EN 149: 2001 + A1:2009
Respiratory Protective Devices – Filtering half masks to protect against particles
European Standard for filtering half-masks. It contains laboratory tests to check the conformity with resistance to impacts, to cleansers and disinfectants, to temperature to flame and with respiratory resistance. With A!:2009 amendment, filtering dust masks are now classified as either single use/single shift (NR) or reusable/more than 1 shift (R).
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