ISO 15496:2004 describes a comparatively simple method for testing the water vapour permeability of textiles that will provide the manufacturer with a clearly recognized method for quality control within the plant. It is not applicable for classifying the water vapour resistance of textiles against values relating to physiological effects specified in product standards, and particularly not those relating to personal protective equipment.
BS EN ISO 15496:2004 history
2018BS EN ISO 15496:2018 Textiles. Measurement of water vapour permeability of textiles for the purpose of quality control
2004BS EN ISO 15496:2004 Textiles - Measurement of water vapour permeability of textiles for the purpose of quality control