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download/files/LCQ Deca_Duo Hardware Troubleshooting_8601.pdf

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<strong>Troubleshooting</strong> the API2 Probe<br />

◗ Contamination: Wipe spray shield around heated capillary<br />

Wipe out ESI probe flange<br />

Flush the ESI probe<br />

◗ Erratic spray: Sample tube<br />

Sheath gas flow<br />

◗ Spray Current too high: Problematic mixture of solvents/sample/etc.<br />

◗ Erratic Spray Voltage: Spray current at maximum<br />

◗ Overall solution for 90% of source related Problems:<br />

� Good maintenance<br />

(especially with the sample tube)<br />

� Use of divert valve

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