The Calcium Hardness Checker® HC Calibration Check Set - HI720-11 provides a simple solution to validating the Calcium Hardness Checker® HC - HI720. 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 Checker®HC.
- Supplied with Certificate of Analysis
- Standard value of 75 +/- 5 ppm nitrite @ 25°C
- Reusable with long shelf life stability
*Products classified as Dangerous Goods can only be shipped via ground.