IDLH: Immediately Dangerous to Life and Health
Respirator Information
Respirators are an effective method of protection against designed hazards when properly selected and
worn. Respirator use is encouraged, even when exposures are below the exposure limit, to provide an
additional level of comfort and protection for workers. However, if a respirator is used improperly or
not kept clean, the respirator itself can become a hazard to the user. Sometimes, users may wear
respirators to avoid exposures to hazards, even if the amount of substance does not exceed the limits
set by OSHA standards. If your employer provides respirators for your voluntary use, or if you provide
your own respirator, you need to take certain precautions to be sure that the respirator itself does not
present a hazard.
Requirements
If you choose to voluntarily wear a respirator, the following are required:
• Read and comply with all instructions provided by the manufacturer on use, maintenance,
cleaning and care, and warnings regarding the limitations of the respirator.
• Choose respirators certified for use to protect against the contaminant of concern. The National
Institute for Occupational Safety and Health (NIOSH) of the US Department of Health and Human
Services certifies respirators. A label of statement of certification should appear on the respirator
or respirator packaging. It will tell you what the respirator is designed for and how much it will
protect you.
• Do not wear your respirator into atmospheres containing contaminants for which your respirator
is not designated to protect against. For example, a respirator designed to filter dust particles
will not protect you against gases, vapors, or very small solid particles of fumes or smoke.
• Store your respirator in a manner that prevents you from mistakenly using someone else’s
respirator.
• Ensure you store your respirator according to the manufacturer’s guidelines.
• Do not store respirators hanging from their straps.
• Clean your respirator periodically according to the manufacturer’s guidelines.
• Inspect your respirator before each use for tears, rips, holes, or other damage that may make it
unsuitable for use.