This standard specifies a wet test method for determining the resis ance of a fabric, which may or may not be water resis ant or have received a water repellent treatment, to surface wetting with water . It is not intended to assess resis ance to rain penetration, since it does not measure the penetration of water through the fabric.
NBN G 55-021-1988 history
1988NBN G 55-021-1988 Textile. Determination of surface moisture resistance. watering method