which strongly emphasise fit and require a fit test to ensure a secure seal. In contrast, N95 masks follow US standards, which do not mandate a fit test. This makes them more universally ...
N95 masks are designed to have a tight fit to the user's face and efficient filtration of airborne particles. Since it is a government-regulated standard, a company can't release a mask and label ...
The only difference between N95 and KN95 masks is the standards used to test efficiency, as KN95s are produced by different countries. Vance and her colleagues have been testing N95 and KN95 masks ...