Chromatographic Symptoms 3
Agilent 7890 Series Troubleshooting 77
FPD Low Peak Areas
• Check the flow settings, then measure the actual detector
flows. (See “To Measure a Detector Flow”.)
• Perform complete inlet maintenance: Replace all consumable
parts and bake out the inlet.
• Perform column maintenance: Bake out contaminants,
remove the contaminated length of column near the inlet,
and reverse and bake out the column as needed.
• Verify that the column is installed properly.
• Consider the filter type (sulfur or phosphorus).
• Check the system for leaks. (See “Checking for Leaks”.)
• Verify that the method settings are appropriate.
• Check the flow rates.
• Check the makeup gas type.
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