Disinfectants are used in a variety of fields. Our online monitors with control functions are designed to meet specific demands, depending on the application.
Under unknown conditions (and at pH above 8.5) Swan recommends using a photometer.
Photometric Disinfectant Monitoring
The Codes-II Series for continuous online determination of disinfectants based on the DPD colorimetric method (EN ISO 7393-2; APHA 4500 Cl-G).