WHAT DOES "N95" RATING MEAN:

WHAT DOES "N95" RATING MEAN:

The different ratings in place for respirators indicate how well the mask would protect against oils and are rated as N, R, or P.
N - Not oil resistant
R - Resistant to oil
P - Oil Proof
So, here N means the mask is not oil resistant.

Masks ending with 95 have a 95 percent efficiency (Removes 95% of all particles that are at least 0.3 microns in diameter). Masks ending in a 99 have a 99(Removes 99% of particles that are at least 0.3 microns in diameter) percent efficiency. Masks ending in 100 are 99.97 percent efficient and that is the same as a HEPA quality filter.
So, in short, N95 masks are not oil-resistant masks that remove 95% of all particles that are at least 0.3 microns in diameter.

The Centers for Disease Control and Prevention (CDC) does not recommend that the general public wear N95 respirators to protect themselves from respiratory diseases, including coronavirus (COVID-19). The CDC recommends that members of the public use simple cloth face coverings when in a public setting to slow the spread of the virus since this will help people who may have the virus and do not know it from transmitting it to others.