The HI97771-11 Free Chlorine and Ultra High Range Chlorine CAL Check™ Standards provide a simple solution to calibrating and validating the HI97771 portable photometer. The standards are used for both the 0.00 to 5.00 mg/L (ppm) low range free chlorine and the 0 to 500 mg/L (ppm) ultra high chlorine range. 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 HI97771 photometer.
- Supplied with Certificate of Analysis
- Standard value of 1.00 ±0.02 mg/L for low range and 100 ±2 mg/L chlorine for ultra high range @ 25℃
- Reusable with long shelf life stability
