| U.S. Department of Labor | ![]() |
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| Occupational Safety & Health Administration | ||||||
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Class III - Flammable Fibers or Flyings Environments containing flammable fibers or flyings also need to be considered when sampling. Volatile gases and vapors may, on occasion, be given off from these fibers or flyings, or the source of the flyings or fibers is flammable materials. Instrumentation used for sampling in these environments need to be rated for Class III. |
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