What does TLV-C indicate?

TLV-C stands for "Threshold Limit Value-Ceiling." It indicates the concentration of a substance in the air that should never be exceeded during any part of the workday. This limit is critical for ensuring worker safety, as exposure to levels above this threshold may pose immediate health risks.

The rationale behind having a ceiling limit is to provide a strict guideline for exposure that is not meant to be surpassed at any time, minimizing the risk of acute toxicity or harmful effects associated with certain hazardous substances. Therefore, TLV-C is a key regulatory measure in occupational health that helps safeguard workers' health by establishing a maximum acceptable concentration of hazardous substances in the environment at all times.