Preprint Article Version 1 This version is not peer-reviewed

A Scalable Method for Ultraviolet C Disinfection of Surgical Facemasks Type IIR and Filtering Facepiece Particle Respirators 1 and 2

Version 1 : Received: 21 April 2020 / Approved: 23 April 2020 / Online: 23 April 2020 (11:36:29 CEST)

How to cite: Lede, I.; Nolte, K.; Kroes, R. A Scalable Method for Ultraviolet C Disinfection of Surgical Facemasks Type IIR and Filtering Facepiece Particle Respirators 1 and 2 . Preprints 2020, 2020040413 (doi: 10.20944/preprints202004.0413.v1). Lede, I.; Nolte, K.; Kroes, R. A Scalable Method for Ultraviolet C Disinfection of Surgical Facemasks Type IIR and Filtering Facepiece Particle Respirators 1 and 2 . Preprints 2020, 2020040413 (doi: 10.20944/preprints202004.0413.v1).

Abstract

Due to the SARS-CoV-2 pandemic a shortage of personal protective equipment, including surgical facemasks and Filtering Facepiece Particle Respirators has occurred. SARS-CoV-2 has a 79,5-82% homology to SARS-CoV. The SARS-CoV UVC sensitivity is described in literature. We have performed UVC transmission measurements of surgical facemasks and respirators. In addition, we performed UVC disinfection experiments of S. aureus with surgical facemasks and respirators. Results show that we can achieve an 8-log reduction of S. aureus in the inner layers of FFP1 respirators and the exterior of surgical facemasks. Furthermore, we showed a 7-log reduction of S. aureus in the inner layers of FFP2 respirators. We conclude that UVC disinfection is an effective, safe and scalable method for reuse of surgical facemask and respirators.

Subject Areas

SARS-CoV2; UVC; disinfeciton; respirators; reuse

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