HIGH QUALITY DURABLE: It is very accurate for a measuring range of 0 to 14 PH, resolution of 0.01 PH, operating temperature: 0~60; Measures and displays pH result simultaneously with LCD display, reliable and fast reading. Quick and accurate readings: just turn it on, dip into the liquid display and read, no need work with color charts or test strips; a large LCD screen makes it easy to read. Precise: this meter gets the result quickly and accurately, the resolution is 0.01 and with great precision (0.01), measures full pH 0-14! p> WIDE USE: Pocket Size PH Meter is the ideal test kit for home and laboratory use. Ideal use for testing water, swimming pools, aquariums, spas, hydroponics, food, wine and beer making and more. Automatic calibration: requires no screwdriver setting, simply complete the calibration with the automatic calibration button and includes buffer powders.