Characteristics:1. Manual temperature compensation2. two-point calibrationSpecifications1. Measurement range PH:(0.00-14.00)pHMV:(-1400 1400)mV2. Accuracy PH:±0.05PH,mV:±1%(FS)3. Input Impedance: 3 X1011 W4.Temperature Compensation Range:0-60℃5.Accuracy :±0.1 Ph