... , dual parameter 2. Automatic buffer recognition and two-point calibration table PH meterFunction, Large screen, LCD display, dual parameterAutomatic buffer recognition ... mV(ORP)It is equipped with pH combination electrode and T-818-B-6 temperature electrode.Specifications,Parameter,pH / mV(ORP ... , 4.00,6.86,9.18Display LCD, dual parameterISO certified table PH Meter