You may have heard the term N95 but what does it mean and why are some masks rated higher than others?
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Unknown You may have heard the term N95 but what does it mean and why are some masks rated higher than others?
from BBC News - Technology https://ift.tt/2zjKz1v
https://ift.tt/eA8V8J May 26, 2020 at 05:47AM https://ift.tt/2yfVyVV
Tuesday, May 26, 2020
Find out which masks off the most protection and why
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