The modular S10 Ion Selective Electrode (ISE) sensor with ISE cartridges from Electro-Chemical Devices (ECD) is suitable for a wide range of fluid analysis applications required in industrial and municipal water treatment applications. It can measure multiple common parameters in fluid analysis, including ammonium, bromide, chloride, cyanide, fluoride, sulphide, calcium, potassium and sodium ions. In addition to specific ions, the S10 Sensor can also be configured for the measurement of pH, ORP, DO and conductivity/resistivity.