The N95 is the preferred 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 exposed to oil aerosols:

N95, N99, & N100. These filters will not be to be used with oil aerosols. These ought to be used in environments exposed to particulates which do not contain oil. In many cases, the n- respirators will be reused multiple times.

R95, R99, & R100. These filters are oil resistant. The r- respirators can be used in atmospheres containing particulates any solid or liquid hazard together with oil-primarily based hazards. These are one-time use masks.

P95, P99, & P100. These filters are oil proof. These respirators can be utilized in any environment exposed 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: ninety five%, 99%, and a 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 different 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 against 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 under your ears.

3. With each palms, mold the metal nosepiece to the shape of your nose.

4. To test fit, cup each arms over the respirator and exhale vigorously. If air flows round your nostril, tighten the nosepiece: if air flows across the edges of the respirator, reposition the headbands to fit higher and test once more until there is no air leakage.

Earlier than choosing the proper mask, it can be suggested that you just speak with experienced industrial safety personnel about an evaluation of your particular environment.

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