EVALUATION OF FACE MASK FILTERING EFFICIENCY USING HIGH-END SCANNING MOBILITY PARTICLE SIZER.

An advanced system for determination of face mask efficiency is developed and presented in this paper. It is based on a high-end scanning mobility particle sizer (SMPS), which was able to detect nanoparticles from the diameter of 10 nm up to 1000 nm in 129 equidistant channels. Two fitting installations for face masks were used: a mannequin doll head, to simulate realistic use of face mask and a tight-fit system which prevents the air leak. The SMPS-based system was able to determine mask efficiency for different particle sizes. [ABSTRACT FROM AUTHOR]