Proper respirator fit is the foundation of effective respiratory protection. Even the highest-quality respirator cannot protect a worker from hazardous contaminants if it does not seal correctly to ...

Researchers have tested a variety of popular hacks for improving the fit of KN95 and surgical masks, and found that while some hacks do improve fit, they can also come at the cost of the wearer’s ...

New research: 54% of adults fail N95 fit tests without knowing it, raising questions as wildfire smoke reaches ...