Search Results for: Filtering machinery
air delivery rate), a metric required to be noted on the box. of course, there should be no solid fuel combustion sources inside the house: cigarettes, fireplaces, incense, or candles, for example. preferably, ever. if you have to go outdoors, wear a n or n mask. an n mask is percent efficient at filtering
when worn over a beard because of the lack of a seal. importantly, they must fit very tightly, to the point of being uncomfortable, to work well. do not exercise outdoors. exercise increases the amount of air inhaled over a minute and strenuous exercise leads to mouth breathing that bypasses the filtering...
https://www.berkeleywellness.com/healthy-community/environmental-health/article/staying-safe-when-air-quality-poor