The pandemic propelled 3M’s N95 to international stardom. What’s next?
The 3M application engineer in the personal safety division has done this test many times before at the company’s fit-testing ...
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The pandemic propelled 3M’s N95 to international stardom. What’s next?
N95 respirators get tested in a fit test lab at 3M Center in Maplewood. (Alex Kormann/The Minnesota Star Tribune) Few objects symbolize the pandemic as well as the N95. Impossible to find until ...