



HI-720 Calcium Hardness Checker Handheld Colorimeter
In Stock 2 Items available
HI-720
The HI-720 Calcium Hardness Checker is a simple, accurate and cost effective way to measure low ranges of calcium in water.Checker®HC is supplied with reagents for 25 tests. Use code HI-720-25 (25 tests) for future purchases.
The HI-720 Calcium Hardness Checker
A simple, accurate and cost effective way to measure low ranges of calcium in water.
Designed as a more accurate alternative to chemical test kits, the HI-720 provides quick, accurate results in four easy steps.
HI-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 HI-720 Calcium Hardness Checker is supplied with sample cuvettes with caps (2), calcium hardness reagent starter kit x 25 (re-ordering information HI-720-25 x 25 tests), syringes with tips (2), plastic beaker, battery, instructions and quick start guide.
Also available: Calibration set HI-720-11.
Four steps. One click. Instant Readout.
1. ‘Zero’ the Checker®HC with your vial & water sample inside
2. Take the vial out and add your reagent
3. Place your vial into your Checker®HC
4. Press the button and read the results
Use reagents HI-720-25 for HI-720 Calcium Hardness Handheld Colorimeter -Checker®HC x 25 tests
Use Calibration Set HI-720-11 for HI-720 Calcium Hardness Colorimeter - Checker®HC
Read More
Range | 0.00 to 2.70 ppm | |
Resolution | 0.01 ppm (mg/L) | |
Accuracy (@ 25°C) | ± 0.20 ppm ± 5% of reading | |
Light Source | LED @ 525 nm | |
Light Detector | Silicon photocell | |
Environment | 0 to 50°C (32 to 122°F); RH max 95% 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 Standard Methods for the Examination of Water and Wastewater, 18th edition, Calmagite method. The reaction between calcium and reagents causes a reddish-violet tint in the sample |