Air filtration of submicron virus aerosols.

Abstract
A new method is described for evaluating air filters with submicron aerosols. The method is unique in that the aerosols were viable, highly concentrated, and composed entirely of submicron particles (0.1u NMD [number median diameter]). Tests were conducted to compare air filters in removing submicron T1 phage aerosols and bacterial aerosols of Bacillus subtilis var. niger spores (1u NMD).

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