169E Digital ORP Redox Tester, High Precision Positive and Negative ORP Meter with IP55 Waterproof Housing and Replaceable Electrode

Oxidation-Reduction Potential ORP is an abbreviation that stands for the oxidation potential of a solution. The ORP value measures the redox capability of a solution, with mV as its unit. An ORP meter is specialized equipment for testing solution redox potential. The instrument features a waterproof enclosure design with an IP55 waterproof rating. The electrode is replaceable. It comes with a data lock function to make measurement and recording of stored data more convenient; Negative potential (O.R.P) pen The adoption of advanced technology and components greatly reduces the volume and lowers costs while maintaining the original quality, which is why ORP has become widely used. Suitable for functional energy water purifiers, negative potential energy cups, and other applications that require determining the value of negative potential. Main technical indicators: Measuring range: 0 - 1999mg/LmV; Resolution: 1mV; Accuracy: 5mV; Battery Voltage: 4 x 1.5V (-13 batteries) not included; Operating Temperature: 0 - 50; Calibration: 1 point calibration Procedure: 1.Remove the protective cover. 2.Press the "ON/OFF" switch to power on. 3.Place the electrode in the test solution and shake gently until the displayed value becomes stable. 4.Press the "HOLD" key to keep the current measurement value. If you need to re-measure, press the "HOLD" button again to automatically release the hold. 5.After use, press the off switch, rinse the electrode with distilled water, and put on the protective sleeve. Battery installation: If the display is blurry or shows nothing, you should replace the batteries. When replacing the battery, unscrew the cover to replace it, and pay attention to the battery polarity. CALIBRATION: 1.Immerse the meter in distilled water. Activate it after a few hours. 2.Immerse the meter in the calibration solution and stir it gently. 3.Adjust the trimmer with a screwdriver until the LCD screen reads 265mV. 4.Rinse the electrode with distilled water and dab it dry with filter paper. colour: white and green Material: ABS and electronic components Size: 18.8cm x 3.5cm x 3.5cm Package Contents: 1 x 169E ORP Tester 1 x English manual Only the above package content is included, other products are not included. Note: Light and different displays may cause the color of the item in the picture to differ slightly from the real thing. The measurement allowed error is 1-3cm.