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Assessment of the impact of multiple mild-steam decontaminations on the protection performance of disposable KN95 filtering facepiece respirators

Zentgraf, Florian ; Johe, Pascal ; Hoche, Holger ; Göckel, Bernd ; Becker, S. ; Oechsner, Matthias ; Dreizler, Andreas (2021)
Assessment of the impact of multiple mild-steam decontaminations on the protection performance of disposable KN95 filtering facepiece respirators.
In: Infection Prevention in Practice, 2021, 3 (2)
doi: 10.26083/tuprints-00019343
Article, Secondary publication, Publisher's Version

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Item Type: Article
Type of entry: Secondary publication
Title: Assessment of the impact of multiple mild-steam decontaminations on the protection performance of disposable KN95 filtering facepiece respirators
Language: English
Date: 2021
Year of primary publication: 2021
Publisher: Elsevier
Journal or Publication Title: Infection Prevention in Practice
Volume of the journal: 3
Issue Number: 2
Collation: 6 Seiten
DOI: 10.26083/tuprints-00019343
Corresponding Links:
Origin: Secondary publication via sponsored Golden Open Access
Abstract:

The COVID-19 pandemic caused tremendous supply bottlenecks of single-use filtering facepiece respirators (FFRs) leading to a growing need for a potential reuse. This study assesses the impact of multiple mild-steam decontaminations with 121 °C/2000 mbar/20 min on the protection performance of disposable FFRs. It focuses on FFRs of type KN95 that is recently dominating the markets, but its decontamination is not covered in the literature. It was found that up to ten cycles, only minor degradation in the filter efficiency, breathing resistance and none in the material structure is apparent, suggesting a potential for multiple decontamination cycles at almost unchanged protective properties of KN95 FFRs.

Status: Publisher's Version
URN: urn:nbn:de:tuda-tuprints-193436
Additional Information:

Keywords: Sterilization Face mask Respirator Filtration efficiency KN95 COVID-19

Classification DDC: 600 Technology, medicine, applied sciences > 600 Technology
600 Technology, medicine, applied sciences > 610 Medicine and health
Divisions: 16 Department of Mechanical Engineering > Center for Engineering Materials, State Materials Testing Institute Darmstadt (MPA) Chair and Institute for Materials Technology (IfW)
16 Department of Mechanical Engineering > Institute of Reactive Flows and Diagnostics (RSM)
Date Deposited: 23 Aug 2021 12:06
Last Modified: 23 Aug 2021 13:07
URI: https://tuprints.ulb.tu-darmstadt.de/id/eprint/19343
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