EXPEC 5310 Series Liquid Chromatography-Triple Quadrupole Mass Spectrometer (LC-MS/MS)

Overview

The EXPEC 5310 Series is a next-generation liquid chromatography–triple quadrupole mass spectrometer (LC-MS/MS) engineered for high-sensitivity, high-reproducibility quantitative analysis in regulated and research laboratories. It operates on the principle of electrospray ionization (ESI) or atmospheric pressure chemical ionization (APCI), followed by mass filtering in Q1, collision-induced dissociation (CID) in a pressurized axial-accelerated collision cell (Q2), and selective detection of product ions in Q3. This tandem mass spectrometry architecture enables highly specific multiple reaction monitoring (MRM) — the gold-standard acquisition mode for trace-level quantification in complex matrices. Designed for robustness under continuous operation, the system integrates hardware innovations including dual orthogonal ion sources, step-scan ion optics, and a multi-stage differential vacuum architecture to maximize ion transmission efficiency while maintaining long-term signal stability.

Key Features

• Advanced dual-mode ion source: E-Spray™ II independent dual ESI/APCI configuration with seamless switching, optimized ion yield, and enhanced matrix tolerance.
• Step Scan ion transmission optics: Improves duty cycle and overall ion utilization across wide mass ranges without sacrificing resolution or scan speed.
• Axial-accelerated collision cell: Enables rapid ion transit through the collision region, balancing high CID efficiency with minimal cross-talk and reduced memory effects.
• Dual RF power supply with closed-loop adaptive control: Ensures exceptional quadrupole mass stability and long-term calibration retention under variable environmental conditions.
• Heated, nitrogen-assisted desolvation interface: Precisely temperature-controlled gas flow and high-purity N₂ backflush significantly improve desolvation efficiency and reduce source contamination.
• Intelligent MRM method builder: Automates transition selection, dwell time allocation, and cycle time optimization — supporting up to hundreds of MRM transitions per run without compromising data quality.
• Integrated vacuum architecture: Combines turbomolecular pumps with optimized stage differential pumping to maintain stable operating pressures (<1×10⁻⁶ Torr in analyzer region) and ensure consistent ion transmission.

Sample Compatibility & Compliance

The EXPEC 5310 supports diverse sample types across biological fluids (plasma, urine, tissue homogenates), environmental extracts (water, soil, air particulates), food matrices (meat, dairy, produce), and pharmaceutical formulations. Its robust ion source design tolerates moderate levels of salts, phospholipids, and organic modifiers common in LC eluents. The instrument complies with international regulatory expectations for analytical instrumentation: full audit trail, electronic signature support, and role-based access control are embedded within the Mass Expert software suite. It meets FDA 21 CFR Part 11 requirements for electronic records and signatures, and its operational design aligns with GLP and GMP principles — including instrument qualification documentation templates (IQ/OQ/PQ), calibration log retention, and parameter change tracking.

Software & Data Management

Mass Expert is a fully localized Chinese-language workstation offering integrated instrument control, real-time data acquisition, quantitative processing, and customizable reporting. It features one-click autotune and mass calibration, reducing operator dependency on expert intervention. Method development tools include automated compound-dependent parameter optimization (e.g., declustering potential, collision energy) based on built-in spectral libraries. Quantitative workflows support internal standard calibration curves, QC sample integration, and batch processing with automatic outlier detection. All raw data files adhere to open mzML format standards, enabling interoperability with third-party analysis platforms. Audit trails record user actions, parameter modifications, and software updates with timestamps and operator IDs — essential for compliance-driven environments.

Applications

The EXPEC 5310 delivers validated performance in applications requiring low detection limits and high specificity: pesticide residue screening in agricultural commodities (per ISO 17025 and EU SANTE/11312/2021 guidelines); mycotoxin quantification in cereals; therapeutic drug monitoring (TDM) and biomarker discovery in clinical labs; doping agent analysis in sports medicine; forensic toxicology screening for controlled substances; and environmental monitoring of PFAS, pharmaceuticals, and endocrine disruptors in wastewater. Its flexible MRM scheduling and dynamic dwell time allocation make it suitable for both targeted quantitation and semi-targeted profiling studies.

FAQ

Is the EXPEC 5310 compliant with FDA 21 CFR Part 11?
Yes — Mass Expert provides full electronic signature capability, secure audit trails, and role-based permissions required for regulated bioanalytical and pharmaceutical labs.
Can the system operate with both ESI and APCI simultaneously?
No — the E-Spray™ II source supports rapid, software-controlled switching between ESI and APCI modes, but only one ionization mode is active per acquisition method.
What vacuum pump configuration does the instrument use?
It employs a two-stage vacuum system: a primary rotary vane pump coupled with a high-capacity turbomolecular pump, optimized for stable operation across extended duty cycles.
Does the software support custom report templates?
Yes — users can define report layouts, calculation formulas, pass/fail criteria, and export formats tailored to specific application needs (e.g., food safety testing reports compliant with GB standards).
Is remote monitoring or control supported?
Mass Expert supports secure network deployment with remote desktop access via IT-approved protocols; however, real-time instrument control over public networks is disabled by default for cybersecurity compliance.