How to check if N95 respirator is real: signs of counterfeit masks

N95 masks should have the "NIOSH" logo or acronym in block letters printed on the outside. The markings on the outside of an N95 respirator are key — a blank N95 is a red flag that it’s inauthentic. First, make sure that the mask has the “NIOSH” logo or acronym in block letters, which indicates that it’s been approved by National Institute for Occupational Safety and Health, according to the CDC. Check that NIOSH is spelled correctly. Source: How to check if N95 respirator is real: signs of counterfeit masks