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HI 758 Calcium Checker HC is supplied with 2 sample cuvettes and caps, reagents for 25 tests, (1)1.5V AAA battery, and instruction manual
Range 200 to 600 ppm
Resolution 1 ppm
Accuracy @ 25C 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
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