The Orion 162A offers the convenience of measuring in conductivity in the range of 0 to 500,000 µS/cm, resistivity, total dissolved solids (TDS), or salinity simply by pressing a single key to toggle between the modes. Calibrate in one step with AUTO-CAL™ or up to five points with the DirectCal™ option. The Orion 162A uses The Orion 4-electrode DuraProbe™ cells or 2-electrode cells both with integrated thermistors. Temperature compensation options include linear with adjustable temperature coefficient, non-linear for natural waters, non-linear for ultrapure water. A variety of probes are available for optimal sample measurement.