DIN EN ISO 4638
Polymeric materials, cellular flexible - Determination of air flow permeability (ISO/FDIS 4638:2026); German and English version prEN ISO 4638:2026
Weichelastische Schaumstoffe - Bestimmung der Luftstromdurchlässigkeit (ISO/FDIS 4638:2026); Deutsche und Englische Fassung prEN ISO 4638:2026
Responsible national committee
NA 062-04-37 AA - Testing of flexible and rigid cellular materials
Responsible european committee
Responsible international committee
ISO/TC 45/SC 4/WG 8 - Flexible and semi-rigid cellular material