Flat fold and cup-shaped N95 filtering facepiece respirator face seal area and pressure determinations: a stereophotogrammetry study

Details

• Personal Author:
  Benson SM ; Kim J-H ; Niezgoda G ; Roberge RJ ; Benson SM ; Kim J-H ; Niezgoda G ; Roberge RJ
• Description:
  Twenty subjects underwent quantitative respirator fit testing with two styles (flat fold, cup-shaped) of N95 filtering facepiece respirators (N95 FFRs). Passing a fit test was followed by stereophotogrammetry to determine the face seal area and computation of seal pressure. There were significantly different seal pressures (p < 0.01) between standard size flat fold and cup-shaped N95 FFRs but no significant differences in face seal area. No significant differences were noted in fit factors, but more individuals passed fit testing wearing flat fold respirators. The ability of flat fold N95 FFRs, at lower seal pressures, to obtain similar fit factors as cup-shaped N95 FFR at higher seal pressures offers the possibility of enhanced facial comfort without a loss of protection. Stereophotogrammetry offers a relatively simple, non-invasive technology to evaluate various properties of N95 FFR fit. [Description provided by NIOSH]
• Subjects:
  Occupational Health Personal Protective Equipment Protective Clothing Respiratory Protective Devices Respiratory System Safety
• Keywords:
  Air-purifying-respirators Anthropometry Author Keywords: Face Seal Area Face-masks Face-shields Headgear Humans Leak-detectors Leak-prevention Measurement-equipment N95 Filtering Facepiece Respirators Photometry Pressure-testing Quantitative-analysis Respirators Respiratory-equipment Seal Pressure Stereophotogrammetry Testing-equipment

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• ISSN:
  1545-9624
• Document Type:
  Text
• Genre:
  Journal Article ; Journal Article
• Place as Subject:
  OSHA Region 3 ; Pennsylvania
• CIO:
  National Institute for Occupational Safety and Health (NIOSH) ; National Institute for Occupational Safety and Health (NIOSH)
• Division:
  NPPTL - National Personal Protective Technology Laboratory ; NPPTL - National Personal Protective Technology Laboratory
• Topic:
  Workplace Safety & Health ; Workplace Safety & Health
• Location:
  North America ; North America
• Pages in Document:
  419-424
• Volume:
  10
• Issue:
  8
• NIOSHTIC Number:
  nn:20042819
• Citation:
  J Occup Environ Hyg 2013 Aug; 10(8):419-424
• Contact Point Address:
  Raymond Roberge, National Personal Protective Technology Laboratory, National Institute for Occupational Safety and Health, 626 Cochrans Mill Road, Pittsburgh, PA 15236
• Email:
  dtn0@cdc.gov
• Federal Fiscal Year:
  2013
• NORA Priority Area:
  Manufacturing ; Manufacturing
• Peer Reviewed:
  True
• Source Full Name:
  Journal of Occupational and Environmental Hygiene
• Collection(s):
  National Institute for Occupational Safety and Health
• Main Document Checksum:
  urn:sha-512:7c572e47af8df0e908bbb82348f476d762f9fe4674f5b1ca06c6b8ebc67599279e894da24862cc71e4bd0d8dc0810b4e408bccab0c08cb48c9b5b7e2c45e169d
• Download URL:
  https://stacks.cdc.gov/view/cdc/194921/cdc_194921_DS1.pdf
• File Type:
  [PDF - 293.07 KB ]