Checker HC Handheld Colorimeter - Calcium

Item #: HI758
Manufacturer: Hanna Instruments
from: $49.00 sale: $40.18
Quantity unavailable. Try selecting a smaller quantity.

Product Description

The NDHI 758 Calcium Checker®HC is extremely simple to use. First, zero the instrument by adding Reagent A and deionized water. Insert into the NDHI 758 and press the button. Next, remove the vial and add 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 the palm of your hand or pocket!.

The NDHI 758 Calcium Checker HC is supplied with 2 sample cuvettes and caps, reagents for 15 tests, (1)1.5V AAA battery, and instruction manual.


  • 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!


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