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Source: Occupational Safety and Health Administration (OSHA), 1989, Air contaminants— Permissible exposure limits standard, Code of Federal Regulations, Title 29, sec. 1910.1000, App. 2 (Washington, D.C.: U.S. Government Printing Office).

Notes: aValues are 8-hr, time-weighted averages, except values for nitrogen dioxide, which are ceiling values.

bFewer than two fibers longer than 5 jm in each cubic centimeter.

Source: Occupational Safety and Health Administration (OSHA), 1989, Air contaminants— Permissible exposure limits standard, Code of Federal Regulations, Title 29, sec. 1910.1000, App. 2 (Washington, D.C.: U.S. Government Printing Office).

Notes: aValues are 8-hr, time-weighted averages, except values for nitrogen dioxide, which are ceiling values.

bFewer than two fibers longer than 5 jm in each cubic centimeter.

exposure limits. Table 5.29.3 lists the available badges and badge holders, including a smoke detector. When the exposed badge is treated with a developing agent, a color change results, which can be interpreted by electronic monitors. Suppliers analyze the exposed badges within 24 hr and return an analysis report.

COLOR DETECTOR (DOSIMETER) TUBES

Color detector tubes (CDT) determine contaminant concentrations in work areas without pumps, charts, or train-

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