Illustration by Donald BarryNon-run combo cartridge APRs Reusable non-run chemical cartridge and particulate APRs are limited-fitting respirators Geared up with cartridges of activated carbon that adsorb gases and vapors, filters that mechanically protect against particulates from entering the facepiece, or combination cartridges With all the parts of both of those. https://damien6fsco.blogtov.com/12403463/the-5-second-trick-for-how-to-spray-pesticides