Threshold Limit Values
Synonyms
STEL
STELs
Short-Term Exposure Limit
TLV BLV
TLV Ceiling
TLV STEL
TLV TWA
TLV-BLV
TLV-BLVs
TLV-Biological Limit Value
TLV-Ceiling
TLV-Ceilings
TLV-STEL
TLV-STELs
TLV-TWA
TLV-TWAs
TLV-Time Weighted Average
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).
See Also