同样都是N95，医用标准和非医用的filter是不同的
“Masks can filter particles as small as 0.007 microns – 10 times smaller than viruses, and much, much smaller than PM2.5. What’s more, they work surprisingly well, even while people are wearing them. Surgical masks are perform less well cheap but are cheaper and more readily available. Get the latest clean air tips!”
Surgical N95 respirators are designed to reduce but cannot eliminate the wearer’s exposure to airborne biological contaminants. They do not eliminate the risk of illness, disease, or death.
Form a tight seal over the mouth and nose.
Require fit-testing and must be adjusted to your face to provide the intended effectiveness of filtering 95 percent of particles with a mass median diameter of 0.3 micrometers.
