Waters Xevo MRT Mass Spectrometer

Overview

The Waters Xevo MRT Mass Spectrometer is a high-performance, benchtop multi-reflecting time-of-flight (MRT-TOF) mass spectrometer engineered for uncompromised resolution, mass accuracy, and acquisition speed in liquid chromatography–mass spectrometry (LC-MS) workflows. Unlike conventional orthogonal-acceleration TOF or quadrupole-time-of-flight (Q-TOF) platforms, the Xevo MRT employs a precisely tuned ion optical architecture featuring an 8-reflection, 4-meter effective flight path within a compact vacuum chamber. This design enables consistent, high-resolution mass spectra across an extended m/z range — independent of acquisition rate — making it uniquely suited for high-throughput, information-rich untargeted analyses such as metabolomics, lipidomics, and biomarker discovery. The system delivers ≤500 ppb mass accuracy under routine LC-MS conditions and maintains 100,000 FWHM resolution even at 100 Hz transient acquisition rates, ensuring robust separation of isobaric and near-isobaric species in complex biological matrices.

Key Features

• Multi-Reflecting Time-of-Flight (MRT) analyzer with 8-stage ion reflection and 4-meter effective flight path — enabling intrinsic resolution independence from scan speed
• Simultaneous high resolution (100,000 FWHM), high mass accuracy (<500 ppb), and high acquisition speed (up to 100 Hz) without trade-offs
• Dual-gain analog-to-digital converter (ADC) architecture for extended dynamic range and long-term signal stability across diverse analyte concentrations
• Benchtop form factor with integrated vacuum system and optimized ion source geometry for rapid method deployment and minimal footprint
• Robust RF-only collision cell and energy-controlled fragmentation for reproducible MS/MS spectra with high duty cycle efficiency
• Compatibility with UPLC and ACQUITY systems for seamless integration into regulated and research-grade LC-MS environments

Sample Compatibility & Compliance

The Xevo MRT supports broad sample classes including small molecules, peptides, polar metabolites, lipids, and adducts — with demonstrated performance in plasma, serum, urine, tissue extracts, and cell lysates at endogenous concentrations. It complies with analytical requirements defined in ISO/IEC 17025 for testing laboratories and supports audit-ready data handling per FDA 21 CFR Part 11 when deployed with Waters Empower or waters_connect software configured for electronic signatures and audit trails. All calibration, tuning, and performance verification protocols align with ASTM E2916 and USP guidelines for analytical instrument qualification (AIQ). System suitability tests are fully scriptable and traceable, supporting GLP and GMP-aligned workflows in pharmaceutical development and clinical research settings.

Software & Data Management

Data acquisition, processing, and reporting are managed via waters_connect — Waters’ unified informatics platform designed for scalable, secure, and compliant LC-MS data handling. The platform natively supports mzML 1.1 (HUPO Proteomics Standards Initiative compliant) export, enabling interoperability with third-party tools including Mass Analytica™ MARS (metabolomics), Lipostar2 (lipidomics), and MassMetaSite (metabolite identification). A documented RESTful API allows programmatic access to raw data, peak lists, and metadata for custom scripting in Python, R, or MATLAB environments. The DATA Convert application provides batch conversion of .raw files to open formats (mzML, mzXML) with embedded metadata preservation. All processing steps — from centroiding and deconvolution to alignment and statistical filtering — are version-controlled and reproducible across instruments and laboratories.

Applications

The Xevo MRT excels in applications demanding simultaneous high resolution, high mass accuracy, and high throughput. It is routinely deployed in large-cohort population studies where statistical power depends on consistent quantitative precision across thousands of samples. Key use cases include: untargeted metabolite profiling in pharmacokinetic and toxicokinetic studies; structural characterization of unknown lipids in neurodegenerative disease models; detection of low-abundance post-translational modifications in phosphoproteomics; and real-time monitoring of bioreactor metabolites during upstream process development. Its ability to resolve isotopic fine structure at high m/z (e.g., C₃₀H₅₀O₅⁺ vs. C₂₉H₄₈O₆⁺) enables confident elemental composition assignment without prior knowledge — a critical advantage in discovery-phase research.

FAQ

How does MRT differ from standard TOF or Q-TOF mass analyzers?
MRT achieves resolution scaling through multiple ion reflections along a fixed physical path, eliminating the inverse relationship between resolution and acquisition speed inherent in linear TOF and many Q-TOF designs.
Is the Xevo MRT compliant with regulatory data integrity requirements?
Yes — when configured with waters_connect and appropriate security policies, it meets ALCOA+ principles and supports 21 CFR Part 11 compliance for electronic records and signatures.
Can I integrate third-party informatics tools with this instrument?
Yes — native mzML export, API access, and documented file structures enable seamless integration with open-source and commercial bioinformatics pipelines.
What is the typical mass range and sensitivity for small-molecule analysis?
The system operates effectively from m/z 50 to >2,000 with attomole-level sensitivity for representative pharmaceutical compounds under standard electrospray ionization conditions.
Does Waters provide application-specific method packages for metabolomics or lipidomics?
Yes — validated UPLC-MRT methods, spectral libraries, and processing templates are available for targeted and untargeted workflows, including support for HILIC, reversed-phase, and supercritical fluid chromatography separations.