... digital indicator with back light 3.Temperature compensation 4 High precision PH sensor 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 ... Dimension: 96*96*125mm13.N.W: 1 KG High precision PH sensor