Historical
DIN EN 20811:1992
Determination of resistance of textile fabrics to water penetration; hydrostatic pressure test (ISO 811:1981)
The document specifies a hydrostatic pressure method for determining the resistance of fabrics to penetration by water. The method is primarily intended for dense fabrics, e.g. ducks, tarpaulins and tentings.
Deutsches Institut für Normung [din]