Portable EC/TDS/Salinity meters are available in multiple designs and features.
The following portable meters use the potentiometric (four ring) version of probes. This technology allows for a wide range of measurement using a single probe. Portable meters available include versions with manual calibration and manual selection of ranges and versions with automatic calibration and automatic range selection. Portables are available with multiple measuring modes including EC, TDS, salinity, and resistivity. Meters include both those with automatic calibration and others with manual calibration using trimmers.