PAT program: background and current status. (March 1999).
Appl Occup Environ Hyg 1999 Mar; 14(3):149-152
The Proficiency Analytical Testing (PAT) Program is managed by the American Industrial Hygiene Association (AIHA) in Fairfax, Virginia. The PAT Program provides quality control reference samples to approximately 1200 occupational health and environmental laboratories in 17 countries. Although one objective of the PAT Program is to evaluate the analytical ability of participating laboratories, the primary objective is to assist these laboratories in improving their laboratory performance. A total of 1188 laboratories were enrolled in the PAT Program with 1096 laboratories submitting results on round 134. Of the 1096 laboratories submitting results, 793 used the Internet data entry system. Laboratories are rated based upon performance in the PAT Program over the last year (i.e., four calendar quarters), as well as on individual contaminant performance. Individual contaminants are metals, silica, asbestos/fibers, organic solvents and diffusive samplers. Individual contaminant performance is rated as 1) proficient if all results have been reported and all are classified as acceptable for the last two consecutive rounds; and 2) proficient in all other cases if three-fourths or more of the results reported in the last four consecutive rounds are classified as acceptable. The percentage of labs rated proficient for PAT round 134 ranged from 90.4% for organic solvents to 98.8% for Silica.
Case-studies; Respiratory-protection; Respiratory-protective-equipment; Sulfides; Self-contained-breathing-apparatus; Personal-protective-equipment; Air-flow; Workers; Worker-health; Work-environment
NIOSH, Hazard Evaluation and Technical Assistance Branch, 4676 Columbia Parkway, Cincinnati, OH 45226
Applied Occupational and Environmental Hygiene