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3649650 
Journal Article 
Proficiency Tests for the NIST Airborne Asbestos Program, 1990 
Turner, S; Steel, EB; Doorn, SS; Phelps, JM; Windsor, ES 
1994 
19 
146 
Prepared in cooperation with Research Triangle Inst., Research Triangle Park, NC. Center for Environmental Systems. tional Voluntary Accreditation Program (NVLAP) at the National Institute of Standards and Technology (NIST) has since 1990 had a program to accredit those laboratories involved in the analysis of airborne asbestos by transmission electron microscopy. As a part of that program, laboratories are sent proficiency tests twice yearly to evaluate their ability to correctly analyze samples and to test the general knowledge of laboratory personnel. The results of the tests are sent to the participating laboratories in the form of a summary report. This NIST Internal Report (NISTIR) contains the instructions and summary reports issued for the proficiency tests in 1990 (PT90-1, PT90-2). 
Asbestos; Air pollution detection; Chemical analysis; Standards; Transmission electron microscopy; Performance evaluation; Laboratories; Sampling; Personnel development; Quality assurance; Quality control; National Voluntary Accreditation Program; Proficiency tests