Waters Xevo TQ-S micro Triple Quadrupole Mass Spectrometer

Overview

The Waters Xevo TQ-S micro is a compact, high-performance triple quadrupole (QqQ) mass spectrometer engineered for robust, reproducible quantitative analysis in regulated and research laboratories. Operating on the principle of tandem mass spectrometry—where precursor ions are selected in Q1, fragmented in the collision cell (Q2), and product ions are analyzed in Q3—the instrument delivers exceptional specificity and sensitivity for targeted quantitation across diverse sample matrices. Its design prioritizes analytical stability without compromising footprint: the Xevo TQ-S micro occupies significantly less bench space than conventional QqQ systems while maintaining the core architecture and vacuum performance of the established Xevo platform. This enables consistent low-concentration detection and quantification over extended acquisition periods—even under high-throughput conditions or in the presence of complex biological, environmental, or food-derived backgrounds.

Key Features

• Compact form factor optimized for space-constrained labs without sacrificing analytical rigor or vacuum integrity.
• Z-Spray™ ion source architecture ensures stable electrospray ionization (ESI) and atmospheric pressure chemical ionization (APCI), with efficient neutral molecule rejection and enhanced ion transmission through the sampling cone.
• StepWave™ off-axis ion focusing technology provides passive removal of neutral contaminants and background gases, coupled with active ion steering into the mass analyzer—resulting in improved signal-to-noise ratio, long-term intensity stability, and reduced maintenance frequency.
• Full compatibility with Waters’ universal ion source portfolio—including UniSpray™, APGC™, ionKey/MS™, ASAP™, and nanoflow ESI—enabling method transfer flexibility and application-specific optimization.
• Seamless integration with ACQUITY UPLC® platforms (H-Class PLUS, I-Class PLUS, UPC², M-Class) and gas chromatography systems, supporting both liquid and gas-phase separation workflows.

Sample Compatibility & Compliance

The Xevo TQ-S micro demonstrates proven performance in challenging quantitative applications, including residue analysis in food matrices. In validation studies targeting glyphosate in cucumber extracts, matrix-matched calibration curves (n > 40 injections) exhibited back-calculated concentrations within ±20% of nominal values—fully compliant with the European Commission’s SANTE/11813/2017 guidelines for pesticide residue analysis. The system supports full traceability and audit readiness per GLP and GMP requirements when operated with MassLynx™ software configured for FDA 21 CFR Part 11 compliance—including electronic signatures, secure user access controls, and immutable audit trails for all acquisition and processing events.

Software & Data Management

Controlled via Waters MassLynx™ 4.2 or later, the Xevo TQ-S micro supports method development, acquisition, processing, and reporting within a single validated software environment. Quantitative workflows leverage TargetLynx™ XS for automated peak integration, calibration curve fitting (linear, quadratic, weighted), and statistical evaluation (R², %CV, LLOQ/ULOQ). Raw data files adhere to open, vendor-neutral formats (e.g., .raw) compatible with third-party reprocessing tools. All metadata—including instrument parameters, sequence logs, and processing history—is embedded and preserved, enabling full data lineage reconstruction during regulatory inspections.

Applications

• Quantitative residue analysis in food and agricultural commodities (e.g., pesticides, mycotoxins, veterinary drugs) per EU SANTE, USDA, and CODEX standards.
• Pharmaceutical impurity profiling and stability-indicating assays under ICH Q2(R2) guidance.
• Clinical toxicology screening for small-molecule biomarkers, drugs of abuse, and endogenous metabolites in plasma, urine, and dried blood spots.
• Environmental monitoring of persistent organic pollutants (POPs), PFAS, and pharmaceuticals in wastewater and soil extracts.
• Method transfer between legacy Xevo TQ-S systems and the micro variant—leveraging identical mass filtering logic, collision energy algorithms, and calibration protocols.

FAQ

Is the Xevo TQ-S micro suitable for regulated bioanalysis under FDA or EMA guidelines?
Yes—when deployed with MassLynx software configured for 21 CFR Part 11 compliance and operated within documented SOPs, it meets key requirements for method validation, data integrity, and audit readiness in GLP/GCP environments.
Can the Xevo TQ-S micro be coupled with GC systems?
Yes—it supports direct interface with gas chromatographs via standard API sources (e.g., APCI, APGC) and is validated for volatile and semi-volatile compound analysis.
Does the instrument support retrospective data reprocessing?
Yes—raw data files retain full spectral and timing information, allowing re-extraction of transitions, adjustment of dwell times, or recalibration without reacquisition.
What level of maintenance is required for the StepWave ion optics?
StepWave components are designed for extended operational life; routine cleaning intervals align with standard QqQ service schedules—typically every 3–6 months depending on sample load and matrix complexity.
Is ionKey/MS microflow technology supported?
Yes—the Xevo TQ-S micro natively supports ionKey/MS interfaces, enabling nanoliter-per-minute flow rates with enhanced sensitivity and reduced matrix effects for proteomics and metabolomics applications.