Correcting Retention Time Differences Between Runs
Possible Cause
Solution
Unstable carrier gas flow
controller/regulator
Check the pneumatics for leaks. If necessary, replace the
flow controller/ regulator.
Column contamination or
degradation
Condition or replace the column.
Injector leaks
Replace the septum at regular intervals. Check that the
septum nut and capillary column nut are tight.
If the equipment is used in a manner not specified in this manual, the
protection provided by the equipment may be impaired.
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Summary of Contents for 4000 GC
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