Laboratories recommended to perform quantitative analyses of lead (7439921) in paint chips, soils and dusts will have to be recognized by the Environmental Protection Agency's National Lead Laboratory Accreditation Program (NLLAP). A variety of analytical methods were used to meet the requirements of NLLAP, but the laboratory's quality system had to be documented and reference material and blanks used with each series of samples. Two requirements were necessary for NLLAP recognition: successful participation in proficiency testing using real world samples, and laboratory accreditation. The ELPAT Program had three principal aspects to its operation: proficiency testing samples were prepared from real world samples of paint chips, soil and dusts; the program was performance based; and the program was open to all interested laboratories. Laboratory accreditation involved submission of the application describing the laboratory's quality system and manual to the accreditation operation, and an on site evaluation by NLLAP qualified assessors of laboratory operations. Corrections to laboratory procedures had to be effective in solving analytical problems as they were identified. NLLAP was close to being developed into a nationwide program. Lists of laboratories that performed successfully in the ELPAT Program and their accreditation status were updated monthly and provided to individual states and the public by the Lead Information Clearinghouse.
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