Der große Maskentest

1 /12 Mund-Nasen-Schutz
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Duke University
2 /12 N-95 Maske mit Ventil
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Duke University
3 /12 Gestrickte Maske
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Duke University
4 /12 2-lagige Polypropylen-Maske
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Duke University
5 /12 Baumwoll-Polypropylen-Baumwoll -Maske
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Duke University
6 /12 1-lagige Maxima AT
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Duke University
7 /12 2-lagige Baumwollmaske plissiert
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Duke University
8 /12 2-lagige Baumwollmaske Typ "Olson"
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Duke University
9 /12 2-lagige Baumwollmaske
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Duke University
10 /12 1-lagige Baumwollmaske plissiert
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Duke University
11 /12 Oberziehschal
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Duke University
12 /12 Gefaltetes Bandana
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Duke University