ca)

Hanna Checker®HC Calcium colorimeter (Ca)

Regular price €89,90 EUR
Regular price Sale price €89,90 EUR
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Delivery and return

Delivery from our own warehouse within a week. You can also pick up the product from our store! If the product is not in stock immediately, we will order it from our supplier, in which case the delivery time is 1-2 weeks.

Hanna Checker - Calcium Colorimeter

Ideal for salt water aquariums and coral reef tanks.
Designed exclusively for Saltwater aquariums, the HI-758 offers a quick, easy and highly accurate method of checking Calcium.

For replacement reagents for Calcium Checker®HC use code HI-758-26 for future purchases.

  • Easy to use
  • Accurate results every time
  • Exceptional price
  • Large LCD display

Uses top quality technology to deliver high precision results. The HI-758 Calcium Checker is a simple, accurate and cost effective way to measure marine calcium in water.

Designed as a more accurate alternative to chemical test kits, the HI 758 provides quick, accurate results in four easy steps;

  • Add 1ml of reagent A and add 9ml of deionised water to cuvette.
  • Insert cuvette into the Checker and zero it out.
  • Remove cuvette and add 0.1ml sample to be tested and 1 packet of reagent B
  • Reinsert sample and click the button to measure your results or press and hold the button for 3 seconds for a time reaction reading.

The contoured style of the HI-758 Calcium Checker is designed to fit in the palm of your hand. The large LCD is easy to read and the auto shut-off feature ensures that the battery life will not be drained if you forget to turn it off.

Ideal for:

  • Salt water aquariums
  • Coral reef tanks
  • Water quality
  • Environmental
  • Education

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

Supplied with

  • 2 sample cuvettes
  • Cuvette cap
  • Starter pack of reagents (HI-758-26)
  • 1 x 1.5 AAA battery
  • Instructions
    Also available: HI-758-11 Calibration Set


  • Range: 200 to 600 ppm
  • Resolution: 1ppm
  • Accuracy @ 25°C: ±6% of reading
  • Light Source: light emitting diode @ 610 nm
  • Light Detector: Silicon Photocell
  • Environment: 0 to 50 °C (32 to 122 °F); max 95% RH non-condensing
  • Battery Type: (1) 1.5V AAA
  • Auto-off: after 10 minutes of non-use
  • Dimensions: 81.5 x 61 x 37.5 mm (3.2 x 2.4 x 1.5")
  • Weight: 64 g (2.25 oz.)
  • Method: adaptation of the zincon method

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