Package Included: 1 x pH Meter, 1 x Instruction Manual. Easy to useJust remove the protective cap and immerse the pH electrode- meter in the solution and turn on the PH by "ON/OFF" switch to be measured. High Quality Durable: It is very accurate for 0-14 PH measurement range, resolution of 0.01 PH, Measures and displays pH result simultaneously with LCD display, reliable and fast reading. Widely Applicable: Ideal for home and laboratory applications such as beverages, drinking water , swimming pools, spas, aquarium, hydroponics, cosmetics, etc. Convenient design: Large LCD display makes it easy to read the measurement results. Pocket size for easy carrying. Product Description Package Includes: 1 * PH meter PH meter< /p> Measuring range is 0-14.0 PH Resolution: 0.01 PH Accuracy: +/- 0.01 PH value Using environment: 0-60 (32-140) Power supply: 2*1.5V (LR44 button battery) Calibration: automatic three-point calibration (only 6.86-point calibration: accuracy is 0.1ph Dimension: 155mm * 31mm * 18mm Weight: 50g1.7z Color yellow Attention: 1.Please calibrate the PH meter before each use and use it after cleaning. 2. The correct reading value change is less than 0.01, and the PH change is about 10.