Immediately Dangerous to Life and Health (IDLH) 04
Immediately Dangerous to Life and Health (IDLH) 04 : Exposure to an atmosphere that poses an immediate adverse effect on health or the ability to escape
Ministry of Business, Innovation and Employment, Glossary of terms and acronyms, Wellington, New Zealand 2010. http://wwwsosh.govt.nz/resources/glossary-u.shtml, (Occupn Hlth and Sfty - Brit) {530}