No Observable Adverse Effect Level (NOAEL) 3 : The highest dose or concentration of a substance at which no significant adverse biological or toxic effect is observed
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}