Jove
Visualize
Contact Us

Related Experiment Videos

Protection Against Dust by Respirators.

Richard C Brown1

  • 1a Health and Safety Laboratory , United Kingdom.

International Journal of Occupational Safety and Ergonomics : JOSE
|January 1, 1995
PubMed
Summary

Respirator performance relies on fibrous filter efficiency, particle capture mechanisms, and minimizing leakage. Small fiber diameters enhance filtration but can pose challenges, while electrostatic charges improve efficiency and reduce pressure drop.

Related Concept Videos

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

Meal-feeding promotes skeletal growth by ghrelin-dependent enhancement of growth hormone rhythmicity.

The Journal of clinical investigation·2025
Same author

DeepC: predicting 3D genome folding using megabase-scale transfer learning.

Nature methods·2020
Same author

An equivariant Bayesian convolutional network predicts recombination hotspots and accurately resolves binding motifs.

Bioinformatics (Oxford, England)·2018
Same author

Unacylated ghrelin promotes adipogenesis in rodent bone marrow via ghrelin O-acyl transferase and GHS-R<sub>1a</sub> activity: evidence for target cell-induced acylation.

Scientific reports·2017
Same author

Spectrally resolved chemiluminescent probes for sensitive multiplex molecular quantification.

Analytical chemistry·2012
Same author

Development and application of a novel acridinium ester for use as a chemiluminescent emitter in nucleic acid hybridisation assays using chemiluminescence quenching.

Organic & biomolecular chemistry·2008
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Area of Science:

  • Occupational Health and Safety
  • Filtration Technology
  • Respiratory Protection

Background:

  • Fibrous filters are crucial for respirator performance.
  • Understanding particle capture mechanisms is essential for effective filtration.
  • Respirator leakage and protection factors significantly impact real-world efficacy.

Purpose of the Study:

  • To review the mechanism of action of fibrous filters.
  • To discuss the performance of respirators, including filtration and leakage.
  • To explore factors influencing respirator efficiency and protection.

Main Methods:

  • Analysis of pressure drop across filters based on fiber diameter and filtration velocity.
  • Discussion of particle capture mechanisms: interception and diffusional deposition.
  • Review of respirator leakage, protection factors, and their variation over time.

Main Results:

  • Smaller fiber diameters yield more efficient filters but can present challenges.
  • Electrically charged materials offer high efficiency and low pressure drop.
  • Discrepancies exist between laboratory-measured and workplace-provided respirator protection.

Conclusions:

  • Respirator effectiveness depends on filter design, material properties, and minimizing leakage.
  • Electrostatic charging enhances filter performance.
  • Real-world respirator protection is influenced by face seal leaks and valve integrity.
Keywords:
electrostaticsfilterleakageprotectionrespirator

Related Experiment Videos