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The accreditation of lead (Pb) testing laboratories by the American Association for Laboratory Accreditation (A2LA) has been recognized by the U.S. Environmental Protection Agency under its National Lead Laboratory Accreditation Program (NLLAP). The A2LA program involves on-site assessment and successful participation in proficiency testing.
laboratory accreditation, assessment, proficiency testing
Vice President, American Association for Laboratory Accreditation, Gaithersburg, MD