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Measurement of the leakage and fit factor of a filtering facepiece by continuous monitoring of pressure pulsations

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      <subfield code="a">Brown, R.C.</subfield>
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      <subfield code="a">Measurement of the leakage and fit factor of a filtering facepiece by continuous monitoring of pressure pulsations</subfield>
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      <subfield code="a">A novel method for measuring the fit factor of filtering facepiece respirators is described. Measurement is made by the continual monitoring of the pressure produced by a volume of air injected into the respirator cavity, and withdrawn so that the added volume varies sinusoidally with time</subfield>
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      <subfield code="a">Equipos respiratorios</subfield>
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      <subfield code="0">MAPA20080619831</subfield>
      <subfield code="a">Mascarillas autofiltrantes</subfield>
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      <subfield code="0">MAPA20080543969</subfield>
      <subfield code="a">Filtros</subfield>
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      <subfield code="a">Vaughan, Nicholas P.</subfield>
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      <subfield code="a">American Industrial Hygiene Association journal</subfield>
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      <subfield code="t">American Industrial Hygiene Association journal</subfield>
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      <subfield code="g">Vol. 54, nº 8, August 1993 ; p. 409-416</subfield>
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