DURABLE HIGH QUALITY: It is very accurate for 0-14PH measuring range, 0.01PH resolution, operating temperature: 0~60; Measures and displays the pH result simultaneously with LCD display, reliable and fast reading. Fast and accurate readings: just turn it on, dive into the liquid display and read, no need to work with color charts or test strips; a large LCD screen makes it easy to read. Accurate: this counter get the fast and accurate result, the resolution is 0.01 and with precision buaucoup (0.01), full pH measurements 0-14 WIDE USE:Pocket Format PH Meter is the ideal test kit for home and laboratory uses. Ideal use for testing water, pools, aquariums, spas, hydroponics, food, wine and beer making and more. Auto Calibration: does not require any adjustment screwdrivers, just finish calibration with the auto calibration button and includes buffer powders. Color: yellow