High Quality And Durable: High precision measuring range 0-14 PH, resolution 0.01 PH, working temperature: 0℃~60℃; measures and displays pH results, LCD display, readings are reliable and fast. The readings are fast and accurate: just turn on the device, immerse yourself in the LCD screen to read, no need to use color charts or test strips ; the large LCD screen makes it easy to read. Precise: The device measures quickly and accurately, with a resolution of 0.01 and high precision (0.01), and can measure the entire pH value from 0 to 100%. 14 ! WIDE USE: The pocket pH meter is an ideal testing kit for wide use. at home and in the laboratory. Ideal for testing water, swimming pools, aquariums, spas, hydroponics, brewing food, wine and beer and more. Automatic calibration: no need to adjust the screwdriver, just use the automatic calibration button to complete the calibration and contains buffer powder.