Personal protection against infectious or toxic aerosols is a growing area of concern
among many different occupational groups. Selection of appropriate respiratory protection
should be based upon the level of risk present and the degree of protection afforded by
the different types of protective masks available. In this study we have determined the
relative protection factors for various commercial and military respiratory protective
devices when challenged with a polydispersed submicron to micron sized particulate
aerosol.
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