Standards for limiting worker exposure to airborne contaminants. They are the maximum concentration in air at which it is believed that a particular substance will not produce adverse health effects with repeated daily exposure. It can be a time-weighted average (TLV-TWA), a short-term value (TLV-STEL), or an instantaneous value (TLV-Ceiling). They are expressed either as parts per million (ppm) or milligram per cubic meter (mg/m3).

DUI

D020711 MeSH Browser

CUI

M0328359

History note

2000; use MAXIMUM ALLOWABLE CONCENTRATION 1976-1999; for TLV use MAXIMUM ALLOWABLE CONCENTRATION 1976-1999

Public note

2000; see MAXIMUM PERMISSIBLE EXPOSURE LEVEL 1976-1999; for TLV see MAXIMUM PERMISSIBLE EXPOSURE LEVEL 1976-1999