BS 4555(1970) : 1970已作廢
SPECIFICATION FOR HIGH EFFICIENCY DUST RESPIRATORS
出版：British Standards Institution
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基本信息
標準編號： BS 4555(1970) : 1970
發布時間：1970/1/1 0:00:00
標準類別：Standard
出版單位：British Standards Institution
標準頁數：12
標準簡介
Gives requirements for respirators for use in areas where highly toxic particulate materials are handled. Written in terms of metric units, it gives inch equivalents which are equally valid. Covers construction, design, facepiece, filter, harness, speech transmission, connecting fittings, performance requirements and marking.
