6. Pressure plate and pressure membrane apparatus

6. Pressure plate and pressure membrane apparatus
    A pressure membrane apparatus is used to subject soils to matric potentials as low as 10,000 kPa. After application of specific potential to a set of samples, their soil water contents are determined gravimetrically. This important tool makes possible accurate measurement of water content over a wide range of matric potentials in a relatively shorter time. It is used, along with the tension plate, to obtain data to construct soil water characteristic curves.

Last modified: Tuesday, 10 April 2012, 10:36 AM