What is TLV (threshold limit value)?
The threshold limit value was set by American Conference of Governmental industrial Hygienists, Inc (ACGIH) which is defined as the level of concentration of a chemical substance in which a worker can work without an unreasonable risk of disease or injury. It can be expressed in ppm or mg/m3.
For example the TLV of chlorine for an 8 hrs work day is 0.5ppm or 1.5 mg/m3. Which indicates a worker can work without any unreasonable risk of disease or injury for 8 hours if and only the chlorine concentration in his/her vicinity is within 0.5ppm.
The threshold limit value was set by American Conference of Governmental industrial Hygienists, Inc (ACGIH) which is defined as the level of concentration of a chemical substance in which a worker can work without an unreasonable risk of disease or injury. It can be expressed in ppm or mg/m3.
For example the TLV of chlorine for an 8 hrs work day is 0.5ppm or 1.5 mg/m3. Which indicates a worker can work without any unreasonable risk of disease or injury for 8 hours if and only the chlorine concentration in his/her vicinity is within 0.5ppm.
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