And are M Series face masks effective against Covid? We break down what you need to know, before making any purchasing decision.
Both M Series masks and KN95 masks are made from multiple layers, usually at least 4 layers, of polypropylene material and are designed to be worn over the mouth and nose. Both masks must filter out and capture 95 percent of tiny 0.3 micron particles in the air (hence the “95” in the names, but additionally, M Series series masks have five layers).