Exactly how are actually they helped make? KN95 the difference between KN95 and N95 masks the Nationwide Institute for Work Safety and security and also Wellness ( NIOSH ) has actually suggested that every person must put on an appropriately equipped NIOSH-approved N95 mask when handling negative air top quality. ASTM Mask ASTM 3 vs N95 in terms of COVID-19, how effective are face masks? Sanding.sweeping.sewing.bagging.or processing minerals. Let's take a look at the science behind these masks to find out. If you're prepared, you could save your life in the event of a catastrophe or virus outbreak by wearing an N95 mask to prevent airborne particles from entering your body through your mouth and nose.