VIVOSUN PH Meter Digital PH Tester Pen 0.01 High Accuracy Water Quality Tester with 0-14 PH Measurement Range for Hydroponics, Household Drinking, Pool and Aquarium, with ATC, White

High Accuracy: 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 Easy to Calibrate: Press CAL for 5 seconds to enter the calibration mode, press in turn to select the powders corresponding to 6.86, 4.00, and 9.18 to complete the calibration Easy to Carry: Pocket size, lightweight, handheld design for portability and convenience LCD Digital Display: Easy to use no matter in the day and night environment, and accurate measurement and clear display results Widely Used: Ideal for Household or commercial use, water, pool, spas, liquid food, laboratory, aquaculture and hydroponics