The N95 is the most well-liked series of particulate respirator masks that meet United States government standards. The face masks are tested to reduce exposure to airborne contaminates by NIOSH — the National Institiute for Occupational Safety and Health. NIOSH has 9 total approval classes, N95, N99, N100, R95, R99, R100, P95, P99, P100 organized by oil compatibility and filter efficiency.
The letter signifies how the filter tests in environments exposed to grease aerosols:
N95, N99, & N100. These filters should not to be used with oil aerosols. These ought to be used in environments uncovered to particulates which don’t include oil. In lots of cases, the n- respirators could be reused a number of times.
R95, R99, & R100. These filters are oil resistant. The r- respirators can be utilized in atmospheres containing particulates any solid or liquid hazard including oil-primarily based hazards. These are one-time use masks.
P95, P99, & P100. These filters are oil proof. These respirators can be used in any surroundings uncovered to hazardous particulates. The p- respirators are topic to time of use limitations.
The filter efficiency number refers to the proportion of airborne particulates that had been removed in testing: 95%, 99%, and one hundred%. If a mask is NIOSH approved then it will have a stamp of approval class printed on the respirator.
NIOSH approved masks additionally come in numerous sizes, and a well fitting mask is vitally important. When test-fitting an N95 mask or other particulate respirator mask, comply with these simple steps:
1. Press the mask (respirator ) firmly in opposition to the face with the outside nosepiece on the bridge of your nose.
2. Stretch and position the top headband on the back of your head above your ears. Stretch the underside headband over the head and position beneath your ears.
3. With each palms, mold the metal nosepiece to the shape of your nose.
4. To test fit, cup each palms over the respirator and exhale vigorously. If air flows round your nose, tighten the nosepiece: if air flows across the edges of the respirator, reposition the headbands to fit higher and test again until there isn’t a air leakage.
Earlier than choosing the proper mask, it can also be steered that you simply speak with experienced industrial safety personnel about an assessment of your particular environment.
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