In water-limited areas, salt management is a serious concern. In these areas, monitoring salt levels can be as important as monitoring soil moisture. The 5TE allows you to measure salt levels through bulk electrical conductivity.
EC measurements require good contact between the stainless steel electrodes on the sensor, and the soil. Because of large air spaces in potting soil and soilless media, the 5TE cannot be used accurately in potting soils or soilless substrates. However, the new GS3 Soil Moisture, Temperature, and EC sensor is designed specifically for use in these media.