Large backlit LCD display easy to read: the quality counter of water, with a large backlit LCD screen, is far superior to other screens, allowing for wider data reading and nighttime reading angles.andmiddot; 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. andmiddot; Fast and Accurate: Ensure your drinking water, swimming pool and regular hydroponic pH have perfect pH balance and can be used ;s with an accurate pH tester. The PH water meter has a sensitive electrode sensor, which can read the accurate pH value. andmiddot; Automatic temperature compensation: there is no need for s 'worry about the temperature of the liquid to be test, because the PH tester has a built-in automatic temperature compensation (ATC) function, which can accurately determine the pH value of the sample. andmiddot; [Easy Calibration]: The PH pen has an automatic temperature compensation function, which can be adjusted according to temperature and quality. of water, and can provide a PH reading almost immediately. The tester can also use buffer powder for testing. Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.