[AUTOMATIC CALIBRATION] The pH meter features automatic temperature compensation that adjusts for water temperature and quality, delivering pH readings almost instantly. No need for adjustment tools before usesimply complete calibration using the auto-calibration button and the included calibration powders.[EASY & FAST & ACCURATE] This digital pH water quality meter offers high accuracy with a measurement range of 0 to 14 pH and a resolution of 0.01 pH. Simply remove the protective cap, immerse the electrode in the solution, turn on the meter using the ON/OFF switch, and read the result on the display. No color charts or test strips required. Provides simultaneous measurement and display via LCD for reliable, fast results.[COMFORTABLE DESIGN] Includes three additional sets of pH calibration powders for precise calibration using the provided pH 4.00, 6.86, and 9.18 standardsoffering greater accuracy than test strips. Features a large backlit LCD screen for easy reading. The handheld pen-style design is portable and fits easily in your pocket or bag for convenient transport.[WIDELY APPLICATION] Compact pocket-sized pH meter ideal for home and laboratory use. Suitable for measuring pH levels in drinking water, pools, aquariums, spas, hydroponics, food, and wine. A versatile tool for testing the pH value of various liquids.Color: Yellow Material: ABS Package Contents: 1 x pH meter 3 x pH calibration powders 1 x parent box 2 x 1.5V LR44 batteries 1 x user manual in English Note: Light reflection and display differences may cause slight color variations between the product image and the actual item. Measurement error allowance is +/- 1-3 cm.