Automatic chlorine and pH control, either indirectly or optionally (extra charge), directly on chlorine and pH. Includes: - 1 central electronic command processor Cl - Rx - pH - 1 pH electrode - 1 chlorine electrode via Redox - 1 device for direct measurement of chlorine through an ammeter cell The system enables direct visual control of the chlorine content and its automatic correction. Its function for measuring chlorine (Cl) directly is based on the chromatographic method of analysis and requires the use of solutions. The system is available as an option with either two HC400 10-10 doses (code 50188) or an HC 400 10-10 chlorinator (code 50188) and a 40 kg tablet container (code P50180).