HIGH QUALITYDURABLE:It is very accurate for measuring range 0-14 PH, resolution 0.01 PH, 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 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 meter get the result fast and accurate, the resolution is 0.01 and with high accuracy(0.01), full pH measurements 0-14! WIDE USE: Pocket Size PH Meter is the ideal test kit for home and laboratory uses. Ideal use for testing water, swimming pools, aquariums, spas, hydroponics, food, wine and beer making and more. Automatic Calibration: Requires no adjustment screwdriver, simply complete the calibration with the automatic calibration button and includes buffer powders.