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Seção: ArtigosTítulo: Loading and filtration characteristics of filtering facepieces / C.C. Chen, M. Lehtimäki and K. WillekeAutor: Chen, C.C.Notas: Sumario: The present study investigated why respirators of the same category perform so differently. The degradation of colection efficiency by aerosol loading was also investigated. Some filtering facepieces of a higher performance category are made up of several layers of the same material used for a lower category filtering facepiece. This paper have investigated the cumulative effect of multiple filtration layers on pressure drop and filtration efficiencyRegistros relacionados: En: American Industrial Hygiene Association journal. - Fairfax, Virginia. - Vol. 54, nº 2, February 1993 ; p. 51-60Materia / lugar / evento: Higiene industrialEnsayosMascarillas autofiltrantesEquipos respiratoriosFiltrosContaminantes químicosAerosolesContaminación atmosféricaOtros autores: Lehtimäki, Matti Willeke, Klaus Títulos secundários: Título: American Industrial Hygiene Association journal Outras classificações: 872Direitos: In Copyright (InC)