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Orion pHuture probes utilize solid state technology to measure pH and temperature. The pHuture probe is an active, electronic device where the potential developed at the sensing surface is dependent on solution pH. This surface potential induces a measuring transistor to determine the pH of the solution. Orion pHuture probes utilize solid state technology to measure pH and temperature. The pHuture probe is an active, electronic device where the potential developed at the sensing surface is dependent on solution pH. This surface potential induces a measuring transistor to determine the pH of the solution. Temperature is simultaneously monitored at the precise point of pH measurement. The change in potential and temperature are translated into a temperature compensated pH reading by the meter. Low Maintenance^TM Epoxy, gel-filled electrode which offers advantage of permanent reference electrolyte. Recommended Use: When fast pH determination is needed or when glass is undesirable or prohibited. pHuture probe with conversion box for electrode use with any pH meter with BNC input.