AUTO CALIBRATION: The TDS/Ph Meter Has an Auto Temprature Compensation Feature That Adjusts to Water Temperatures and Water Quality to Give Ph Readings Almost Instantly. As Well, You Can Calibrate the Tester with One Touch Button Using Buffer Powder.

AUTOMATIC TEMPERATURE COMPENSATION: No more need to take care about the temperature of testing liquid, as ph meter has built in (ATC) automatic temperature compensation, so that it can accurately determine pH value of the sample at any temperature in a range of 0°C - 60°C (32°F - 140°F).

WIDE USE: Pocket Size TDS PH Meter is the ideal test kit for home and laboratory uses. Ideal use to test for water, pools, aquariums, spas, hydroponics, food, wine and beer making and more.

► Measuring range: pH:0.00-14.00 pH; TDS: 0-19990ppm

► Resolution: 0.01 pH; 1ppm; 0.1℃; 0.1°F

► Accuracy: pH: +/-0.01 pH; TDS: +/-2%; Temp: 0.5℃

► Batteries: 3 * 1.5V LR44 button cell (not included)

►Temp.: 0.1-60.0℃;  32.0-140.0°F

►Calibration: pH: three points automatic calibration (6.86 & 4.00 & 9.18pH); TDS: 1413ppm

►Auto shut off: 5 Minutes