Threshold Limit Value glossary and government resources

Threshold Limit Value : The concentration of an airborne substance to which an average person can be repeatedly exposed without adverse effects. TLVs may be expressed in three ways: (1) TLV-TWA--Time weighted average, based on an allowable exposure averaged over a normal 8-hour workday or 40-hour work- week; (2) TLV-STEL--Short-term exposure limit or maximum concentration for a brief specified period of time, depending on a specific chemical (TWA must still be met); and (3) TLV-C--Ceiling Exposure Limit or maximum exposure concentration not to be exceeded under any circumstances. (TWA must still be met.) [Environmental Protection Agency]

The Registry of Toxic Effects of Chemical Substances (RTECS)
American Conference of Governmental Industrial Hygienists (ACGIH) Threshold

The Registry of Toxic Effects of Chemical Substances (RTECS)
American Conference of Governmental Industrial Hygienists (ACGIH) Threshold

An analysis of the implications of a magnetic field threshold ...
This article examines the implications of a 10 gauss (G) occupational threshold

Toluene diisocyanate induction of airway hyperresponsiveness at ...
...of airway hyperresponsiveness at the threshold limit value (10 ppb) in rabbits.

Choosing a Level of Concern
...you also may see a value for the Threshold Limit Value Time-Weighted Average

Occupational Exposure Limits
...is compared with a standard such as the threshold limit value (TLV;

Chemical Hazards Response Information System (CHRIS)-Provides ...
Treatment of Exposure - Threshold Limit Value/Time Weighted Average - Threshold

EPA: Term :
...threshold limit value (tlv). TRS Logo. The concentration of an airborne

EPA: Term :
...threshold limit value (TLV). TRS Logo. The concentration of an airborne

Brookhaven National Lab: Industrial Hygiene Group
...listed as permissible exposure limit (PEL) or threshold limit value (TLV).

Hospital eTool: HealthCare Wide Hazards - Glutaraldehyde
All employees who may be exposed to above the ceiling threshold limit value (TLV)

NETL's Cool Science - Ask a NETL Researcher Q&A Archive
ACGIH Threshold Limit Value (TLV): 50 ppm; ACGIH Time Weighted Average 100

OEHHA
...(REL) for isopropanol is 2000 times lower than the American Conference of

MSDS Topics
OSHA permissible exposure limit, ACGIH Threshold Limit Value, and any other

UT Admin Code R307-150. Emission Inventories.
..."Acute Contaminant" means any noncarcinogenic air contaminant for which a

MSDSmid
Threshold limit value-time-weighted average (TLV-TWA); Threshold limit

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