Large backlit LCD display for easy reading: The water quality counter features a large backlit LCD screen that provides clear visibility, enabling wide viewing angles and convenient nighttime reading. Wide range of applications: This pocket pH meter is an ideal tool for measuring pH levels in water, swimming pools, aquariums, hot springs, hydroponics, food, wine, and beer. Fast and accurate results: Ensure proper pH balance in drinking water, swimming pools, and hydroponic systems with this reliable pH tester. The device is equipped with a sensitive electrode sensor that delivers precise pH readings. Automatic temperature compensation: The pH tester includes built-in automatic temperature compensation (ATC), eliminating concerns about sample temperature and ensuring accurate pH measurement across varying conditions. Easy calibration: The pH pen supports automatic temperature compensation and can be calibrated to adjust for temperature and water quality variations. It delivers pH readings quickly and can be used with standard buffer solutions for calibration.