National Personal Protective Technology Laboratory
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NPPTL is a division of the National Institute for Occupational Safety and Health
It has facilities located south of the city of Pittsburgh, Pennsylvania. NPPTL tests and certifies respirators.
NPPTL is organized into three branches
Policies and Standards
editTechnology Evaluation Branch
editTechnology Review Branch
editIts webpage can be found at NPPTL Website
NIOSH Divisions