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MAP20071020312Crutchfield, Clifton D.A Feasibility study of quantitative respirator fit testing by controlled negative pressure / Clifton D. Crutchfield, Martin P. Eroh, Mark D. Van ErtSumario: The feasibility of using a direct measure of respirator leakage flow rate as a quantitative index of respirator face seal fit has been explored through the use of a new controlled negative pressure method. The method is based on exhausting air from a temporarily sealed respirator facepiece at a rate sufficient to generate and then sustain a constant negative pressure inside the facepiece while the wearer holds his breathEn: American Industrial Hygiene Association journal. - Akron, Ohio. - Vol. 52, nº 4, April 1991 ; p. 172-1761. Higiene industrial. 2. Contaminantes químicos. 3. Equipos respiratorios. 4. Mascarillas autofiltrantes. 5. Máscaras. 6. Métodos de control. 7. Tests. I. Eroh, Martin P.. II. Ert, Mark D. van. III. Title. IV. Título: American Industrial Hygiene Association journal.