[Federal Register Volume 59, Number 99 (Tuesday, May 24, 1994)]
[Unknown Section]
[Page 0]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: 94-12597]


[[Page Unknown]]

[Federal Register: May 24, 1994]


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DEPARTMENT OF HEALTH AND HUMAN SERVICES
 

Fiber Size Classification and Measurement: Meeting

    The National Institute for Occupational Safety and Health (NIOSH) 
of the Centers for Disease Control and Prevention (CDC) announces the 
following meeting.

    Name: Fiber Size Classification and Measurement.
    Time and Date: 1 p.m.-3 p.m., June 7, 1994.
    Place: Alice Hamilton Laboratory, Conference Room C, NIOSH, CDC, 
5555 Ridge Avenue, Cincinnati, Ohio 45213.
    Status: Open to the public, limited only by the space available.
    Purpose: The purpose is to conduct an open meeting for the peer 
review of a NIOSH project entitled ``Fiber Size Classification and 
Measurement.'' This project concerns the evaluation and improvement 
of a fiber length classification instrument.
    This instrument operates by dielectrophoresis, a process that 
creates a gradient electric field which aligns the fibers and causes 
their migration toward a cylinder. Because the fibers migrate at a 
velocity which is proportional to the square of their length (longer 
fibers migrate at a faster rate than shorter ones), the researcher 
can select various lengths of fibers by manipulating the voltage 
that directs the migration of the fibers. The first part of the 
project will involve improvement and evaluation of the instrument's 
operational parameters. Fibers classified by length will 
subsequently be used in a variety of laboratory applications 
including: (1) Measurement of fiber deposition in respiratory system 
using a lung model; (2) measurement of fiber penetration through 
respirator filters; and (3) development of a size-selective fiber 
sampler for use in collecting personal breathing zone samples.
    Viewpoints and suggestions from industry, labor, academia, other 
government agencies, and the public are invited.
    Contact Person for Additional Information: Paul A. Baron, Ph.D., 
NIOSH, CDC, 4676 Columbia Parkway, Mailstop R7, Cincinnati, Ohio 
45226, telephone 513/841-4241.

    Dated: May 17, 1994.
William H. Gimson,
Acting Associate Director for Policy Coordination, Centers for Disease 
Control and Prevention (CDC).
[FR Doc. 94-12597 Filed 5-23-94; 8:45 am]
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