The ASP100E Glass shell pH combination electrode has blue low-impedance hemispherical glass membrane, high strength, not easy to break. Ceramic liquid contact, fast response, not easy to block, easy to clean. Separate or integrated lead optional. Optional PG13.5 thread, more convenient installation. Optional with and without temperature unit; temperature unit can be selected. It is applied to domestic sewage, industrial sewage, surface water, electroplating, machining, printing and dyeing, biochemistry, laboratory sewage, etc.