... , dual parameter 2. Automatic buffer recognition and two-point calibration table PH meterFunction, Large screen, LCD display, dual parameterAutomatic buffer recognition ... .1°CAccuracy ,pH ±0.01±1 bit mV ±0.1%(FS) Temperature, ±0.3°C±1 bitStability (0.01pH±1 bit ... , 4.00,6.86,9.18Display LCD, dual parameterISO certified table PH Meter