N95 Respirator Mask Types: Basic Information

N99 mask

The N95 is the most popular compilation of particulate respirator masks that meet United States government standards. The eye masks are tested to cut back experience of airborne contaminates by NIOSH - the country's 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.

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The letter signifies how the filter tests in environments subjected to oil aerosols:

N95, N99, & N100. These filters should not supply with oil aerosols. These should be utilized in environments exposed to particulates which don't contain oil. On many occasions, the n- respirators may be reused several times.


R95, R99, & R100. These filters are oil resistant. The r- respirators works extremely well in atmospheres containing particulates any solid or liquid hazard including oil-based hazards. These are one-time use masks.


P95, P99, & P100. These filters are oil proof. These respirators can be used in any environment encountered with hazardous particulates. The p- respirators are at the mercy of use of use limitations.

The filter efficiency number refers back to the area of airborne particulates which are removed in testing: 95%, 99%, and 100%. In case a mask is NIOSH approved it will have a stamp of approval class printed for the respirator.

NIOSH approved masks are also made of sizes, plus a well fitting mask is important. When test-fitting an N95 mask or other particulate respirator mask, follow these easy steps:

1. Press the mask (respirator ) firmly against the face with the outside nosepiece for the bridge of your respective nose.

2. Stretch and squeeze top headband about the back of your respective head above your ears. Stretch underneath headband in the head and position within your ears.

3. With hands, mold the metal nosepiece to the form of onto your nose.

4. To evaluate fit, cup your hands over the respirator and exhale vigorously. If air flows around onto your nose, tighten the nosepiece: if air flows round the edges of the respirator, reposition the headbands to adjust to better and test again until there isn't any air leakage.

Before choosing the best mask, additionally it is suggested that you speak with experienced industrial safety personnel about a assessment of one's particular environment.