PH/ORP Electrode: * PHD-01: 1-14PH 0~80C glass electrode for sewage, industy water, river water * PHD-02: 1-14PH 0~80C glass electrode for pure water, Boiler water * PHD-03: 1-14PH 0~80C Antimony electrode for Hydrofluoric water * PHD-04: 1-14PH 0~130C PTFE glass electrode for High Temperature water * PHD-05: 1-14PH 0~130C Easyferm Plus 120 electrode for Fermentation & Medicine