N - For solid particulates and non-oil aerosols
R - For solid particulates and degrading
oil-based aerosols. "Use Limitations"
P - For all solid particulates and
degrading oil-based aerosols
Three minimum efficiency levels: 95%, 99%, 99.97%
95% Minimum efficient - N95, R95, or P95
99% Minimum efficient - N99, R99, or P99
99.97% Minimum efficient - N100 or P100
Respirator CHARACTERISTICS, CAPABILITIES & LIMITATIONS
A respirator may not be able to help protect against all of the contaminants present in a particular work
environment. Specific limitations are stated on the approval labels and are included with use instructions
and limitations.These must be carefully reviewed for each respirator before use. Refer to respirator packaging
or operating manuals for specific information.