Short-term exposure limit
Introduction A '''short-term exposure limit''' ('''STEL''') is the acceptable average exposure over a short period of time, usually 15 minutes as long as the time-weighted average is not exceeded.STEL is a term used in exposure assessment, occupational health, industrial hygiene and toxicology. The STEL may be a legal limit in the United States for exposure of an employee to a chemical substance. The Occupational Safety and Health Administration (U.S. OSHA) has set OSHA-STELs for 1,3-butadiene, benzene and ethylene oxide. For chemicals, STEL assessments are usually done for 15 minutes and expressed in parts per million (ppm), or sometimes in milligrams per cubic meter (mg/m3).The American Conference of Governmental Industrial Hygienists publishes a more extensive list of STELs as threshold limit values (TLV-STEL).__TOC__
Similar national exposure limits *United Kingdom**COSHH (''Control of Substances Hazardous to Health''). *Australia**OES Occupational Exposure Standard*France**VLEP 8h00 (''Valeur Limite d’Exposition Professionnelle 8h00'')**VLEP CT (''Valeur Limite d’Exposition Professionnelle Court Terme'')*Netherlands**MAC (''Maximaal Aanvaarde Concentratie'')*Malaysia**PEL (''Permissible Exposure Limits'')*Poland**NDSCh (''Najwyższe dopuszczalne stężenie chwilowe'')*Russia**ПДК (''предельно допустимая концентрация'')
See also * Permissible exposure limit* Exposure action value
Notes