Preferred Label : threshold limit value;
Detailed label : threshold limit value (TLV);
IUPAC acronym : TLV; TWA; ACGIH; STEL;
IUPAC definition : The concentration in air to which it is believed that most workers can be exposed
daily without an adverse effect ( i i.e. /i , effectively, the threshold between safe
and dangerous concentrations). The values were established (and are revised annually)
by the ACGIH and are time-weighted concentrations (TWA) for a 7- or 8-h workday and
40-h workweek, and thus are related to chronic effects. A short-term exposure limit
(STEL) is defined as a 15-min TWA exposure, which should not be exceeded at any time
during a workday even if the 8-h TWA is within the TLV-TWA.;
Origin ID : TT06915;
See also
The concentration in air to which it is believed that most workers can be exposed
daily without an adverse effect ( i i.e. /i , effectively, the threshold between safe
and dangerous concentrations). The values were established (and are revised annually)
by the ACGIH and are time-weighted concentrations (TWA) for a 7- or 8-h workday and
40-h workweek, and thus are related to chronic effects. A short-term exposure limit
(STEL) is defined as a 15-min TWA exposure, which should not be exceeded at any time
during a workday even if the 8-h TWA is within the TLV-TWA.
