NSL Analytical Services Inc., Cleveland, Ohio, received accreditation for ISO/IEC 17025. The Performance Review Institute (PRI) conducted the audit. Operational guidelines examined during the audit covered 25 different areas of laboratory operations and responsibility, including lab organization and management, quality assurance systems, document control, service to customers, lab records, internal audits, management reviews to ensure continuing effectiveness, test methods, measurement traceability and reporting of results.