Threshold limit value of copper in the atmospheric air is
0.001 mg/m3
0.01 mg/m3
1.0 mg/m3
5.0 mg/m3
Correct Option: C
Inspirable copper dust takes a predominantly fibrous effect. The ALV of copper aerosol in the workplace atmosphere is 0.5 mg/m3. while the threshold limit value (TLV) is 1.0 mg/m3.
