Extreme Accuracy. Easy to Test in 4 Steps – Zero the Checker, Add a regent to your water sample, Insert the Vile in the Checker, Read the Numbered Results. BOOM EASY. ZAIR. Zero, Add, Insert, Read.

Includes reagents for 25x tests.

The HI758 Checker® HC (Handheld Colorimeter) provides a simple, accurate and cost effective way to measure calcium. Required for the development of calcium carbonate skeletons of coral reefs, calcium is a crucial component of marine waters. Designed as a more accurate alternative to chemical test kits, the HI758 provides quick, accurate results in four easy steps: Zero the Checker, Add a regent to your water sample, Insert the Vile in the Checker, Read the Numbered Results.  BOOM EASY. ZAIR.  Zero, Add, Insert, Read.

*To zero 1 ml of reagent A is added to deionized/distilled water as a blank.

Features at-a-glance:

• Easier to use and more accurate than chemical test kits
• Dedicated to a single parameter
• Small size, big convenience
• Ideal for: Aquaculture, Water Quality, Environmental, Education