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A tea towel/dish cloth mask catches 70% of virus sized, a vacuum cleaner bag 85% particles as against 90% for surgical masks. Professional and Home-Made Face M
by barry-cotter 7y ago
A tea towel/dish cloth mask catches 70% of virus sized, a vacuum cleaner bag 85% particles as against 90% for surgical masks.
Professional and Home-Made Face Masks Reduce Exposure to Respiratory Infections among the General Population
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2440799/ https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2440799/