VANTAKOOL Digital Meter 0.01 PH High Accuracy Water Quali, METER-97 WIDE USE: Pocket Size PH Meter is the ideal test kit for home and laboratory uses. Ideal use to test for water, pools, aquariums, spas, hydroponics, food, wine and beer making and more. FAST AND ACCURATE: Ensure your pool, general hydroponics ph or even drinking water has a perfect pH balance and safe for use with VANTAKOOL Tester precision pH accuracy. VANTAKOOL Tester has a sensitive electrode sensor to read accurate pH levels. The included detailed manual will show you how to get the best accurate and stable reading AUTOMATIC TEMPERATURE COMPENSATION: No more need to take care about the temperature of testing liquid, as ph meter has built in (ATC) automatic temperature compensation, so that it can accurately determine pH value of the sample at any temperature in a range of 0C - 80C (32F - 176F) AUTO CALIBRATION: The VANTAKOOL PH meter has an auto temprature compensation feature that adjusts to water temperatures and water quality to give pH readings almost instantly. As well, you can calibrate the tester with one touch button using VANTAKOOL Buffer Powder. MAKE YOU SATISFIED WITH THE PRODUCTS: Come with 1x VantaKool PH meter, 1x user manual, 2x 1.5V LR44 button cells(build-in), 3x PH Buffer Powders; 1-Year Warranty.