EN 16523-2:2015/PRA1:2017 材料对化学渗透的抵抗性的判定.第2部分:在持续接触的条件下气态化学品的渗透 包含修改件PRA1,2017
Determination of material resistance to permeation by chemicals - Part 2: Permeation by potentially hazardous gaseous chemicals under conditions of continuous contact
Introduction This draft standard is based on European discussions in which the UK has taken an active part. Your contents on this draft are welcome and will assist in the preparation of the consequent British Standard. Comment is particularly welcome on national@ legislative or similar deviations that may be necessary. Even if this draft standard is not approved by the UK@ if it receives the necessary support in Europe@ the UK will be obliged to publish the official English Language text unchanged as a British Standard and to withdraw any conflicting standard.