Hanna Instruments Saltwater Aquarium Calcium Colorimeter - Checker HC

Hanna Instruments Saltwater Aquarium Calcium Colorimeter - Checker HC


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Calcium presence in water results from 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.

The HI758U Calcium Checker is extremely simple to use. First, zero the instrument by adding Reagent A, deionized water and 0.1 ml of sample into the vial. Insert into the HI758U and press the button. Next, remove the vial and add Reagent B and shake to dissolve. Reinsert into the checker and press the button to read the calcium concentration in ppm on the display.

  • Weighing a mere 64 g (2.25 oz.), the HI758U Calcium Checker 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

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