The proper method for calibrating a personal air sampling pump involves using a calibrated primary standard, such as a dry gas meter or a bubble flow meter, to verify the pump's flow rate. Calibration is essential for ensuring accurate measurement of worker exposure to airborne contaminants. The process begins by assembling the sampling train, which includes the air sampling pump, tubing, a sampling media (e.g., filter cassette or sorbent tube), and a calibrated primary standard. The sampling media should be the same type used during actual air sampling to account for any backp....
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