42 Troubleshooting
3 Chromatographic Symptoms
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.