WHO 2 : guideline values: An indication of the concentrations of a substance to which people may be exposed without adverse health effects; set by the WHO
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}