Penetration of respirator filters by an asbestos aerosol.

  title={Penetration of respirator filters by an asbestos aerosol.},
  author={L W Ortiz and Sidney C. Soderholm and Francisco Valdez},
  journal={American Industrial Hygiene Association journal},
  volume={49 9},
Five models of respirator filters were challenged with a chrysotile aerosol, and the asbestos fiber penetration of the media was measured in five experimental series simulating different environmental conditions. Penetration of the facial seal was not evaluated. The penetration of each filter was determined from the ratio of the downstream to upstream concentrations of airborne asbestos fibers as measured by the standard National Institute for Occupational Safety and Health (NIOSH) asbestos… CONTINUE READING

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