D5769_12

Ensure that the gas chromatographic and mass spectrometer operating conditions are identical to those used for calibration, that the system is properly calibrated, and that all of the criteria in Section 9 and 10 of the written standard are met. Transfer a sufficient quantity of the chilled sample containing the appropriate internal standards from Section 11 of the written standard to fill a gas chromatographic auto sampler vial and seal it with a leak-free septum cap. Place the sample vial on the auto sampler and start the analysis.