Thermo Fisher Trace DSQ Quadrupole Gas Chromatography-Mass Spectrometer (Used, Refurbished)

Overview

The Thermo Fisher Trace DSQ is a robust, entry-level quadrupole gas chromatography–mass spectrometry (GC-MS) system engineered for routine qualitative and quantitative analysis of volatile and semi-volatile organic compounds. Designed around a high-stability electron ionization (EI) source and a temperature-controlled quadrupole mass filter, the DSQ delivers reproducible spectral fidelity across its m/z 10–1000 range. Its architecture integrates seamlessly with the Trace GC Ultra platform, enabling precise retention time alignment and optimized peak capacity. The system operates under high-vacuum conditions maintained by a turbomolecular pump, with Thermo’s proprietary vacuum lock mechanism allowing rapid source exchange—critical for laboratories performing both EI and chemical ionization (CI) analyses or conducting frequent maintenance without venting the entire manifold. This design significantly reduces instrument downtime and preserves long-term mass axis stability.

Key Features

• Vacuum lock-enabled ion source: Enables tool-free removal and reinstallation of the ion box during EI/CI mode switching or cleaning—no system venting required.
• Curved lens ion optics: Minimizes neutral noise and improves signal-to-noise ratio by filtering scattered ions prior to mass filtering.
• Dual-mode ion source (EI/CI): Supports standard 70 eV electron ionization and low-energy chemical ionization; optional Pulse Positive/Negative CI (PPINCI) permits alternating polarity scans within a single run.
• Simultaneous full-scan and SIM acquisition: Acquires qualitative full-spectrum data while concurrently monitoring user-defined target ions—enabling single-injection confirmation and quantification.
• Temperature-resilient interface: GC-MS transfer line and ion source operate stably from 30 °C to 300 °C, accommodating thermally labile and high-boiling analytes.
• Integrated CTC Combi PAL autosampler: Provides programmable liquid-phase injection, thermal desorption compatibility, and precise syringe-based volume control (0.1–100 µL).

Sample Compatibility & Compliance

The Trace DSQ accepts samples introduced via split/splitless injection, purge-and-trap, headspace, or direct probe—supporting gases, liquids, solids (after solvent extraction), and derivatized matrices. It meets foundational requirements for method validation per ASTM D5845 (petroleum hydrocarbons), EPA Method 8270D (semivolatile organics), and USP (chromatography). While not pre-certified for 21 CFR Part 11 compliance out-of-box, the Xcalibur software environment supports audit trail configuration, electronic signatures, and secure user access controls when deployed on validated IT infrastructure—facilitating GLP/GMP-aligned workflows in regulated QC labs.

Software & Data Management

Data acquisition and processing are performed using Thermo Scientific Xcalibur 2.3 or later (included with refurbished units). The software provides real-time spectral deconvolution, library search against NIST/EPA/WHO mass spectral databases (≥100,000 entries), and customizable report templates compliant with ISO/IEC 17025 documentation standards. Raw data (.RAW files) are stored in vendor-neutral formats compatible with third-party chemometric tools (e.g., AMDIS, OpenChrom). All refurbished systems undergo full software reinstallation, license verification, and calibration file validation prior to shipment.

Applications

The DSQ is routinely deployed in environmental testing laboratories for PAHs, PCBs, pesticides, and VOCs in soil/water; in pharmaceutical QC for residual solvents (ICH Q3C) and extractables/leachables screening; in food safety labs for mycotoxins, flavor compounds, and adulterants; and in forensic toxicology for drug metabolite profiling. Its ppm-level detection limits—particularly under SIM mode—and consistent spectral match quality make it suitable for identification tasks where library matching confidence exceeds 85% (reverse fit) in complex biological or environmental extracts.

FAQ

Is this a factory-refurbished unit or dealer-refurbished?
This is a professionally refurbished system inspected and validated by SpectraLab Scientific’s certified service engineers—not a “as-is” used unit. All critical components (ion source, quadrupole, detector, GC inlet seals, column oven calibration) are functionally tested per Thermo’s OEM diagnostic protocols.
Does the 6-month warranty cover labor and parts?
Yes—the warranty includes onsite or depot-based labor, replacement parts, and remote diagnostics support. Consumables (columns, septa, filaments) are excluded per standard industry practice.
Can I upgrade to newer firmware or Xcalibur versions post-purchase?
Firmware updates are supported if the system meets minimum hardware requirements (e.g., Pentium 4+ CPU, 2 GB RAM, Windows 7 SP1 or later). Xcalibur version eligibility depends on Thermo’s current licensing policy for legacy instruments.
Are original manuals and certificates of calibration included?
Yes—each system ships with digital copies of the DSQ Operator’s Manual, GC Ultra Installation Guide, and a Certificate of Performance Verification documenting baseline noise, mass accuracy (±0.2 Da), and sensitivity (1 pg octafluoronaphthalene, S/N ≥ 50:1 in SIM mode).