Usage Tips:Digital Tester 169E ORP/Redox Tester ORP Tester Potential Positive and Negative ORP Meter High Precision Tester Meter FG05Oxidation-Reduction Potential ORP is an abbreviation that represents the oxidation potential of the solution. ORP value is a measure of the ability of the redox solution, the unit is mV. ORP meter test solution redox potential of special equipment.The instrument enclosure waterproof design, waterproof rating of IP55. The electrode can be d.With data lock function to facilitate the measurement and recording of data stored; Negative potential (O.R.P) penThe introduction of advanced technology and components, greatly reducing the volume, reduce costs, maintain the quality, so the use of ORP gained popularity. Suitable for functional energy water purifier and negative potential energy cups and other needs of the determination of the value of having a negative potential.The main technical indicators: Measuring range Range: 0 ~ +/- 1999mg/LmV; Resolution Resolution: 1mV; Accuracy: Accuracy: +/- 5mV; Voltage Battery: 4 x 1.5V (-13 batteries) not included; Operating Temperature Operating Temperature: 0 ~ 50; Correction Calibration: 1 point calibrationProcedure: