The Portable EC/resistivity/TDS/NaCl auto ranging meter from Hannah Instruments is a professional-grade handheld instrument engineered for reliable water quality analysis in the field or lab. Just like the edge EC, 230 V Meter and edge dedicated EC, 230 V Meter, the Portable EC/resistivity/TDS/NaCl auto ranging meter from Hannah Instruments is waterproof (IP67) and delivers auto-ranging measurements of electrical conductivity (EC), total dissolved solids (TDS), resistivity, salinity (% NaCl and practical scales), and temperature with a single, easy-to-use device. Equipped with a quick-connect four-ring conductivity probe and automatic probe recognition, it covers an expanded conductivity range up to 1000 mS/cm (400 mS/cm temperature-compensated) and supports customizable calibration and temperature compensation settings, while logging up to 1000 stored readings, and PC connectivity via USB makes documentation and reporting simple.