IDLH

Immediately dangerous to life and health. In the event of the accidental exposure to a chemical, this is the concentration below which an individual could escape within 30 minutes without experiencing any escape-impairing or irreversible health effects.
Found on http://www.chemistry-dictionary.com/definition/idlh.php

IDLH

IDLH is an acronym for Immediately Dangerous to Life or Health, and is defined by the US National Institute for Occupational Safety and Health (NIOSH) as exposure to airborne contaminants that is `likely to cause death or immediate or delayed permanent adverse health effects or prevent escape from such an environment.` Examples include smoke or .....
Found on http://en.wikipedia.org/wiki/IDLH

IDLH

Any situation deemed Immediately Dangerous to Life and Health. More narrowly defined by OSHA. See main IDLH article. An area of maximum danger to firefighters. Often requires increased Personnel accountability.
Found on http://en.wikipedia.org/wiki/Glossary_of_firefighting
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