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Calcium Hardness CAL Check Standards
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Calcium Hardness CAL Check Standards


The HI96720-11 Calcium Hardness CAL Check™ Standards provide a simple solution to calibrating and validating the compatible HI96720 portable photometer. This high quality set of standards is manufactured in our state-of-the-art facility and comes supplied with a certificate of analysis. The certificate of analysis provides the lot number, reference values, and expiration date for traceability when certifying the HI96720 photometer.

  • Supplied with Certificate of Analysis
  • Standard value of 1.50 ±0.07 mg/L CaCO3 @ 25°C
  • Reusable with long shelf life stability
Calcium Hardness CAL Check Standards
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