The fit of your face mask has a lot to do with how effective it is — the tighter the better for filtering your breath and keeping others safe from viral particles, including those of COVID-19. That ...
N95, KN95, KF94, FFP2, M95i, M95c, M94k — the list is growing. If you have been shopping for high filtration masks, then this alphabet soup sounds familiar. With winter break over, COVID and other ...
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