Disposable respirator masks have received increased attention as of late with the spread of the H1N1 flu virus, though they have long been used for other functions such as occupational safety. N95 refers to a National Institute for Occupational Safety and Health (NIOSH) evaluation that is assigned to masks that meet a specified minimum standard for particle transmission.
The N95 respirator mask is designed to filter up to 95% of airborne particles 0.3 microns or larger that may otherwise directly input the mouth and nose of the wearer. These masks may also be worn by people that have a infectious disease to prevent particles from leaving the mouth and nose of the wearer and putting others in danger.
While these masks don't protect against particle transmission with 100% accuracy, they can be effective in preventing the spread of infection.N95 masks can be bought together with our without a valve to facilitate easier breathing. Optimal protection is attained while the respirator mask fits snugly to the surface, covering the nose and mouth without even leaving open spaces along the border.
Respirator masks must be fitted correctly to the wearer and not be blocked by facial hair or jewelry. A badly fitted respirator mask has greater potential to permit air pollutants to enter through openings along the borders of the mask, supplying lower levels of protection from the inhalation or spread of contaminants than a nicely fitted one.
Respirator masks are frequently used for occupational safety, and are especially common in industrial and health care facilities. Masks used at the office must be NIOSH-approved, meaning they meet minimum standards put forth by the National Institute for Occupational Safety and Health.
The intended purpose should be kept in mind when purchasing respirator masks. Different types are intended for specific purposes and offer varying degrees of security. Another consideration is if the mask includes latex, an allergen for some people. Latex free N95 respirator masks can be found, and will be marked as such.