National Technical Reports Library - NTRL

National Technical Reports Library


Details
Actions:
Download PDFDownload XML
Download

Equipment and Procedures for Mounting Millipore Filters and Counting Asbestos Fibers by Phase Contrast Microscopy.


PB91184507

Publication Date 1969
Personal Author Bayer, S. G.; Zumwalde, R. D.; Brown, T. A.
Page Count 20
Abstract A simple and inexpensive sampling method was described for the determination of concentrations of asbestos (1332214) dust in the air for comparison with established hygiene limits. The results obtained were reproducible. The method used disposable plastic membrane filter holders, preloaded with membrane filters. These membrane filters may be made transparent and the asbestos fibers then counted with a phase contrast microscopy at 430X or 400X. The Asbestosis Research Council in Great Britain has used the method as has the United States Public Health Service. This was also the method specified in the proposed change for asbestos in the 1968 Threshold Limit Values of the American Conference of Governmental Industrial Hygienists. The details of the equipment needed and the procedure to be followed if one is to obtain reproducible results were described.
Keywords
  • Asbestos
  • Air sampling
  • Filters
  • Chemical analysis
  • Industrial hygiene
  • Air pollution monitoring
  • CAS 1332-21-4
Source Agency
  • National Institute for Occupational Safety and Health
NTIS Subject Category
  • 99A - Analytical Chemistry
  • 94D - Job Environment
  • 41I - Job Environment
Corporate Authors Bureau of Occupational Safety and Health, Cincinnati, OH.
Document Type Technical Report
NTIS Issue Number 199116
Equipment and Procedures for Mounting Millipore Filters and Counting Asbestos Fibers by Phase Contrast Microscopy.
Equipment and Procedures for Mounting Millipore Filters and Counting Asbestos Fibers by Phase Contrast Microscopy.
PB91184507

  • Asbestos
  • Air sampling
  • Filters
  • Chemical analysis
  • Industrial hygiene
  • Air pollution monitoring
  • CAS 1332-21-4
  • National Institute for Occupational Safety and Health
  • 99A - Analytical Chemistry
  • 94D - Job Environment
  • 41I - Job Environment
Loading