... 0.01pH, 1Mv4.Temperature compensation ranger: 0~60C5.Basal error of electron cell: pH: ±0.01pH 6.mV: ... ±1mV± one word7.Basal error of instrument: ±0.02PpH± one word8.Input current ... cell: ≥1×1012Ω10.Temperature compensation error: ±0.01pH11.Repeatability error of electron cell: pH: ≤0.01pH ... 12.mV: ≤1mV 13.Repeatability error of instrument: ≤0.01pH14.Electron cell stability: ±0 ...