PH818 PH Tester Professional pH Water Quality Tester Portable Pen Type pH Meter Acidometer for Aquarium Acidimeter Measure

NOTE: The calibration powder include!  Do you want to know whether the pH value of water you drink is up to the standard? If so, this pen-type pH meter is what you need. Featuring the automatic temperature compensation which will automatically compensate the solution temperature of 0~70℃, it can provide you the accurate and stable reading. Features: Test the pH level and temperature of solution/water with data hold function. Pocket size, lightweight and portable with switchable backlight & large LCD display for clear reading. Replaceable pH sensor probe - The electrode probe can be replaced with insert type design for convenient and fast replacement. ATC function (automatic temperature compensation), automatic calibration and IP65 fully waterproof design. Apply in water sources, soil-free growing, aquarium, hydroponics, laboratory, spas, swimming pools and other water systems. Specifications: Material: ABS Plastic Color: Grey Testing Range: pH: 0.00~14.00pH, TEMP: 0℃ ~ 60℃ Resolution: 0.01pH Accuracy: plusmn0.05pH Repeatability: plusmn 0.01 Operating Temperature: 0℃ ~ 50℃, le80%RH Automatic Temperature Compensation: 0℃ ~ 70℃ Calibration: 2 Points Automatic Calibration Power: 4 * 1.5V LR44 Button Cell Battery (NOT Included) Item Size: Approx. 175 * 45 * 45mm / 6.9 * 1.8 * 1.8in Item Weight: Approx. 87g / 3.1oz Package Size: Approx. 24.5 * 9 * 5.2cm / 9.6 * 3.5 * 2.0in Package Weight: Approx. 190g / 6.7oz How to calibrate the device correctly one bag powder dissolved in 250ml pure water,when you need to do the calibrate,take some solution,the rest of the solution can Sealed preservation 1 month 1. Turn on the machine, put the PH818 in pure water, clean it and wipe it with a cloth. Press and hold the calibration button, put the machine into the debugged PH4.00 solution, stir it for a few seconds, and let it stand for a few seconds until the machine screen appears. "PR5” 2. When the machine number becomes 6.86, take out the machine, clean it in pure water, wipe it with a cloth, put it into the debugged PH6.86 solution, stir it for a few seconds, and let it stand for a few seconds until the machine screen appears “PR5” 3. When the machine number becomes 9.18, take out the machine, clean it in pure water, wipe it with a cloth, put it into the debugged PH9.18 solution, stir it for a few seconds, and let it stand for a few seconds until the machine screen appears “PR5” 4. The machine is restored to the state when it was turned on, and the calibration is completed. Package List: 1 * pH Meter (Battery is not included) 1 * Storage Bag 1 * User Manual