Magnetic stirrer with Conductivity, TDS, Salinity, pH, mV, and Temperature measurements. The WQ510 is a 6-in-1 meter capable of measuring pH, ORP, conductivity, TDS, salinity, and temperature of liquids and semi-solids. The unit features a 30-, 60-, and 120-minute timer or continuous stirring, 2 or 3 point pH calibration, 1-point conductivity calibration, and automatic temperature compensation. This unit features a large backlit dual display, and the ability to store/recall 150 readings, as well as capture readings directly to a PC via the built-in USB interface. The WQ510 comes with pH glass electrode, Conductivity cell, Temperature probe, pH calibration solutions (4 and 7pH), Conductivity calibration solutions (1413µS and 12.88mS), plastic burette, polishing paper, electrode clamp and rod, software and USB cable, AC adapter, stirrer, and user manual.