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3 Layers AS NZS 1716 2012 standard mouth muffle USA

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Conforms to EN149:2001+A1:2009 and AS/NZS 1716:2012. Filter technology reduces inhalation to bring comfort wear. Corona Virus Disposable Mouth Muffle Face Mask (2.6) Face Mask 2/3 layers with elastic earloops or with ties 1. 2 layers or 3 layers pleated design 2. With fexible nose wire, Latex and fiber glass free 3. Softlining

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We have therefore in three places in Chapter 1 (pp. 3 and 33, and bibliography p. 52) stressed more strongly the importance of safety in the laboratory. Also, where possible, in Chapters 3 and 4 we draw attention to the dangers involved with the manipulation of some hazardous substances.

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