Practice question

What is the TLV-TWA (Threshold Limit Value - Time Weighted Average)?

The maximum concentration a worker should never exceed at any time
The airborne concentration to which a worker can be exposed for a normal 8-hour workday and 40-hour workweek without adverse effects
The concentration that is immediately dangerous to life or health
The minimum detectable concentration of a substance

Answer: B — The airborne concentration to which a worker can be exposed for a normal 8-hour workday and 40-hour workweek without adverse effects

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