8 Maintaining the COC Inlet
To Bakeout Contaminants from the COC Inlet
Maintaining Your GC 137
To Bakeout Contaminants from the COC Inlet
1 Set the column flow to the normal operating value, or set the capillary column gas velocity
to 30 cm/s.
2 Purge the column with carrier flow for at least 10 minutes before heating the oven.
3 Set the inlet mode to Oven Track.
4 If the column is attached to the detector, set the detector 25 °C above normal operating
temperature.
If the column is not attached to the detector, cap the detector fitting.
Be careful! The oven, inlet, and/or detector may be hot enough to cause burns. If they are hot,
wear heat-resistant gloves to protect your hands.
5 Set the column oven 25 °C above the GC method final oven temperature to bake
contaminants out of the inlet. Do not exceed the column manufacturer’s maximum
temperature limit.
6 Bakeout for 30 minutes or until the detector baseline is free of contamination peaks.
To Next Page
Loading...
