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A comment on Pfizer board member suggests end to mask, vaccine mandates. Parent comment

Re:Pfizer board member suggests end to mask, vaccine mandates by mindslight on Wednesday January 26, 2022 @01:32PM (#30089667)
The official guidance on my P100 3M 2297 filters is to replace them when breathing becomes hard or the nuisance organic vapor protection isn't working as well as you'd like. Everything I've found concurs that the particulate filtration does not diminish with time/use.
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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.
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