Agilent Technologies 7890 Series - TCD Peaks Have Negative Dip on Tail

88 Agilent 7890 Series Troubleshooting
3 Chromatographic Symptoms
TCD Peaks Have Negative Dip on Tail
• Check for leaks at the detector column adapter fitting. (See
“Checking for Leaks”.)
• Upgrade the detector to a passivated filament.