Chirkin AV, Reducing the harmful effects of polluted air at workplaces using respiratory PPE
“ But respirator certification test participants, in principle, can not simulate all the enormous variety of movements that make millions of workers, and the limited number of such test participants can not accurately simulate all the different worker’s faces (shape and sizes) . In addition, in the laboratory, participants wear respirators’ masks more slowly and carefully. Therefore laboratory efficiency RPD (during the certification) is significantly different from the protective properties in actual use in the workplace. This real efficiency was measured in the developed countries tenfold. ”
