Thermo Scientific™ Orbitrap Exploris™ 120 Liquid Chromatography Mass Spectrometer

Overview

The Thermo Scientific™ Orbitrap Exploris™ 120 is a benchtop high-resolution accurate-mass (HRAM) liquid chromatography mass spectrometer (LC-MS) engineered for robust, high-throughput targeted screening and quantitation in regulated and discovery-oriented laboratories. Built upon the proven quadrupole-Orbitrap architecture, it integrates a high-field Orbitrap mass analyzer with an optimized dual-pressure linear ion trap and a precision-conjugated hyperbolic quadrupole. This configuration enables simultaneous high resolution, high mass accuracy, rapid polarity switching, and exceptional duty cycle efficiency—critical for complex biological matrices, environmental extracts, and pharmaceutical formulations. The system operates on the principle of electrostatic trapping and Fourier-transform ion cyclotron resonance–derived detection, delivering sub-part-per-million mass measurement stability without external recalibration during extended acquisition windows.

Key Features

• High-field Orbitrap analyzer: Delivers up to 120,000 resolution (FWHM) at m/z 200 while maintaining 22 Hz full-scan speed—enabling deep coverage of co-eluting analytes without peak distortion or undersampling.
• Real-time internal calibration: Integrated EASY IC™ (Electron-Activated Yttrium Ion Calibration) source continuously corrects the mass axis during acquisition; achieves <1 ppm RMS mass drift over 24 hours and ≤1 ppm deviation across five consecutive days—essential for longitudinal quantitative studies and multi-batch workflows.
• Dual-polarity switching at 1.4 Hz: Acquires both positive- and negative-ion mode spectra within a single LC injection at 60,000 resolution—eliminating method duplication, reducing total analysis time, and preserving chromatographic integrity.
• Optimized quadrupole design: Conjugated hyperbolic rods combined with dynamic RF voltage control enable narrow isolation windows (down to 0.4 Da) with minimal transmission loss—enhancing selectivity for targeted MS/MS without sacrificing sensitivity.
• Expanded scan mode flexibility: Supports data-dependent acquisition (DDA), data-independent acquisition (DIA), targeted SIM, and targeted MS/MS—all accessible via intuitive method templates in Thermo Scientific™ Tune software.
• Benchtop footprint with enterprise-grade reliability: Compact mechanical layout minimizes footprint (<0.8 m²) while maintaining vacuum integrity, thermal stability, and contamination-resistant ion optics—reducing downtime and extending mean time between maintenance (MTBM).

Sample Compatibility & Compliance

The Orbitrap Exploris 120 interfaces seamlessly with standard UHPLC systems (e.g., Thermo Scientific™ Vanquish™) and supports electrospray ionization (ESI), heated electrospray ionization (H-ESI), and atmospheric pressure chemical ionization (APCI) sources. It accommodates a broad range of sample types—including plasma, tissue homogenates, cell lysates, water extracts, and synthetic small molecules—with demonstrated performance in matrices exhibiting high salt content or phospholipid load. The platform complies with key regulatory requirements for analytical instrumentation: audit-trail-enabled software adheres to FDA 21 CFR Part 11 principles; mass calibration traceability aligns with ISO/IEC 17025 metrological guidelines; and instrument qualification protocols support GLP and GMP environments per ICH Q2(R2) and USP <1225> validation frameworks.

Software & Data Management

Data acquisition and processing are unified under Thermo Scientific™ Chromeleon™ Chromatography Data System (CDS) and Compound Discoverer™ 3.3 software suites. Chromeleon provides validated, role-based user access control, electronic signature support, and integrated instrument control—including automated tuning, calibration, and QC reporting. Compound Discoverer enables semi-automated feature detection, alignment, annotation, and statistical filtering for untargeted workflows. All raw data files (.raw) are stored in vendor-neutral, open-format repositories compatible with third-party tools (e.g., Skyline, XCMS Online, OpenMS). Full audit trails—including parameter changes, calibration events, and reprocessing history—are retained with immutable timestamps and operator attribution—ensuring full traceability for regulatory submissions.

Applications

• Pharmaceutical development: Residual solvent quantitation, extractable/leachable profiling, and impurity identification per ICH Q3 guidelines.
• Clinical research: Targeted metabolomics and lipidomics in biofluids using stable-isotope dilution assays (SIDA) with CVs <8% across 500+ analytes.
• Environmental monitoring: Multi-residue pesticide screening in food and water at EU SANTE/2023/1283 compliance levels.
• Proteomics core facilities: High-speed DDA/DIA workflows for label-free quantitation of >5,000 proteins per run with ≤2% missing values across replicates.
• Academic discovery labs: Rapid method development for novel natural product dereplication and structural elucidation via MSⁿ fragmentation trees.

FAQ

What is the maximum achievable resolution on the Orbitrap Exploris 120, and under what conditions is it specified?
The system achieves up to 120,000 resolution (FWHM) at m/z 200, measured in full-scan mode with standard acquisition settings and optimized AGC target values.
Does the instrument support real-time mass recalibration during acquisition?
Yes—the integrated EASY IC™ internal calibration source performs continuous mass axis correction without interrupting data collection, enabling <1 ppm RMS drift over 24 hours.
Can polarity switching be performed at high resolution without sensitivity penalty?
Yes—dual-polarity switching at 1.4 Hz is fully supported at 60,000 resolution with no measurable signal suppression relative to single-polarity operation.
Is the system compliant with FDA 21 CFR Part 11 requirements?
Yes—Chromeleon CDS includes electronic signatures, audit trail logging, and role-based permissions configured for Part 11 compliance in regulated environments.
What LC systems are validated for use with this instrument?
The Orbitrap Exploris 120 is factory-validated with Thermo Scientific™ Vanquish™ UHPLC systems; it also supports third-party LC platforms via standard analog/digital I/O and remote API integration.