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DIN EN 149:2009
Respiratory protective devices - Filtering half masks to protect against particles - Requirements, testing, marking; German version EN 149:2001+A1:2009
This European Standard specifies minimum requirements for filtering half masks as respiratory protective devices to protect against particles except for escape purposes. Laboratory and practical performance tests are included for the assessment of compliance with the requirements.
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Deutsches Institut für Normung [din]
Deutsches Institut für Normung [din]