Filtration Performance of Layering Masks and Face Coverings and the Reusability of Cotton Masks after Repeated Washing and Drying

@article{Sankhyan2021FiltrationPO,
  title={Filtration Performance of Layering Masks and Face Coverings and the Reusability of Cotton Masks after Repeated Washing and Drying},
  author={Sumit Sankhyan and Karen N. Heinselman and Peter N. Ciesielski and Teresa Barnes and Michael E. Himmel and Hannah Teed and Sameer Patel and Marina E. Vance},
  journal={Aerosol and Air Quality Research},
  year={2021}
}
In this study, filtration efficiency of different respirators, face masks, and a 2-ply cotton handkerchief bandana was compared for particles in the size range of 60 nm-4 mu m under a "perfect fit" condition. The filtration efficiency at the most penetrating particle size of 0.3 mu m on average ranged from 83-99% for N95 and KN95 respirators, 42-88% for surgical masks, 16-23% for cloth masks, and 9% for bandana. We also investigated the effects of using double surgical masks or layering a cloth… 

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