BS EN 405:1993被替代
Respiratory protective devices. Valved filtering half masks to protect against gases or gases and particles
出版：British Standards Institution
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基本信息
标准编号： BS EN 405:1993
发布时间：1993/2/15 0:00:00
标准类别：Standard
出版单位：British Standards Institution
标准页数：28
标准简介
Provides performance requirements, test methods and marking requirements for valved filtering half masks incorporating either gas or combined gas and particle filters.
标准备注
© British Standards Institution 2013
替代本标准的新标准
