Laboratory graphic LCD pH/ORP/ISE benchtop meter w/2 channel input, 5 point cali

Laboratory graphic LCD pH/ORP/ISE benchtop meter w/2 channel input, 5 point calibration,  choice of measurement units (ppb, ppm, molarity, weight/volume %), Relative mV measurements, user selectable “Outside Calibration” warning, user selectable “Calibration Time-out” warning, CAL Check™, Log on demand for up to 400 samples, range: pH -2.0 to 20.0; -2.00 to 20.00; -2.000 to 20.000 pH, mV ±2000 mV, ISE ±0.5% of reading (monovalent ions), ±1% of reading 9divalent ions), Temperature -20.0 to 120.0 °C (-4.0 to 248.0 °F)