HIGH QUALITY DURABLE: It is highly accurate for 0-14 PH measuring range, 0.01 PH resolution, working temperature: 0~60; Measures and displays pH result simultaneously with LCD display, reliable and fast reading. Fast and accurate readings: just turn it on, dip in liquid display and read, no need work with color charts or test strips; a large LCD display makes it easy to read. Accurate: this meter get the result fast and accurate, the resolution is 0.01 and with high accuracy(0.01), measures full pH 0-14 WIDE USE: Pocket Size 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: No screwdriver required adjustment, just complete the calibration with the auto-calibration button and includes buffer powders.