... calibration. Functions,LCD display, English operation system Automatic and manual temperature compensation, self-calibration, and self-calculation of electrode ... range,-5.0~105.0°CpH Resolution,0.1/0.01/0.001 mV range,0.1Temperature range ,0.1°CpH Accuracy,±0.005±1 ... range)Temperature Accuracy±0.3°C±1 bitStability, (±0.005pH±1 bit)/3hTemp compensation,Manual/Auto(-5.0~105.0)°CCalibration,May select ...