AUTO CALIBRATION - This digital pH meter is factory calibrated to provide fast and accurate results. The digital pH tester features automatic temperature compensation that adjusts for water temperature and quality, delivering pH readings almost instantly. HIGH ACCURACY - The water pH meter includes a sensitive electrode sensor for precise pH level detection. The detailed manual included helps ensure accurate and stable measurements, making it ideal for maintaining proper pH balance in pools, hydroponic systems, drinking water, and more. AUTOMATIC TEMPERATURE COMPENSATION - The digital pH meter automatically compensates for temperature variations in water, ensuring reliable and consistent pH readings across different conditions. WIDE RANGE OF USE - Equipped with a high-quality glass pH probe, this pH tester is suitable for a variety of applications including drinking water, pools, aquariums, RO systems, spas, hydroponics, food, wine, and beer production. It is a versatile solution for both home and laboratory use. FAST AFTER-SALES SUPPORT - If you experience any quality issues with the product, please contact the seller directly. Assistance will be provided promptly to resolve any concerns.