The Halogen MP5 sensor sets a new standard that measures five parameters and amperometric chlorine without membranes or reagents. The MP5 does not require a waste stream and can be used in many installation and monitoring configurations unaffected by flow or pressure. In accordance with EPA method 334.0, the MP5 sensor can be used for reporting chlorine residual measurements. Measures free chlorine, pH, conductivity, temperature and ORP. Can be installed directly in a pipe. It is self‐cleaning.