TITLE Standard Operating Procedure for Preparation of Method Evaluation Materials for Lead in Paint AUTHOR(S) D. A. Binstock, E. E. Williams, J. D. Neefus, and W. F. Gutknecht PERFORMING ORGANIZATION NAME AND ADDRESS Research Triangle Institute P.O. Box 12194 Research Triangle Park, NC 277092194 SPONSORING AGENCY NAME AND ADDRESS Atmospheric Research and Exposure Assessment Laboratory Office of Research and Development U.S. Environmental Protection Agency Research Triangle Park, NC 27711 ABSTRACT A protocol for preparing method evaluation materials from real world leadcontaining paints is described. Materials prepared using this protocol have been found suitable for use as quality control check samples as well as for evaluation of new methods. Procedures described include collection of materials, preliminary cleanup, homogenization, verification, and packaging.