QDa has low sensitivity - WKB225823
Article number: 225823
SYMPTOMS
- 30% loss of sensitivity
- Loss is random among all samples
- For most samples, chromatogram peak shape is "spiky"
ENVIRONMENT
- ACQUITY QDa Mass Detector
- BioAccord System
- ACQUITY RDa Detector
CAUSE
Bad ESI probe spray and ionization
FIX or WORKAROUND
Replace the ESI probe.
ADDITIONAL INFORMATION
Parts:
- ESI Probe Assy, 250mm x 100µm (ACQUITY, AutoPurification, Alliance 2695) (700009641)
- ESI Probe Assy, 500mm x 100µm (ACQUITY) (700009642)
- ESI Probe Assy, 750mm x 100µm, ACQUITY (700009659)
- SFC Probe Assy, 200mm x 50µm (SFC Prep 15, Prep 100q) (700009771)
- Probe Assy, 750mm x 50µm (UPC²) (700009977)
id225823, Electrospray, QDA, RDA