Efficacy of Selected Respiratory Protective Equipment Challenged with Bacillus subtilis subsp. niger

AUTOR(ES)

Johnson, B.

RESUMO

The efficacy of powered air-purifying respirators, surgical masks, dust/mist respirators, and high-efficiency respirators were tested with a biological aerosol under simulated breathing conditions. Protective ability ranged from 67 to 99.95%. The majority of penetration in negative-pressure respirators occurred at the face-mask interface rather than through the filter material.

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