what is the difference between LC100 and LD100

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LC100 and LD100 are respectively known Absolue Lethal Concentration and Absolute Lethal Dose. They both reflect the exposure required to kill a given percentatge of a test population LD100 (Absolute Lethal Dose) is used for solids and liquids and is expressed in milligrams of chemical per kilogram (mg/kg) of body weight. LC100 (Absolute Lethat Concentration) is used for gases and vapors and is usually expressed in milligram per cubic meters (mg/m3)in air. Ref: http://sis.nlm.nih.gov/enviro/glossarya.html

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