Thermo Scientific ISQ LT Single Quadrupole GC-MS System

Overview

The Thermo Scientific ISQ LT Single Quadrupole GC-MS System is a purpose-engineered solution for laboratories requiring high-throughput, robust, and reproducible qualitative and quantitative analysis of volatile and semi-volatile organic compounds. Built upon a proven quadrupole mass filter architecture, the ISQ LT operates on electron ionization (EI) and optional chemical ionization (CI) principles, delivering precise mass filtering with unit mass resolution across a mass range of 1.2–1100 u. Its core innovation lies in the ExtractaBrite™ ion source — a thermally stable, self-aligning design that enables rapid, vacuum-intact source maintenance without venting the mass spectrometer. This eliminates system downtime associated with traditional source cleaning or replacement, directly supporting uninterrupted productivity in regulated and high-sample-volume environments such as environmental testing labs, food safety screening facilities, forensic toxicology units, and pharmaceutical QC/QA departments.

Key Features

• Vacuum-intact ion source exchange: Replace or clean the ExtractaBrite™ ion source without breaking vacuum — reducing instrument downtime by up to 90% compared to conventional systems.
• Extended turbo molecular pump: Provides enhanced pumping speed and stability, ensuring consistent vacuum performance during rapid GC gradients and extended run times.
• Simultaneous full-scan and SIM acquisition: Enables comprehensive compound identification (full scan) and high-sensitivity quantitation (t-SIM or AutoSIM) within a single injection — eliminating method duplication and improving data integrity.
• Intelligent dual-filament assembly: Ensures long-term emission stability and automatic filament switching to maximize operational uptime and signal reproducibility.
• S-shaped ion transmission path: Reduces noise through effective neutral and photon rejection, contributing to improved signal-to-noise ratios and lower method detection limits (MDLs).
• Modular inlet compatibility: Supports split/splitless, programmed temperature vaporizing (PTV), large-volume injection (LVI), backflush, thermal desorption, purge-and-trap, and SPME interfaces — enabling method flexibility without hardware reconfiguration.

Sample Compatibility & Compliance

The ISQ LT demonstrates broad applicability across sample matrices including water, soil extracts, biological fluids, food homogenates, and air sampling media. It meets routine compliance requirements for EPA Methods 502.2, 524.4, 8260D, 8270E, and ASTM D7011, and supports workflows aligned with ISO/IEC 17025 accreditation. When operated with Chromeleon™ Simply Intelligent™ or Xcalibur™ (configured with audit trail and electronic signature modules), the system satisfies 21 CFR Part 11 requirements for data integrity in pharmaceutical and clinical research settings. Its design adheres to IEC 61010-1 safety standards and incorporates hardware-level interlocks for detector and vacuum system protection.

Software & Data Management

Three dedicated software platforms are supported: Xcalibur™ for fundamental research and method development; TraceFinder™ for targeted screening in environmental, food, and forensic applications — featuring automated peak detection, library matching, and customizable reporting templates; and Chromeleon™ Simply Intelligent™ for regulated QA/QC environments, offering role-based access control, electronic signatures, and fully traceable audit logs. All platforms support direct integration with LIMS via ASTM E1384 or HL7 protocols. Raw data files (.RAW) are stored in vendor-neutral formats compatible with third-party reprocessing tools, ensuring long-term data accessibility and interoperability.

Applications

The ISQ LT delivers validated performance in pesticide residue analysis in fruits and vegetables (AOAC 2007.01), polycyclic aromatic hydrocarbon (PAH) quantification in soil per EPA 8270E, residual solvent testing in pharmaceutical intermediates (ICH Q3C), and drug metabolite profiling in urine using deuterated internal standards. Its sensitivity and dynamic range also support emerging applications such as microplastic additive screening (e.g., phthalates, bisphenols) and flavor/aroma compound profiling in beverages. The system’s compatibility with TriPlus RSH and TriPlus 300 HS autosamplers further enables unattended analysis of 192+ samples per sequence under GLP-compliant conditions.

FAQ

Does the ISQ LT require venting to replace the ion source?
No — the ExtractaBrite™ ion source is designed for vacuum-intact removal and reinstallation, preserving the high-vacuum state of the mass analyzer.
Can the ISQ LT be upgraded to support chemical ionization?
Yes — CI functionality is available as a factory-installed option, including dedicated CI gas inlets and optimized source housing.
What GC models are certified for seamless integration with the ISQ LT?
The system is fully compatible with Thermo Scientific TRACE 1300 Series, TRACE 1310, TRACE GC Ultra, and TriPlus RSH/TriPlus 300 HS autosamplers.
Is 21 CFR Part 11 compliance natively supported?
Audit trail, electronic signatures, and user access controls are enabled via Chromeleon™ Simply Intelligent™ or Xcalibur™ when deployed with appropriate security configuration and administrative oversight.
What is the standard warranty coverage?
The ISQ LT ships with a 12-month limited hardware and software warranty, including remote diagnostics support and access to Thermo Fisher’s global application scientist network.