Get exclusive volume discounts, bulk pricing updates, and new product alerts delivered directly to your inbox.
By subscribing, you agree to our Terms of Service and Privacy Policy.
Direct access to our certified experts
Get exclusive volume discounts, bulk pricing updates, and new product alerts delivered directly to your inbox.
By subscribing, you agree to our Terms of Service and Privacy Policy.
Direct access to our certified experts

Range: 200 - 600 ppm
Resolution: 1 ppm
Accuracy: ±6%
Light source: LED @ 610 nm
Light Detector: Silicon photocell
Method: Adaptation of the Zincon method
Environment:0 - 50°C
Battery Type: (1) PIN 1.5V AAA
Auto-off: After ten minutes of non-use
Dimensions: 81.5mm x 61mm x 37.5mm
Weight: 64g
Ordering Information: HI758 Calcium Checker is supplied with (2) sample cuvettes with caps, calcium reagent starter kit for 25 tests, dropper, (2) 1 ml syringes with tips, battery, instructions and quick start guide.
Option: HI758-11 Marine Calcium Checker HC® Calibration Check Set, HI758-26 Marine Calcium Checker Reagents, HI731318 Microfiber Cloth for Wiping Cuvettes (4)