HEPAs are air filters often used in air purifiers or central air systems to clean indoor air. They’re made from a mat of randomly aligned fibers that are usually made from polypropylene (PP) or fiberglass. That fact has made some people afraid of HEPA filters. There’s a controversy over whether fiberglass particles can cause lung […]
Tag: synthetic fibers
What Are N95 Masks Made From?
N95 masks made from synthetic plastic fibers are most common. These plastic fibers are similar to the fibers in synthetic and polyester shirts many people wear. N95 Masks Made From Synthetic Plastic For example, let’s take the 3M 9332 masks that I wear in Beijing. Technically this is an N99 (FFP3) mask, but the idea is […]
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