The Hanna Checker® bridges the gap between simple chemical test kits and professional instrumentation. Chemical test kits are not very accurate and only give 5 to 10 points resolution while professional instrumentation can cost hundreds of dollars and can be time-consuming to calibrate and maintain. The Checker® is both accurate and affordable.
The HI720 Checker®HC (Handheld Colorimeter) is a simple, accurate, and cost effective way to measure calcium. Designed as a more accurate alternative to chemical test kits, the HI720 provides quick, accurate results in four easy steps:
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: Water quality, Environmental, Plating, Education
Specifications
SKU
HI720
Name
Calcium Hardness Checker® HC
Hardness, Calcium Range
0.00 to 2.70 ppm
Hardness, Calcium Resolution
0.01 ppm
Hardness, Calcium Accuracy
±5% of reading ± 0.20 ppm
Hardness, Calcium 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.
Photometer/Colorimeter Light Source
LED @ 525 nm
Photometer/Colorimeter Light Detector
silicon photocell
Battery Type/Life
(1) 1.5V AAA
Automatic Shut-Off
after ten minutes of non-use
Environment
0 to 50°C (32 to 122°F); RH max 95% non-condensing
Weight
64 g (2.25 oz.)
Dimensions
81.5mm x 61mm x 37.5mm (3.2 in. x 2.4 in. x 1.5”)
Ordering Info
HI720 Checker®HC is supplied with 2 cuvettes and caps, reagent starter kit (6 packets of reagent), 1 X 1.5X AAA battery, and an instruction manual. *CALcium Hardness Checker® HC