Skip directly to search Skip directly to A to Z list Skip directly to page options Skip directly to site content

NIOSHTIC-2 Publications Search

Search Results

Filtration performance of FDA-cleared surgical masks.

Authors
Rengasamy-S; Miller-A; Eimer-BC; Shaffer-RE
Source
J Int Soc Respir Prot 2009 Mar; 26(I-II):54-70
NIOSHTIC No.
20035805
Abstract
A shortage of NIOSH-approved respirators is predicted during an influenza pandemic and other infectious disease outbreaks. Healthcare workers may use surgical masks instead of respirators due to non-availability and for economical reasons. This study investigated the filtration performance of surgical masks for a wide size range of submicron particles including the sizes of many viruses. Five models of FDA-cleared surgical masks were tested for room air particle penetrations at constant and cyclic flow conditions. Penetrations of polydisperse NaCl aerosols (7520 nm, count median diameter), monodisperse NaCl aerosols (20-400 nm range) and particles in the 20-1000 nm range were measured at 30 and 85 liters/min. Filtration performance of surgical masks varied widely for room air particles at constant flow and correlated with the penetration levels measured under cyclic flow conditions. Room air particle penetration levels were comparable to polydisperse and monodisperse aerosol penetrations at 30 and 85 liters/minute. Filtration performance of FDA-cleared surgical masks varied widely for room air particles, and monodisperse and polydisperse aerosols. The results suggest that not all FDA-cleared surgical masks will provide similar levels of protection to wearers against infectious aerosols in the size range of many viruses.
Keywords
Respirators; Respiratory-protective-equipment; Infectious-diseases; Viral-diseases; Health-care; Health-care-personnel; Aerosols; Aerosol-particles; Biohazards; Author Keywords: Surgical mask; Filtration performance; Particle penetration; Virus particles; Nanoparticles
Contact
Samy Rengasamy, National Institute for Occupational Safety and Health, National Personal Protective Technology Laboratory, 626 Cochrans Mill Road, P.O.Box 18070, Pittsburgh, PA 15236, USA
Publication Date
20090301
Document Type
Journal Article
Email Address
ARengasamy@cdc.gov
Fiscal Year
2009
NTIS Accession No.
NTIS Price
Issue of Publication
I-II
ISSN
0892-6298
NIOSH Division
NPPTL
Source Name
Journal of the International Society for Respiratory Protection
State
PA
TOP