The ORP probe consists of a measuring electrode in contact with the solution and a stable reference electrode. The ORP value in aqueous solution is used to measure the effectiveness of disinfectants in water. In the swimming pool, the higher the oxidation-reduction potential, the more effective the disinfectant is. For water quality monitoring systems, ORP values can be used for operation Quickly provide numerical evaluation of the disinfection potential of water by personnel. This allows operators to evaluate the activity of disinfectants rather than their dosage.