AB SCIEX LC-M3 MicroLC Liquid Chromatograph (Refurbished)

Overview

The AB SCIEX LC-M3 MicroLC is a precision-engineered microflow liquid chromatography system designed specifically for integration with triple quadrupole and QTRAP mass spectrometers. Built on SCIEX’s legacy of high-performance LC-MS workflows, the M3 MicroLC employs low-dead-volume capillary flow paths, dual-gradient pumping with active solvent selection, and real-time pressure monitoring to deliver exceptional retention time stability and peak shape reproducibility at flow rates ranging from 0.5 µL/min to 50 µL/min. Its architecture supports both reversed-phase and hydrophilic interaction liquid chromatography (HILIC), enabling robust separation of polar metabolites, peptides, and small-molecule pharmaceuticals in complex biological matrices. Unlike conventional analytical-scale HPLC systems, the M3 MicroLC minimizes sample dilution and maximizes analyte transfer efficiency to the ion source—critical for achieving sub-pg/mL detection limits in quantitative bioanalysis.

Key Features

• Microflow dual-gradient pumping system with integrated degassing and pulse-dampening for stable flow control down to 0.5 µL/min
• Integrated autosampler with 120-position vial capacity, needle-in-loop injection, and programmable wash protocols to minimize carryover (<0.005%)
• Column oven with precise temperature control (5–85 °C ±0.2 °C) and low thermal mass design for rapid equilibration
• On-board solvent selection valve supporting up to six mobile phases per gradient method
• Real-time pressure monitoring with automatic fault detection and system shutdown protection
• SCIEX OS-compatible firmware with embedded method validation flags and audit-ready event logging

Sample Compatibility & Compliance

The LC-M3 MicroLC is routinely deployed in regulated bioanalytical laboratories performing PK/PD studies, biomarker quantification, and clinical trial sample analysis. It complies with instrument qualification requirements under FDA 21 CFR Part 11 when operated with validated SCIEX OS software and appropriate procedural controls. The system supports IQ/OQ documentation packages aligned with ASTM E2500-13 and ISO/IEC 17025:2017 for method transfer and equipment verification. All fluidic components—including PEEKsil tubing, stainless-steel pump heads, and ceramic injector rotors—are chemically resistant to common LC solvents (acetonitrile, methanol, aqueous ammonium formate/acetic acid buffers) and compatible with extended column lifetimes (>2,000 injections under typical microflow conditions).

Software & Data Management

The LC-M3 MicroLC operates exclusively under SCIEX OS v2.0 or later, providing synchronized control of LC parameters and MS acquisition via direct API communication. Method templates include pre-configured microflow gradient profiles optimized for C18, C8, and HILIC columns (75–150 µm ID). Data acquisition supports raw file export in .wiff format, with built-in tools for peak integration, calibration curve fitting (linear/log-linear with 1/x² weighting), and QC sample trending. Audit trails record all method modifications, sequence changes, and user logins with timestamped digital signatures. Electronic records are retained in accordance with ALCOA+ principles and support retrospective review during GLP or GMP audits.

Applications

• Quantitative analysis of endogenous steroids and vitamin D metabolites in serum using microflow LC-MS/MS
• High-throughput peptide mapping of monoclonal antibodies with online digestion coupling
• Metabolomic profiling of cerebrospinal fluid (CSF) with minimal sample volume (≤10 µL)
• Therapeutic drug monitoring (TDM) for narrow-therapeutic-index agents in pediatric oncology
• Impurity profiling of oligonucleotide therapeutics under ICH Q5 and Q6 guidelines

FAQ

Is this unit fully refurbished and performance-verified?
Yes. Each LC-M3 MicroLC undergoes full hardware inspection, pump flow calibration, injector precision testing, and system suitability assessment per SCIEX Application Note AN-249 before release.
Does the system include original manufacturer warranty?
No. As a refurbished instrument, it carries a 12-month limited hardware warranty covering defects in materials and workmanship, administered by the authorized refurbishment partner.
Can the LC-M3 be integrated with non-SCIEX mass spectrometers?
It can be operated in external trigger mode via TTL signal output; however, full bidirectional synchronization and method-level interoperability require SCIEX Triple Quad or QTRAP platforms.
What documentation is provided with the system?
Users receive a Certificate of Refurbishment, system suitability test report, IQ/OQ checklist, and electronic copies of operation manuals and safety data sheets.
Are spare parts and consumables still available?
Yes. All critical consumables—including microflow column frits, nanoViper fittings, and pump seal kits—are stocked globally through SCIEX distribution channels and remain supported through 2027.