About surgical masks and surgical N95 respirators
Surgical masks and surgical N95 respirators are disposable devices that cover the mouth and nose during medical procedures. They help protect the caregiver and patient against microorganisms, body fluids, and small particles in the air.
Surgical masks and surgical N95 respirators are regulated by the Food and Drug Administration (FDA). FDA evaluates the performance of these devices in areas including fluid resistance and filtration efficiency to ensure that they are at least as safe and effective as similar devices already on the market. FDA encourages manufacturers to follow specific performance standards for their masks, and FDA also requires that these products be produced using good manufacturing practices.
Respirators may also be certified by NIOSH (the National Institute for Occupational Safety and Health) in accordance with regulations in 42 CFR part 84. When a mask is both cleared by FDA as a surgical mask and certified by NIOSH as an N95 respirator mask, FDA calls it a "surgical N95 respirator."
Surgical masks can help in the event of a Volcano erupting. They help protect you from dust that can be created by a Volcanic eruption.
More about N95 Masks
N95 Masks
N95 masks are commonly called “particulate
respirators”. “N” means ‘Not resistant to oil’,
“95” refers to a 95% filter efficiency. They
offer protection by filtering the air before it
enters the respiratory tract. N95 masks are
designed to filter 95% of particles (particulate
aerosols free of oil) that are 0.3 microns in size
or larger. They effectively provide protection
from airborne contaminants and pathogens
such as tuberculosis, chickenpox, and measles | 
