Glossary Absolute A chemical substance that is relatively free of impurities. Absorb The penetration of a solid substance by a liquid as by capillary, osmotic, solvent or chemical action. Chemicals are readily absorbed into the human blood stream through the eyes or cuts in the skin. Professional organization responsible for creation of the TLV consensus exposure guidelines. Acid An organic or inorganic compound with a pH of less than 7.
Acidic materials are corrosive to human tissue.
Acute Toxicity Refers to adverse effects suffered as the result of a short, one-time exposure to toxic materials. It occurs within a relatively short period. Exposure is measured in seconds, minutes, or hours relative to inhalation or skin absorption. Adsorb Collection of gas or liquid molecules on the surface of another material. For sampling of most organic vapors, activated charcoal is a good adsorber.