UltraBasic Portable Meter Kit UP-25A Model Only incl Manual & Power Supply (no electrode); pH//mV/Temp/Ion Modes, 0.00-14.00 pH Range, 0.01 pH Resolution, 0.005 pH Accuracy, 0.0-100.0 C Temp Range, 0.1 C Temp Resolution, 0.2 C Temp Accuracy, -1800.0-1800.0 mV Range, 0.1mV Resolution, 0.2mV or +/- 0.05% mV Accuracy, Relative mV Mode, 0-99900 Ion Range, 3 sig figs Ion Resolution, 0.34% Ion Accuracy