Single cylinder ORP electrode allows you to connect the 50 ohm BNC socket directly into the input terminal of ORP meter or ORP controller or any ORP device that has a BNC input terminal. This replaceable ORP electrode gives you the flexibility to measure a solution in a container as far as 300 cm from the device. It precisely determines the redox tension of the intended solution to be measured. Once your new ORP electrode probe is connected to the electrode input terminal, calibrate it first with the calibration (buffer) solutions before using the newly replace ORP electrode. This can be used for general water applications such as drinking, domestic and rainwater, aquariums, tanks, ponds, pools, spas, etc. Features:  Replaceable ORP electrode Provides instant ORP measurement Simple and comfortable to install and use  High and accurate measurement Comes with protective cap to ensure the safety of the bulb Reliable, stable, and transportable Specification: Measuring Range: -1999~1999mV  Resolution: 1mV Accuracy: ±0.1% F·S±1 digit  Cable Length: about 300cm long Connection: 50 ohm BNC socket Set Includes: 1 x ORP Electrode 50 ohm BNC Type Protective Carrying case

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