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Review of ambient aerosol test procedures in ASAE standard S525.

Authors
Heitbrink-WA; Hall-RM; Reed-LD; Gibbons-D
Source
J Agric Saf Health 1998 Nov; 4(4):255-266
NIOSHTIC No.
20024968
Abstract
In November 1997, the American Society of Agricultural Engineers (ASAE) approved ASAE Standard S525. This standard provides performance specifications for environmental enclosures that are intended to protect operators from pesticide exposures during application. As part of ASAE Standard S525, optical particle counters and ambient aerosol are used to quantitatively evaluate the performance of these enclosures. This consensus standard specifies that the enclosure shall provide a 50 to 1 reduction in exposures for particles in a range of 2mm-4mm aerodynamic diameter. ASAE Standard S525 also states that the filters shall be at least 99 percent efficient for particles larger than 3mm. Data collection involves using two optical particle counters to measure aerosol concentrations inside and outside the cab during at least four different sessions. Statistical tests, specifically t-tests, are used to evaluate adherence to the standard. Because the test procedure can be complicated by aerosol generation in the cab, sophisticated judgment is needed before testing and data accumulation begin. The paper's purpose is to review the basis for the ambient aerosol testing procedures, as specified in ASAE Standard S525, and to point out the standard's pitfalls.
Keywords
Aerosols; Environmental-factors; Agricultural-industry; Agricultural-workers; Agricultural-chemicals; Pesticides; Pesticides-and-agricultural-chemicals; Occupational-exposure; Environmental-exposure; Standards; Author Keywords: Ambient aerosol; Environmental enclosures; Testing; ASAE Standard S525; Aerosol instrumentation; Optical particle counters
Contact
William A. Heitbrink, NIOSH, 4676 Columbia Parkway, R5, Cincinnati, OH 45226
CODEN
JASHFD
Publication Date
19981101
Document Type
Journal Article
Email Address
wah2@cdc.gov
Fiscal Year
1999
NTIS Accession No.
NTIS Price
Issue of Publication
4
ISSN
1074-7583
NIOSH Division
DPSE
Source Name
Journal of Agricultural Safety and Health
State
OH; CA
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