The N95 is the most popular 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 nine 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 uncovered to grease aerosols:
N95, N99, & N100. These filters aren’t for use with oil aerosols. These must be utilized in environments uncovered to particulates which do not comprise oil. In many 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 stable or liquid hazard including oil-based mostly hazards. These are one-time use masks.
P95, P99, & P100. These filters are oil proof. These respirators can be used in any environment uncovered to hazardous particulates. The p- respirators are subject to time of use limitations.
The filter effectivity number refers to the proportion of airborne particulates that have been removed in testing: ninety five%, 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 also come in numerous sizes, and a well fitting mask is vitally important. When test-fitting an N95 mask or other particulate respirator mask, follow these simple steps:
1. Press the mask (respirator ) firmly towards 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 below your ears.
3. With both palms, mold the metal nosepiece to the form of your nose.
4. To test fit, cup each hands over the respirator and exhale vigorously. If air flows round your nostril, tighten the nosepiece: if air flows around the edges of the respirator, reposition the headbands to fit better and test again till there is no such thing as a air leakage.
Earlier than selecting the best mask, it can be steered that you simply speak with skilled industrial safety personnel about an evaluation of your particular environment.