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14 masks tested for penetrability by aerosol at speaking.
Fig. 2 from article by Emma P. Fischer, Martin C. Fischer, David Grass, Isaac Henrion, Warren S. Warren and Eric Westman [1][2]
Original filename: https://advances.sciencemag.org/content/advances/early/2020/08/07/sciadv.abd3083/F2.large.jpg?width=800&height=600&carousel=1
Original filename: https://advances.sciencemag.org/content/advances/6/36/eabd3083/F1.medium.gif
Description
https://advances.sciencemag.org/content/6/36/eabd3083
Mask, name Description
1, “Surgical”* Surgical mask, three layers
2, “Valved N95” N95 mask with exhalation valve
3, “Knitted” Knitted mask
4, “PolyProp” Two-layer polypropylene apron mask
5, “Poly/cotton” Cotton-polypropylene-cotton mask
6, “MaxAT” One-layer Maxima AT mask
7, “Cotton2” Two-layer cotton, pleated style mask
8, “Cotton4” Two-layer cotton, Olson style mask
9, “Cotton3” Two-layer cotton, pleated style mask
10, “Cotton1” One-layer cotton, pleated style mask
11, “Neck Gaiter” One-layer polyester/spandex, 0.022 g/cm2
12, “Bandana”* Double-layer bandana, 0.014 g/cm2
13, “Cotton5”* Two-layer cotton, pleated style mask
14, “Fitted N95” N95 mask, no exhalation valve, fitted
“Swath” Swath of mask material, polypropylene
“None”* Control experiment, no mask
References
- ↑ https://advances.sciencemag.org/content/6/36/eabd3083 Low-cost measurement of face mask efficacy for filtering expelled droplets during speech. Emma P. Fischer, Martin C. Fischer, David Grass, Isaac Henrion, Warren S. Warren and Eric Westman. Science Advances, 02 Sep 2020: Vol. 6, no. 36, eabd3083 DOI: 10.1126/sciadv.abd3083
- ↑ https://experimental.unige.ch/2020/08/16/une-methode-simple-pour-mesurer-lefficacite-des-masques-contre-le-covid-19/ Une méthode simple pour mesurer l’efficacité des masques contre le COVID-19 Publié le 16 août 2020 par François Lombard. Mesure peu coûteuse de l’efficacité de masque faciaux pour filtrer les gouttelettes expulsées pendant la parole
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