LC-MS Service & Repair

LC-MS systems pair liquid chromatography with mass spectrometry to separate and identify compounds with enough precision that small shifts in the ion source, vacuum system, or calibration can compromise results. ILS catches that drift before it reaches your data, and repairs failures before they cost a run.

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How ILS Diagnoses and Resolves Common LC-MS Issues

LC-MS issues rarely have a single clear cause, and the visible symptom doesn’t always point to the actual source. ILS traces each issue back to its origin before any part is replaced, whether that’s a scheduled check or an active repair.

Ion Source Inspection and Contamination Repair

The ion source accumulates residue with routine use, gradually reducing ionization efficiency, and shows up as sensitivity loss and inconsistent quantitation before it causes an outright failure.

ILS inspects and cleans the ion source at every scheduled visit, and when contamination has already caused a failure, confirms it against system suitability and retention time trends before recommending replacement.

Vacuum System Leak Detection and Rebuild

Vacuum leaks destabilize the pressure the ion source and mass analyzer depend on, and often present as a contamination or calibration issue instead of what they actually are.

ILS engineers check every fitting and connection directly rather than assuming the more common cause, isolating the real leak before any part gets replaced.

Mass Calibration Verification and Retuning

Calibration drifts independently of any hardware failure and can mask an ion source or vacuum issue while simultaneously producing its own error.

ILS verifies mass calibration against factory specification at every visit, whether that’s a routine maintenance check or the final step of a repair.

Column and Chromatography Troubleshooting

A degrading column, a mobile-phase issue, or a flow-path problem upstream of the ion source all show up as peak fronting, tailing, or retention-time drift, symptoms that point to the LC side of the system, not the mass spec.

ILS traces these symptoms to the specific chromatographic component responsible, rather than assuming a mass-spec issue because the peak appears distorted in the final trace.

Our LC-MS Service Capabilities

Diagnose Before Replacing

Our engineers identify the actual point of failure before replacing any part, checking system status and performance data first.

Train Across Platforms

Our engineers train across mixed Sciex, Agilent, and Shimadzu configurations, taking a vendor-agnostic approach to every system we service.

Schedule Around Usage

We set the visit frequency based on real run volume and instrument usage, not a fixed manufacturer interval.

Retune After Repair

We retune every system after a repair, confirming sensitivity returns to full factory specification.

LC-MS Systems We Service

Sciex LC-MS platforms run across clinical toxicology, pharmaceutical, food and beverage, and environmental testing labs, and a large share of them run on a Shimadzu or Agilent LC front-end instead of Sciex’s own.