The HI97732-11 Dissolved Oxygen CAL Check™ Standards provide a simple solution to calibrating and validating the compatible HI97732 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 HI97732 photometer.
Supplied with Certificate of Analysis
Standard value of 5.0 ±0.4 mg/L dissolved oxygen @ 25℃