Re:Pfizer board member suggests end to mask, vaccine mandates
by blub on Wednesday January 26, 2022 @02:37PM
(#30090566)
AFAIK some filters are mechanical and others require the electrosatic charge to reach their stated performance. Half-masks or full face masks are typically of the former kind, while smaller masks of the latter kind.
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Re:Pfizer board member suggests end to mask, vaccine mandates
by mindslight on Wednesday January 26, 2022 @03:08PM
(#30090981)
The 2297 and 2097 filters (at least) are made with electrostatic media. The 2297 touts "Advanced Electret Media" for easier breathing.