Agilent Technologies 7890 Series Troubleshooting

Chromatographic Symptoms 3
Agilent 7890 Series Troubleshooting 55
Sample Decomposition in Inlet/Missing Peaks
• Lower the inlet temperature.
• Check for air or water in the carrier gas; verify gas purity and
functionality of traps.
• Verify that the liner is appropriate for the sample being run.
• Perform complete inlet maintenance: Replace all consumable
parts and bake out the inlet.
• Install a deactivated liner (if liner is used).
• Check for leaks at the septum, liner, and column fittings. (See
“Checking for Leaks”.)
• Install an Agilent Direct Connect liner.
• Use a pulsed pressure method for quicker sample transfer to
column.
• Bake out the inlet. See the following:
• To Bakeout Contaminants from the Split/Splitless Inlet
• To Bakeout Contaminants from the Multimode Inlet
• To Bakeout Contaminants from the Purged Packed Inlet
• To Bakeout Contaminants from the COC Inlet
• To Bakeout Contaminants from the PTV Inlet
• To Bakeout Contaminants from the VI Inlet
• Clean the inlet. See the following:
• To Clean the Split/Splitless Inlet
• To Clean the Multimode Inlet
• To Clean the Purged Packed Inlet
• To Clean the COC Inlet
• To Clean the Septumless Head on the PTV Inlet
• To Clean the Septum Seat in the Septum Head Assembly
of the PTV Inlet
• To Clean the VI

Agilent Technologies 7890 Series Specifications

General

Brand	Agilent Technologies
Model	7890 Series
Category	Laboratory Equipment
Language	English