P-Series filters are intended for removal of any
particle including oil-based liquid aerosols.
3M recommends that P-series filters should
be used and reused for no more than 40 hours
of use or 30 days, whichever occurs first, in
atmospheres that contain only oil aerosols unless the filter needs
to be changed for hygiene reasons, is damaged, or becomes
difficult to breathe through before the time limit is reached.
Good for certain organic vapors and particulates. Chlorine,
hydrogen chloride, and sulfur dioxide or chlorine dioxide or
hydrogen sulfide (escape only). Ammonia/methylamine,
formaldehyde (c) or hydrogen fluoride.