... 3 points for pH using USA or NIST buffer sets; Up to 5 points for ion ... concentration measurement:: Auto-buffer recognition eliminates calibration mistakes and ensures calibration ... METERS INCLUDED:pH and ORP Electrode, pH Standard Buffer, Temperature Probe, Power Adapters, Electrode Holder ... ~212oF, Automatic or Manual Built-in Ion modeNa+, Ag+, K+, NH3+, CL-, F-, Ca2+, No3-, Pb2+, I ...