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Product Description: ORP is the abbreviation for Oxidation-Reduction Potential, which indicates the oxidation potential of a solution. The ORP value is a measurement of the redox capacity of an aqueous solution, and its unit is mV. The ORP meter is a specialized instrument for testing the oxidation-reduction potential of solutions.
KL-169D Pen ORP Meter Measurement Range -1999 to 1999 mV Resolution 1 mV Accuracy ±5 mV Battery 4×1.5V (AG13) Operating Temperature 0°C to 50°C Dimensions 170mm×36mm×23mm Weight 85g