Featuring a polycarbonate body, Sensorex S150C and S151C-ORP 12mm electrodes can be used with any pH or ORP meter. They feature a tip that offers pH bulb and ORP platinum protection while maintaining optimum flow through the body’s slots. The S150C electrode has a measurement range of 0-14 pH (0-12.3 pH without .Na+ error) with a pH response speed of >90% in 1 second.