Agilent Technologies 5975T LTM GC/MSD, Troubleshooting And Maintenance Manual

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54 Troubleshooting and Maintenance Guide
3
Chromatographic Symptoms
Low Peak Area or Height (Low Sensitivity)
• If using an inlet in split mode, check the split ratio.
• Check for leaks. (See “Checking for Leaks” on page 99.)
• Check the inlet for contamination. (See “Contamination or
Carryover” on page 37.)
• Check each column and verify that it was cut and installed
properly at each end.
• Verify that the column type is correct.
• Perform column maintenance: Bake out contaminants,
replace the inlet guard column, and reverse and bake out the
column as needed.
• Verify that the liner type is appropriate for the sample.
• Check the supply gas purity.
• Check all trap indicators and dates.
• Verify that the method parameters are correct.
•
Check sample stability.
•
Check configured syringe size. Some syringe sizes are
specified at half-capacity. If the maximum syringe volume is
marked at half-height on the barrel, not at the top of the
barrel, enter
twice the labeled volume when configuring the
syringe size.