Interlaboratory comparison of particle filtration efficiency testing equipment.
Particle filtration efficiency (PFE) is a critical property of face masks, with the most common test methods using sodium chloride as a challenge aerosol. In the absence of bottom-up uncertainty budgets for PFE, interlaboratory comparisons provide an alternative route to robustly quantify the precis...
| Publicado en: | Journal of Occupational & Environmental Hygiene Vol. 22; no. 4; pp. 259 - 274 |
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| Autores principales: | , , , , , |
| Formato: | CEU equations & formulas research tables/charts Journal Article |
| Publicado: |
Taylor & Francis Ltd
Apr2025
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| Acceso en línea: | Ver este registro en EBSCOhost |
| fields | @attributes: recordID: 1 pdfLink: plink: https://search.ebscohost.com/login.aspx?direct=true&db=ccm&AN=184403102&site=ehost-live header: @attributes: shortDbName: ccm uiTerm: 184403102 longDbName: CINAHL Complete uiTag: AN controlInfo: bkinfo: dissinfo: jinfo: jid: 15459624 V1L jtl: Journal of Occupational & Environmental Hygiene issn: 15459624 maglogo: Y pubinfo: dt: Apr2025 vid: 22 iid: 4 pid: 377 pub: Taylor & Francis Ltd place: Philadelphia, Pennsylvania artinfo: ui: 184403102 182231316 184403102 184403102 10.1080/15459624.2024.2447321 184403102 ppf: 259 ppct: 15 formats: fmt: – @attributes: type: T – @attributes: type: P tig: atl: Interlaboratory comparison of particle filtration efficiency testing equipment. aug: au: Sipkens, Timothy A. Mehri, Rym Perez Calderon, Ruth Green, Richard G. Oldershaw, Andrew Smallwood, Gregory J. affil: Metrology Research Centre, National Research Council Canada, Ottawa, Ontario, Canada sug: subj: Masks Standards Filtration Standards Filtration Equipment and Supplies Filtration Methods Equipment Reliability Particle Size Sodium Chloride Analysis Aerosols Analysis Comparative Studies Materials Testing Respiratory Protective Devices Funding Source Education, Continuing (Credit) ab: Particle filtration efficiency (PFE) is a critical property of face masks, with the most common test methods using sodium chloride as a challenge aerosol. In the absence of bottom-up uncertainty budgets for PFE, interlaboratory comparisons provide an alternative route to robustly quantify the precision and bias of the method. This work presents the results of several interlaboratory comparisons of particle filtration efficiency performed across a network of laboratories. Using log-penetration as a surrogate for PFE, it is shown that expanded reproducibility intervals were consistent across most samples, at around 26% of the nominal value of log-penetration. Between-laboratory contributions to this reproducibility were significant, nearly doubling the lab-reported uncertainties in most instances and emphasizing the need for ongoing interlaboratory studies to be performed for particle filtration. More work is required to identify the causes of these between-laboratory differences, requiring dedicated testing. Alongside uncertainty quantification, testing materials across a range of variables (such as the number of layers, amount of charge on the material, and basis weight) affirm that constant quality is a good approximation when layering or changing the basis weight on an otherwise identical material. pubtype: Academic Journal doctype: CEU equations & formulas research tables/charts Journal Article ougenre: Unknown language: English refInfo: holdings: @attributes: islocal: N |
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