The KN95 may be the most widely used sequence of particulate respirator masks that satisfy U.s. governing administration criteria. The facial area masks are analyzed to lessen exposure to airborne contaminates by NIOSH – the National Institiute for Occupational Protection and Wellness. NIOSH has nine full approval courses, Buy KN95 Masks Online structured by oil compatibility and filter performance.
The letter signifies how the filter exams in environments uncovered to grease aerosols:
KN95, N99, & N100. These filters are not to be used with oil aerosols. These should be used in environments exposed to particulates which do not contain oil. In many cases, the n- respirators can 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 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 exposed to hazardous particulates. The p- respirators are subject to time of use limitations.
The filter performance number refers to the percentage of airborne particulates that were removed in testing: 95%, 99%, and 100%. 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 different sizes, and a well fitting mask is vitally important. When test-fitting an KN95 mask or other particulate respirator mask, follow these easy steps:
1. Press the mask (respirator ) firmly against the deal with 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 bottom headband over the head and position below your ears.
3. With both hands, mold the metal nosepiece to the shape of your nose.
4. To test fit, cup both hands over the respirator and exhale vigorously. If air flows around your nose, tighten the nosepiece: if air flows around the edges of the respirator, reposition the headbands to fit better and test again until there is no air leakage.