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CheckerHC - Model HI 758 -Handheld Colorimeter - Calcium
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.
The HI 758 Calcium Checker®HC is extremely simple to use. First, zero the instrument by adding Reagent A and deionized water. Insert into the HI 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!.
- 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.
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