The low-range capability (0-300 ppb) of the HI749 system is specifically designed for compliance with these stringent standards and early detection of contamination

aquariums Connection P BNC + pin*

Model 21005

Electrolyte Solution: Use with MA9072S (sold separately)

Hanna HI97771C Free & Total Chlorine Photometer - Ultra High Range 0-10 ppm multiparameter sensor The low-range capability (0-300 ppb)Hanna HI97771C Free & Total Chlorine Photometer Kit Ultra High Range Precision The Hanna HI97771C Free and Total Chlorine Portable Photometer Kit is a professional grade colorimeter designed for ultra high range chlorine measurement from 0 to 10 ppm. This complete kit measures both free and total chlorine with lab grade accuracy, making it ideal for high chlorine applications in pools, spas, water treatment facilities, and industrial water quality