Low sensitivity with QDa - WKB255886

SYMPTOMS

• Low sensitivity with QDa
• Calibrant works as expected

ENVIRONMENT

• ACQUITY QDa Mass Detector

CAUSE

Dirty ion optics

FIX or WORKAROUND

1. Clean/replace front end with refurb (EEE010377).
2. Clean segmented quad.

ADDITIONAL INFORMATION

Click here to review the source cleaning procedures within the ACQUITY QDa Detector Overview and Maintenance Guide section 3.6.

Follow the appropriate section of the video on www.waters.com
Note that the video follows the RADIAN ASAP procedures, but removing, disassembling, cleaning, and refitting the source components is identical to the QDa Detector.

Removal and disassembly of source components 00:02:34 - 00:06:52 mins

Cleaning source components 00:06:52 - 00:11:12 mins

Refitting source components 00:11:12 - 00:15:23 mins