- Customer sees reduced signal in methods.
- Waters SSTM shows poor signal.
Column not in correct position in APGC ion chamber.
Ferrule holding column at heater transfer line in GC oven has become loose, and column end had worked back into heater transfer line.
FIX or WORKAROUND
Replace ferrule at heater transfer line fitting and fit column according to the user guide. Atmospheric Pressure GC Operator’s Guide Supplement.
Ensure you have the correct size ferrule fitted for your column.