SAMPLING:
1. Calibrate each personal sampling pump with a representative sampler in line.
2. Break the ends of the sampler immediately before sampling. Attach sampler to personal sampling pump with flexible tubing. Connect the drying tube to the front section of the charcoal tube with a 20-mm section of PTFE tubing.
3. Sample at an accurately known flow rate between 0.01 and 0.2 L/min for a total sample size of
2 to 25 L.
NOTE: Samples may be taken up to 1 L/min if ambient humidity is low [3,4].
4. Keep the drying tube connected to the charcoal tube during shipping. Refrigerate (0 °C) to prevent CS 2 migration to the back section. Cap the open ends. Pack securely for shipment. NOTE: Store samples away from any source of CS 2 to avoid contamination.
NIOSH Manual of Analytical Methods (NMAM), Fourth Edition, 8/15/94