Filtering Facepiece (FFP) masks offer a real filter effect.
Synonym: Filtering Facepiece Respirators (FFRs)
Percent of Aerosols Filtered
Total Inward Leakage
coarse dust; do not protect against a virus
some protection against viruses
contact with a highly infectious agent
Equivalent International Standards
N95, KN95, P2
N99, EN149, P3
• KN95 masks are often made in China.
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