test in which the fabric to be tested is pulled taut and sealed in a controlled chamber, and water is then slowly poured into a graduated cylinder placed on the fabric (which adds pressure to the surface), and once this pressure becomes too great, water begins to permeate through the fabric, katse, milles katsetatav kangas tõmmatakse pingule ja suletakse kontrollitud kambrisse ja seejärel valatakse vesi aeglaselt kangale asetatud skaalaga silindrisse ehk kukrusse (mis lisab pinnale survet) ning kui see rõhk muutub liiga suureks, hakkab vesi kangast läbi imbuma