International Organization for Standardization (ISO)
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ISO 4920:2012
Scope
This International Standard specifies a spray test method for determining the resistance of any fabric, which might or might not have been given a water-resistant or water-repellent finish, to surface wetting by water.
It is not intended for use in predicting the rain-penetration resistance of fabrics, since it does not measure penetration of water through the fabric.
ISO 4920:2012 Referenced Document
ISO 139 Textiles — Standard atmospheres for conditioning and testing AMENDMENT 1
ISO 4920:2012 history
2012ISO 4920:2012 Textile fabrics - Determination of resistance to surface wetting (spray test)
1981ISO 4920:1981 Textiles; determination of resistance to surface wetting (spray test) of fabrics