Comparative analysis of the chosen properties of filtrating type protective masks

Abstract

The results of comparative experimental testing of different filtering masks are presented in this study. Some of the most important functional properties have been tested on available models of Italian, French, British, Canadian, Swiss, American, and three models of Serbian military protective masks (M3 of the latest generation, as well as M2, and M2FV models of the previous generation). The mask models have been tested on protection factor, dynamic resistance of the exhaust valve and its static permeability, the overall inhalation resistance of protective masks, field of view and optical properties, by standardized testing methods. Based on the experimental results obtained, it can be concluded that the Serbian mask M3 is approximately at the same quality level as tested foreign masks, and above Serbian protective masks of the previous generation marked as M2F and M2FV.

Defining the ideality of the protective masks by the mathematical modeling method

“…determining the inner permeability level of the protective mask. The mean value of face piece's inner permeability, tested on 10 face pieces and 10 examinee according to a defined matrix, using sodium chloride aerosol, must not be more than 4×10 -2 % [9,10]. During the comparative quality testing of different protective masks, the protective factor has been measured on: Serbian protective mask M2FV, size M (middle) and -Serbian protective mask M3, size M. The protection factor of protective masks has been measured by a standard test [11].…”