ACGIH 11 : American Conference of Governmental Industrial Hygienists. An organization that annually determines standards of exposure to toxic and otherwise harmful materials in the workroom air, commonly known as treshold limit value (TLV)
Grainger, Inc. (Maintenance, Repair and Operating MRO), Glossary of Safety Terms, IL, USA 2012. www.grainger.com/images/GlossaryofSafetyTermsPDF.p df, (IndS/Maint, Repr and Opr - Amer) {79}