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Filtration Efficiency Measurements of a Filtering Facepiece Material as a Function of Particle Size
Ždímal, Vladimír ; Rupová, M. ; Kovářová, E. ; Zíková, Naděžda
A detailed size-dependent filtration efficiency measurements of a filtering facepiece material have been performed in this work over the range of particle mobility diameters 20-450 nm. It was not the aim of this work to repeat the standard test of the filtration halfmask according to ČSN EN 149+A1. Instead, we have focused on elaborating a procedure enabling us to assess how well the facepiece is suited for usage in working environments with elevated concentrations of aerosol nanoparticles.

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