Calcium presence in water supplies results from passage over deposits of limestone, dolomite, gypsum and gypsiferous shale. Its concentration may extend from 0 to several hundred milligrams per liter,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.

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

Easier to use and more accurate than chemical test kits!.
Large, easy to read digits.
Auto shut off.
Operated by a single AAA battery
Use for quick and accurate on the spot analysis.
Single button operation: zero and measure.
Ideal for Aquaculture and Aquarium testing!

Order Information:
HI 758 Calcium Checker HC is supplied with 2 sample cuvettes and caps, reagents for 15 tests, (1)1.5V AAA battery, and instruction manual

Spécifications:

Range 200 to 600 ppm
Resolution 1 ppm
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