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Vern's Stories : N95 vs Coffee Filter
Vern's Stories
fredhorn37@gmail.com
Wednesday, May 13, 2020
N95 vs Coffee Filter
Which is a better face mask? N95 or a coffee filter.
Smart Air Filters blog
has an article discussing various materials to make diy masks from.
Here is the link to the article
and a chart from the article is below.
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