The Hanna Instruments-720 Calcium Hardness Checker is a simple, accurate and cost effective way to measure low ranges of copper in water.

Checker®HC is supplied with reagents for 25 tests. Use code Hanna Instruments-720-25 (25 tests) for future purchases.

The Hanna Instruments-720 Calcium Hardness Checker is a simple, accurate and cost effective way to measure low ranges of copper in water.

Designed as a more accurate alternative to chemical test kits, the Hanna Instruments-720 provides quick, accurate results in four easy steps.

Hanna Instruments-720 uses an adaptation of the standard methods for the Examination of Water and Wastewater, 18th edition, Calmagite method. The reaction between calcium and the reagents cause a reddish-violet tint in the sample.

Ideal for

• Water purification systems
• Heating and cooling systems
• Drinking water
• Wastewater
• Plating

Key features

Small palm-sized design

• Accurate from ± 0.20 ppm ±5% of reading

• Dedicated to a single parameter

• Auto power off after 10 minutes of inactivity
• Built-in timer for timed reaction readings

Order Information

The Hanna Instruments-720 Calcium Hardness Checker is supplied with sample cuvettes with caps (2), calcium hardness reagent starter kit x 25 (re-ordering information Hanna Instruments-720-25 x 25 tests), syringes with tips (2), plastic beaker, battery, instructions and quick start guide.

Also available: Calibration set Hanna Instruments-720-11.