Endress+Hauser launches the Memosens CCS51D amperometric sensors for free chlorine measurement in process water, drinking water, water and wastewater treatment, cooling water, and all utilities and processes requiring clean, treated water. Free chlorine is the most important disinfectant in water treatment due to its easy handling, the strong disinfecting effect and the residual effect. A precise dosing control of free chlorine can only be achieved by a fast and sensitive free chlorine measurement. Memosens CCS51D features a special membrane design providing an extremely fast response time. It helps plant operators run their disinfection processes on tight limits and save on chemicals. For more information, visit www.us.endress.com.