| Sampling Procedure Air Sampling 1. Caution must be taken to avoid breathing on, touching, or otherwise exposing the sampling containers to human contamination. 2. For indoor sampling, ensure that all doors and windows are closed. 3. Calibrate pump to 1.5 liters per minute 4. Using glove, connect cassette to pump with the red-capped end toward the pump. Collect air samples for 4 minimum hours per sample, 6-8 hours is even better if possible. 5. Disconnect cassette and replace the protective covering back on both the inlet and outlet of the cassette, and wrap entire cassette in original packing and seal with tape. |