Filtration efficiency
FFP 2 filtering face piece respirators can be used for respiratory protection against various non-oily airborne contaminants. They are extremely effective (94-99%) against tiny particulate matter of less than 0.3 and 2.5 microns in diameter (PM0.3 and PM2.5 respectively) among which are many infectious agents. For the purpose of protecting yourself from influenza viruses (SARS, avian flu, coronavirus, etc.), hereby the AA UNION MASK FFP2 model 8861 and 8863 respirator masks were recommended as part of the PPE by the World Health Organization (WHO).
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