... indicator with back light 3.Temperature compensation 4 water ph sensor ApplicationIndustrial waste water,pure water, circulating water,food wastewater treatment ... water treatment, glass carving process, electroplating wastewater, printing and dyeing, electronic semiconductor, chemical, pharmaceutical, etcFeatures:1.High impedance preamplifier, strong ability ... : 96*96*125mm13.N.W: 1 KG water ph sensor