... Drinking water,Swimming pool and Tap water PH controller/PH meter/PH electrode ApplicationIndustrial waste water,pure water, circulating water, ... treatment, glass carving process, electroplating wastewater, printing and dyeing, electronic semiconductor, chemical, pharmaceutical, etcFeatures:1.High impedance preamplifier, strong ... water,Swimming pool and Tap water PH controller/PH meter/PH electrode