The Certified Equipment List (CEL) is the official listing of all NIOSH Approved® respirators. Search the CEL using the approval number, quick search, or advanced search tabs.

The National Institute for Occupational Safety and Health (NIOSH) conducts research and makes recommendations for the prevention of work-related injury and illness.

NIOSH is a professionally diverse organization with a staff of 1,200 people representing a wide range of disciplines including occupational epidemiology, occupational toxicology, medicine, …

Jul 17, 2025 · This document helps healthcare employers identify drugs considered by NIOSH to be hazardous drugs.

In addition to the resources available from OSHA to address workplace health concerns, assistance also is available from the Health Hazard Evaluation (HHE) program of the National …

Search the NIOSHTIC-2 bibliographic database for all NIOSH-supported research publications and products published by NIOSH or elsewhere, including journal articles.

The NIOSH Pocket Guide to Chemical Hazards (NPG) informs workers, employers, and occupational health professionals about workplace chemicals and their hazards. The NPG …

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The National Institute for Occupational Safety and Health (NIOSH) conducts research in hearing loss and noise exposure surveillance, noise control engineering, hearing protection devices, …

Regulations NIOSH Centers Center for Direct Reading and Sensor Technologies Center for Maritime Safety and Health Studies Center for Motor Vehicle Safety Nanotechnology …