Measuring Water Content in Soil-less Media Uing ECH2O Probes (13395-00 AN)

January 10, 2007 by Colin S. Campbell, Douglas R. Cobos, Brody L. Teare, Jeffrey E. Ritter

• Products:
  • Soil Moisture Sensors,
  • Sensors

Since the introduction of the ECH₂O soil moisture probe, there has been considerable interest in using them to measure volumetric water content of soil-less media such as potting soils, rockwool, and perlite. While it was possible to measure volumetric water content with the EC-10 and EC-20, their insensitivity to changes in water content above about 50% volumetric water content (VWC) made their use difficult in high porosity media.

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