Marine Calcium Water Testing Kits

  • Handheld Colorimeter
  • Easier to use and more accurate than chemical test kits Zincon method adaptation
  • ±6 % of reading
  • 1 ppm resolution
  • Large, easy-to-read digits
  • Auto shut-off
  • Dedicated to a single parameter 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 Aquaculture
  • Aquariums

Calcium presence in water supplies results from passage over deposits of limestone, dolomite, gypsum and gypsiferous shale. The concentration may extend from 0 to several hundred milligrams per litre, depending on its source and treatment. Calcium is necessary in plant and animal nutrition since it is an essential constituent of bones, shells and plant structures. Calcium in water as carbonate is one of the primary components of water hardness which can cause pipe or tube scaling.

The HI758 Calcium Checker®HC is extremely simple to use. First, zero with Reagent A and deionised water. Next, remove the vial and add sample and Reagent B and shake to dissolve. Reinsert into the Checker®HC and press the button to read the calcium concentration in ppm on the display.

Weighing a mere 64 g (2.25 oz.), the Checker®HC easily fits into your hand or pocket.

Range200 to 600 ppm
Resolution1 ppm
Accuracy @ 25°C/77°F±6% of reading
Light SourceLED @ 610 nm
Light Detectorsilicon photocell
Environment0 to 50°C (32 to 122°F); RH max 95% non-condensing
Battery Type(1) 1.5V AAA
Auto-offafter ten minutes of non-use
Dimensions81.5 x 61 x 37.5 mm (3.2 x 2.4 x 1.5”)
Weight64 g (2.25 oz.)
Methodadaptation of the Zincon method

Need Help?

We can advise on the correct water testing equipment for your requirements.
Please contact us on
01629 363311

we are more than happy to help.