Page:NIOSH Manual of Analytical Methods - Chapter O.pdf/13

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12.

FIGURES

Figure 1. ISO/ACGIH/CEN sampling conventions. An ideal sampler should have a sampling efficiency curve that matches one of these curves as closely as possible under all wind directions and velocities. The 50% cutpoints for the respirable and thoracic conventions are 4 and 10 µm respectively.

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NIOSH Manual of Analytical Methods