What is an N95 respirator/mask?
NIOSH certified N95 respirators/masks are designed to help provide respiratory protection for the wearer. The N95 respirator/mask has a filter efficiency level of 95% or greater against particulate aerosols free of oil when tested against a 0.3 micron particle. It is fluid resistant, disposable and may be worn in surgery. The “N” means “Not resistant to oil”. The “95” refers to a 95% filter efficiency. N95 respirator/mask with an exhalation valve may be used by the Health Care Worker. Patients, suspect or probable cases of SARS should not wear an N95 mask with exhalation valve, as this valve could disseminate the virus into the environment.
