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MAP20071021780Quantification of bypass leakage in two different filter cassettes during welding fume sampling / David Johannes Van den HeeverSumario: The objective of this study was to quantify such bypass leakage, using 37-mm diameter cellulose nitrate filters in a laboratory environment, on two different dust-collecting cassettes. A further objective was the quantification of the percentage dust loss correlated to the vacuum loss resulting from bypass leakageEn: American Industrial Hygiene Association journal. - Akron, Ohio. - Vol. 55, nº 10, October 1994 ; p. 966-9691. Higiene industrial. 2. Muestreos. 3. Ambiente de trabajo. 4. Humos tóxicos. 5. Métodos de control. 6. Filtros. 7. Métodos cuantitativos de medida. I. Reist, Parker C.. II. Title. III. Título: American Industrial Hygiene Association journal.