@3M does not know the duration of the N95 masks it produces!https://twitter.com/matrixbjk/status/1240900182528667648?s=19 …
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@3M does not know the duration of the N95 masks it produces!https://twitter.com/matrixbjk/status/1240900182528667648?s=19 …
@3M does not know the usage times of the N95 masks it produces!https://twitter.com/3M/status/1241132605996752898?s=19 …
@3M sez "respirators may be reused over time with little risk of internal contamination, even after a week’s time, provided the respirator is carefully handled and stored (handled by non-filter components, e.g., straps)"
https://multimedia.3m.com/mws/media/409903O/respiratory-protection-against-biohazards.pdf …
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