"Worst case" aerosol testing parameters. II : efficiency dependence of commercial respirator filters on humidity pretreatment

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      <subfield code="a">"Worst case" aerosol testing parameters. II</subfield>
      <subfield code="b">: efficiency dependence of commercial respirator filters on humidity pretreatment</subfield>
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      <subfield code="a">Previous studies have shown that relative humidity has a degrading effect on the performance of commercially available particulate air-purifying respirator filters. This study was done to evaluate the time-dependent effects of relative humidity pretreatment and the reduction of charge on filter penetration against a most penetrating "worst case" aerosol challenge</subfield>
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      <subfield code="a">American Industrial Hygiene Association journal</subfield>
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      <subfield code="g">Vol. 50, nº 5, May 1989 ; p. 265-270</subfield>
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