Description ORP 2069 Digital Pen type Redox Tester ORP Meter Tester Measure WaterThis ORP meter is a pen type device to measure the amount of Oxidation Reduction Potential ORP level in sample quickly and conveniently ORP is a tendency of the solution to either gain or lose electrons The backlight LCD equipped enables users to do testing and measurement even in dark fields Oxidation is defined as the loss of electrons in a molecule atom or ion An oxidizing agent e g Chlorine and Ozone is a substance that acquires electrons in a Redox reaction ORP is a potential which is measured in millivolts mV The more positive the ORP value the greater the power of water disinfection thus the faster the microorganism is killed oxidized ORP is correlated with the quality and purity of water ORP meter has a wide range of applications in water sources aquarium hydroponics spas swimming pools and other water systems Specification Range 1999 mV to 1999 mVAccuracy 5 mVResolution 1 mVLCD Display 4 DigitsOperating Temperature 0 50CCalibration By mini screwdriver included Clear LCD with backlight Compact and portable pen type design Easy to use and provides instant display of results Calibration Method 1 Switch on the ORP Meter and immerse the electrode in the distilled water for few hours 2 Immerse the electrode in 256mV calibration solution 4 01 calibration solution of quinhydrone reagent stir the meter gently 3 Wait till the reading is st