Smart Air is a company that promotes data-backed air filters as a solution to indoor particulate air pollution. They’ve just released the results of their independent testing of DIY face mask materials people have been using to make PPE’s.
They tested over 30 different materials ― including bra pads, coffee filters, pillow cases, electrostatic cloths, cotton T-shirts, wool, bed sheets, polyester, bandanas and more!
Smart Air tested the materials for their effectiveness in filtering coronavirus-sized microparticles, as well as their breathability. Because while some materials may test high for filtration, they test low for breathability – ’cause you kinda’ need to breathe.
The TOP 5 BEST materials Smart Air tested are…
Denim / Canvas / Bed Sheets / Shop Towels and Paper Towels
They used something called a Henderson apparatus, in which a fan blows air and particles through the mask material and then measured the amount and size of the particulates to come through. Sounds simple.
That’s the best … how about the worst? According to the study, “some materials were only slightly better than nothing.” The bandana, neck-warmer, scarves, cleaning cloths and 100% cotton T-shirt (one layer) all captured less than 10% of small particles.
The takeaway of all this… Masks do not replace social distancing. While DIY face masks may be useful in situations like grocery stores and pharmacies where you cannot always stay six feet away from people, masks should not be used as a replacement for social distancing.
