General laboratory bench pH meter, which is suitable for measuring moderate ionic strength solutions, such as surface water pHMeasuring rangeResolutionAccuracyInput currentInput impendanceStabilityTemp. compensation range(-1.99 ~ 19.99)pH0.1/0.01/0.001 pHMeter:±0.002 pH, connect meter with electrode:±0.01pH≤1×10-12 A≥3×1012 Ω±0.001 pH/3h(0 to 100) °C(automatic or manual)mVMeasuring range(mV/ORP/ ...