✔ Large, easy-to-read backlit LCD display: the quality meter water, with a large backlit LCD screen, is far superior to other screens, allowing wider data reading and night reading angles. ✔ Wide range of uses: The pocket pH meter is an ideal pH tester for water, swimming pools, aquariums, hot springs, hydroponics, food, wine and beer making. ✔ Fast and accurate: Ensure that your drinking water, swimming pool and ordinary hydroponic pH have a perfect pH balance and can be used with an accurate pH tester. The PH water meter has a sensitive electrode sensor, which can read the accurate pH value. ✔ Automatic temperature compensation: There is no need to worry about the temperature of the liquid to be tested, because the PH tester has a built-in automatic temperature compensation (ATC) function, which can accurately determine the pH value of the sample. ✔ Easy calibration: The PH pen has an automatic temperature compensation function, which can be adjusted according to the temperature and