• Report

Analysis of crayons for asbestos and other fibrous materials, and recommendations for improved analytical definitions

Citation

Beard, M., Crankshaw, O., Ennis, J., & Moore, C. (2001). Analysis of crayons for asbestos and other fibrous materials, and recommendations for improved analytical definitions. (Research Triangle Institute, Center for Environmental Measurements and Quality Assurance). Unknown Publisher.

Abstract

In May 2000, reports of asbestos-containing crayons surfaced in the
media. The asbestos was reportedly detected by laboratories accredited
by the U.S. Government for asbestos analysis. The crayon manufacturer
commissioned additional analyses by accredited laboratories, and the
results showed there to be no asbestos material in the crayons. In the
interest of providing information about possible causes of and remedies
for these discrepancies, Research Triangle Institute (RTI) conducted an
investigation designed to (1) identify any fibers present in crayons, (2)
conduct quantitative analysis to determine if fibers are present in sufficient
numbers to properly catalog and identify them, (3) theorize why
fibers were identified differently by the laboratories, and (4) make recommendations for improving the analytical/quality assurance (QA) process.