Threshold Limit Values for Chemical Substances and Physical Agents

Threshold Limit Values for Chemical Substances and Physical Agents and Biological Exposure Indexes," Proceedings of American Conference of Government Hygienists, Cincinnati, Ohio, 1996. 

American Conference of Governmental Industrial Hygienists. Threshold limit values for chemical substances and physical agents and biological exposure indices. ACGIH, Cincinnati, OH. 1999. 

Recently it has become apparent that many common laboratory chemicals have subtle biological effects that were not suspected previously. A list of 400 toxic substances is available in the Federal Register, Vol. 40, No. 23072, May 28, 1975, and an abbreviated version of this list is presented in Inorganic Syntheses, Vol. 18, p. xv, 1978. For a current assessment of the hazards of any particular chemical, see the most recent edition of Threshold Limit Values for Chemical Substances and Physical Agents in the Workroom Environment published by the American Conference of Governmental Industrial Hygienists. 

American Conference of Governmental Industrial Hygienists. TLVs—Threshold Limit Values for Chemical Substances and Physical Agents in the Work Environment with Intended Changes. Cincinnati (published annually). 

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