Npd Solvent Quenching - Agilent Technologies 7890 Series Troubleshooting Manual

3
Chromatographic Symptoms

NPD Solvent Quenching

80
If the baseline does not recover after a solvent peak, try the
following:
• Turn hydrogen off/on around the solvent peak.
• Use nitrogen as the makeup gas.
• Set the total column flow and makeup gas to less than
10 mL/min.
• Increase the air flow by 10 mL/min.
• Increase the detector temperature to 325 °C.
• Implement an Agilent Dean's switch solvent vent solution.
Agilent 7890 Series Troubleshooting