Jenco Instruments is a manufacturer of precision analytical instruments, transmitters, and controllers, for measuring and monitoring process variables such as pH, ORP, Conductivity, TDS, Temperature, Ion Concentration, and Dissolved Oxygen. Instruments are available in both handheld and benchtop units, as well as available for panel mounted display. Jenco also carries a complete line of electrodes, solid-state sensors, and conductivity cells, for laboratory, plant, and field use.