American Conference of Governmental Industrial HygienistsThe American Conference of Governmental Industrial Hygienists (ACGIH) is a professional association of industrial hygienists and practitioners of related professions, with headquarters in Cincinnati, Ohio. One of its goals is to advance worker protection by providing timely, objective, scientific information to occupational and environmental health professionals. Provided by Wikipedia
TLVs, threshold limit values for chemical substances in the work environment : adopted by ACGIH with intended changes for 1985-86.
Published 1985“...American Conference of Governmental Industrial Hygienists....”