Unstable beam on ESI MS - WKB23615
Article number: 23615
SYMPTOMS
- Peaks are splitting randomly down to baseline
- Flat regions in full scan spectra
- Spray becomes more stable as the flow rate increases
- Leak at sample syringe connection to selector valve
- System pressure increases significantly (e.g., 1000 psi) when LC flow is switched from Waste to LC
ENVIRONMENT
- Quattro Micro
- TQ Detector
- Xevo TQD
- Xevo TQ MS
- Xevo TQ-S
- Xevo G2-XS
- Xevo TQ-S micro
- Xevo TQ-XS
- SYNAPT XS
- SQ Detector 2
- SELECT SERIES Cyclic IMS
CAUSE
Unstable spray from ESI probe due to partially blocked capillary or incorrectly built probe
FIX or WORKAROUND
Rebuild the probe, including the PEEK union and capillary, or replace the capillary if tool-free ESI probe.
ADDITIONAL INFORMATION
id23615, A-SQ, CYCIMS, Electrospray, QUMICRO, SQD2, SYNAPTXS, SYNG2HD, SYNG2HDMAL, SYNG2MS, SYNG2MSMAL, TQD, TQDIVD, XEVOG2XSQT, XEVOG2XSTF, XEVOTQ, XEVOTQA, XEVOTQD, XEVOTQDIVD, XEVOTQIVD, XEVOTQS, XEVOTQSIVD, XEVOTQSMIC, XEVOTQXS, XEVTQSMIVD, XEVTQXSIVD