Flexible sheets for waterproofing. Plastics and rubber sheets for roof waterproofing. Methods for exposure to liquid chemicals, including water Ingestion-build-137917 BS EN 62047-4 specifies the

BS EN 62047-4 specifies the test method and test procedure for micro-electromechanical systems used in semiconductor devices

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BS 4868 specifies requirements for material

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Flexible sheets for waterproofing. Plastics and rubber sheets for roof waterproofing. Methods for exposure to liquid chemicals, including water Ingestion-build-137917 BS EN 62047-4 specifies the1 Scope This European Standard specifies a method of exposing test specimens of plastic and rubber sheets for roofing, free from all external restraint, to liquid chemicals (including water), and methods for determining the changes in properties resulting from such exposure.