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Agilent Technologies 7890 Series - NPD Solvent Quenching

Agilent Technologies 7890 Series
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80 Agilent 7890 Series Troubleshooting
3 Chromatographic Symptoms
NPD Solvent Quenching
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.

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