Kit with stands (0 and mg/l) for HI720

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

HI720-11 is a high-quality set of calibration standards that allows users to validate the Calcium Hardness Checker^® HC - HI720. The HI720-11 includes one sealed cuvette for zero ppm CaCO₃ and one cuvette that is tinted to an equivalent 1.50 ± 0.25 ppm CaCO₃ sample @ 25^oC. The calibration check set is produced in our state-of-the-art manufacturing facility using reagent grade chemicals in a temperature controlled environment.