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Hydrocarbon Contamination After Column Maintenance

ColumnRxi-5ms, 30 m, 0.32 mm ID, 0.25 µm (cat.# 13424)
SampleNo sample injected; instrument ran the method conditions with no injection.
Injectionsplitless (hold 0.5 min)
Liner:4.0 mm ID single taper inlet liner w/wool, IP deactivated (cat.# 22406)
Inj. Temp.:250 °C
Purge Flow:40 mL/min
Oven Temp.:50 °C (hold 5 min) to 320 °C at 30 °C/min (hold 10 min)
Carrier GasHe, constant flow
Flow Rate:5.0 mL/min
DetectorFID @ 330 °C