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Membranes | Free Full-Text | Nanofiber-Based Face Masks and Respirators as COVID-19 Protection: A Review
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Tips for buying a respirator in the Czech Republic: are FFP2 and KN95 the same? - Prague, Czech Republic
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Brno University of Technology - Researchers from the laboratory of bioplastics, Fakulta chemická VUT v Brně/Faculty of Chemistry BUT, have designed a simple respirator that could be produced as cheaply as plastic
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