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An Analytical Method for Respirator Performance Prediction Utilizing the Quantitative Fit Test (QNFT).
NIOSH 1980 Sep:489-505
An analytical method for evaluating the magnitude of the safety factor in respirator performance is presented. The method utilizes a Quantitative Fit Test to measure a Fit Factor which is representative of the ratio of breathing to fit leakage flow rates. Equivalence equations for concentration and leakage measurements are derived and the dependence of these equivalence relationships on filtration efficiency, breathing, resistance, and variability of fit are examined.
Analytical-methods; Respiratory-protective-equipment; Respiratory-protection; Safety-equipment; Mechanical-properties;
Papers from the NIOSH International Respirator Research Workshop, September 9-11, 1980, Division of Safety Research, NIOSH, Morgantown, WV
Page last reviewed: September 2, 2020
Content source: National Institute for Occupational Safety and Health Education and Information Division