The HI97731-11 Zinc CAL Check™ Standards provide a simple solution to calibrating and validating the compatible HI97731 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 HI97731 photometer.
Supplied with Certificate of Analysis
- Standard value of 1.50 ±0.020 mg/L zinc @ 25℃
- Reusable with long shelf life stability