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Calculate the minimum sampling time you will require to be able to detect concentrations at the OELs listed in the table.

https://www.cdc.gov/niosh/nmam/default.html and the Occupational Safety and Health Administration (OSHA) methods at https://www.osha.gov/dts/sltc/methods/toc.html. Hazard Possible Method Occupational Exposure Limits (OEL) Manganese Fume (Welding) NIOSH 7302 5 mg/m3 (OSHA Ceiling) Copper Fume (Welding) NIOSH 7302 0.1 mg/m3 (OSHA 8-hour TWA) Lead Fume (Welding) NIOSH 7302 0.05 mg/m3 (OSHA 8-hour TWA) 1,2,4 trimethylbenzene (Paint) OSHA 1020 25 ppm […]

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