Q. Are 3M dust masks certified?

Answer

Yes. 3M masks are approved by United States research agency focused on the study of worker safety and health NIOSH (National Institute for Occupational Safety and Health ) for helping reduce inhalation exposures to certain airborne biological particles (examples: mold Bacillus anthracis Mycobacterium tuberculosis) but cannot guarantee to eliminate the risk of contracting the infection illness or disease.