PH-MÈTRE 4 IT 1: The quality tester The water meter can simultaneously measure pH, TDS (ppm), EC (conductivity) and temperature with high accuracy. You can use it to perform a water hardness test, liquid pH or liquid conductivity test. Note: EC and TDS modes are stable for a long time. EC/TDS/pH modes can be quickly reset to restore the factory calibration state, without the need for frequent calibration. HIGH ACCURACY: The 4-in-1 pH tester has; a highly sensitive glass electrode combined with a fully intelligent chip. The measuring range is from 0.00 to 0.00 14.00 pH, and the measurement accuracy reaches 0.01 pH, providing fast, accurate and stable measurement results. AUTOMATIC CALIBRATION: No need to worry about calibration anymore. Simply place the electrode in a standard pH solution and press the MODE/CAL button for 3 seconds. Then the LCD screen flashes 3 times and the automatic calibration is finished. The tester comes with 3 sachets of calibration powder (calibrators: pH 4.00,