JUMO Experts in Measurement and Control for Temperature, Pressure, Humidity, pH, ORP, Conductivity and much more.

Weiss Research manufactures pH electrode, Ion-selective Electrodes, ORP electrode, Dissolved oxygen Probe, Conductivity Probes and Reference Electrodes

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Sentek manufacture Electrochemical Sensors for pH, Conductivity, Dissolved Oxygen and Ion Specific Electrodes. UK based specialising only in the production of ...