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A July 1972 technical manual by Stephen G. Bayer and Ralph D. Zumwalde describing the U.S. Public Health Service method for sampling airborne asbestos dust on membrane filters and counting and sizing fibers by phase-contrast microscopy. It covers microscope requirements, slide mounting, reticle calibration, counting rules, the concentration formula, a bibliography, supplier addresses and a results table.
- Author
- Stephen G. Bayer (Physical Science Technician); Ralph D. Zumwalde (Engineering Technician)
- Published by
- U.S. Public Health Service (procedure described); authoring organization not stated on the pages
- Series
- Union Carbide documents, UC-2174
- Date
- July 1972
- Number
- Bates UCC 006965 to UCC 006983
- Library no.
- ACL Doc 17188 · asbestosclaims.law/library/17188
- Rights
- A document from asbestos litigation, published for research and historical study.
Read or download
Read online Download the PDF Document UC-2174 · 19 pages · 735 KB
People and organizations
From Stephen G. Bayer (Physical Science Technician); Ralph D. Zumwalde (Engineering Technician).
- Stephen G. Bayer (author)
- Ralph D. Zumwalde (author)
- Asbestosis Research Council (named)
- Millipore (named)
- U.S. Department of Health (named)
- U.S. Public Health Service (USPHS) (named)
Related pages
Pages on our site about what this document covers: Fiber Counting · phase contrast microscopy (PCM).
About this copy
This is document UC-2174 of the Union Carbide documents, documents produced and used as evidence in asbestos lawsuits against Union Carbide, 19 pages. Production numbers UCC 006965 to UCC 006983.
Cite this document
Stephen G. Bayer (Physical Science Technician), Ralph D. Zumwalde (Engineering Technician). “S. G. Bayer and R. D. Zumwalde, Evaluating Airborne Asbestos Dust: Membrane Filter Sampling and Phase-Contrast Fiber Counting Procedure.” July 1972. Union Carbide documents, UC-2174, Bates UCC 006965 to UCC 006983. U.S. Public Health Service (procedure described); authoring organization not stated on the pages. AsbestosClaims.Law Library, ACL Doc 17188. https://asbestosclaims.law/library/17188.
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