Calcium Hardness Reagents (300 tests) - HI93720-03

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The HI93720-03 are reagents for the colorimetric determination of calcium hardness. There are enough reagents for 300 tests to be used with a compatible benchtop or portable photometer. These high quality reagents are manufactured in our state-of-the-art facility and are clearly marked with the lot number and expiration date on each bottle for traceability.

  • Pre-dosed reagents for ease of use
  • Supplied with certificate of quality
  • Marked with expiration date and lot number for traceability

The HI93720-03 are high quality reagents that are pre-measured, allowing for users to achieve fast and accurate colorimetric measurements. These reagents follow an adaptation of the calmagite method. The reaction between calcium and the reagents causes a red tint in the sample. By simply adding the reagents to the sample, a reaction will take place and a compatible benchtop or portable meter can be used to determine the concentration from the color that is produced. The results will be displayed in mg/L (ppm) as calcium carbonate (CaCO3). These reagents are designed to be used with samples that have an expected range of 0.00 to 2.70 mg/L calcium hardness.


Compatible Photometers Include:






More Information
Package Dropper bottles
Quantity 300 tests
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 red tint in the sample.
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