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Q. What is the threshold limit value of copper in the atmosphere air?
Answer: 1.0 mg/m3
Notes: Inspirable copper dust takes a predominantly fibrous effect. The threshold limit value (TLV) of copper in atmospheric air is 1.0 m g / m 3. The threshold limit value of a chemical substance is believed to be a level to which a worker can be exposed day after day for a working lifetime without adverse effects.

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