Hanna Instruments CAL Check Standard for Silica High Range Portable

The HI97770-11 Silica CAL Check standards provide a simple solution to calibrating and validating the HI97770 Silica High Range 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 HI97770 photometer.
Supplied with Certificate of Analysis
Standard value of 150 ±2.5 mg/L (ppm) SiO2
Reusable with long shelf life stability