These may be absorbed through the skin or inhaled when you spray. Free N95 masks getting free N95 masks many individuals are asking whether their masks are disposable or recyclable. Fold china N95 folding face mask factories the National Institute for Occupational Safety and also Health ( NIOSH ) advises utilizing a NIOSH-certified respirator to secure against particles with a diameter of 5 micrometers or smaller. It's important to make sure that the store you want to go to actually sells N95 masks. Or are they simply over-hyped Halloween decorations? Fifth, check the KN95 mask's box for USAge instructions.