It is suitable for geosynthetic material filter layer test, to determine the permeability coefficient and permeability ratio of soil and geotextile system and its interface under certain water flow conditions, as well as to determine the mud content of geotextile, to judge that geosynthetic material is used as a kind of soil filter Layer, whether there will be unallowable clogging.

JTG E50-2006, SL/T 235-2012, etc.