National Personal Protective Technology Laboratory
National Personal Protective Technology Laboratory (NPPTL) means the National Personal Protective Technology Laboratory, National Institute for Occupational Safety and Health (NIOSH), Centers for Disease Control and Prevention, Department of Health and Human Services, P.O. Box 18070, 626 Cochrans Mill Road, Pittsburgh, PA 15236. NPPTL administers the NIOSH conformity assessment program for respiratory protective devices, replacing the former Certification and Quality Assurance Branch within the Division of Safety Research, Appalachian Laboratory for Occupational Safety and Health, NIOSH.