Thermo Scientific Accela UHPLC System

Overview

The Thermo Scientific Accela UHPLC System is an ultra-high-performance liquid chromatograph engineered for precision, speed, and method robustness in demanding analytical environments. Built upon a dual-mode architecture, it seamlessly bridges conventional HPLC and UHPLC workflows—supporting both 3–5 µm and sub-2 µm particle-packed columns without hardware reconfiguration. Its core innovation lies in the proprietary Flow Feedback Control (FFC) technology, which dynamically adjusts check valve timing and pump output efficiency based on real-time solvent compressibility measurements. Unlike fixed-parameter piston pumps, FFC enables continuous compensation across pressure gradients (up to 1250 bar) and mobile phase compositions, delivering exceptional flow and gradient accuracy (≤±0.5%) across the entire operational envelope. This eliminates reliance on passive pulse dampeners while maintaining baseline stability—critical for coupling with high-speed mass spectrometers such as ion traps, quadrupoles, and Orbitrap analyzers.

Key Features

• Four-Solvent Quaternary Pump Architecture: Enables flexible method development, multi-method scheduling, and complex ternary/quaternary gradient programming—ideal for method scouting, impurity profiling, and multi-analyte quantitation.
• Ultra-Low Gradient Delay Volume (≤70 µL): Minimizes dwell time variability, ensuring reproducible retention times and enabling rapid gradient cycling (<1 min total run time) even with narrow-bore or microflow columns.
• Pressure-Robust Flow Delivery: Maintains ≤±0.5% flow accuracy from 0.001 to 2.000 mL/min and across 1–1250 bar backpressure—validated per ISO 11607-2 and ASTM D7415 protocols for pump performance certification.
• Non-Contact Solvent Sensing: Integrated pressure transducers and thermal conductivity sensors operate outside the fluid path, eliminating chemical compatibility limitations and drift caused by solvent-induced sensor fouling or swelling.
• Modular Thermal Management: Independent column oven, autosampler cooling, and detector compartment temperature control (5–85 °C, ±0.1 °C stability) ensure retention time reproducibility under GLP/GMP-compliant conditions.

Sample Compatibility & Compliance

The Accela system supports a broad range of sample matrices—including biological fluids (plasma, urine), pharmaceutical formulations, environmental extracts, and synthetic intermediates—when paired with compatible columns (C18, HILIC, phenyl-hexyl, SEC, etc.) and detectors (UV-Vis, fluorescence, CAD, or MS). It complies with key regulatory frameworks governing analytical instrumentation: FDA 21 CFR Part 11 (electronic records/signatures), EU Annex 11 (computerized system validation), and ICH Q2(R2) guidelines for method validation. All firmware and embedded software modules support audit trail generation, user access controls, and electronic signature enforcement—fully traceable for inspection readiness. The system’s mechanical design adheres to IEC 61010-1 safety standards and meets CE/UL certification requirements for laboratory use.

Software & Data Management

Controlled via Thermo Scientific Chromeleon Chromatography Data System (CDS) 7.3 or later, the Accela integrates natively with instrument method templates, sequence scheduling, and automated calibration workflows. Chromeleon supports full 21 CFR Part 11 compliance—including role-based permissions, electronic signatures with biometric or token-based authentication, and immutable audit trails for all acquisition, processing, and reporting events. Raw data files (.RAW) are stored in vendor-neutral formats compatible with third-party processing tools (e.g., Compound Discoverer, SimGlycan, Skyline). For high-throughput labs, optional integration with Thermo Scientific SampleManager LIMS enables sample tracking, result dissemination, and QC flagging aligned with ISO/IEC 17025 quality management systems.

Applications

• Pharmaceutical Development: Rapid forced degradation studies, stability-indicating assays, and peptide mapping with sub-second peak resolution—reducing method development cycles by up to 60% compared to legacy HPLC platforms.
• Metabolomics & Proteomics: Coupled with LTQ Orbitrap or Exactive MS systems, Accela delivers >12 data points per chromatographic peak (FWHM <1 s), preserving spectral fidelity during fast LC gradients required for large-scale biomarker discovery.
• Quality Control & Release Testing: Validated for USP , EP 2.2.46, and JP 6.05 monographs—supporting simultaneous assay, related substances, and residual solvent analysis in a single run.
• Environmental & Food Safety: Multi-residue pesticide screening in fruits/vegetables using QuEChERS extraction followed by UHPLC-MS/MS with cycle times under 3 minutes per sample.

FAQ

Is the Accela system compatible with existing Thermo MS instruments?
Yes—the Accela LC is fully interoperable with Thermo Scientific mass spectrometers including TSQ Quantum series, Q Exactive HF-X, Orbitrap Eclipse, and LTQ XL, using standard ESI or APCI interfaces and native driver support in Tune and Xcalibur software.
Does the system require pulse dampeners for UV detection?
No—its pressure ripple remains below 0.5 bar (peak-to-peak) across all flow rates and pressures, enabling stable UV baselines without external dampening components.
Can the Accela operate at both HPLC and UHPLC pressures within the same method?
Yes—its dual-range pump design allows seamless switching between low-pressure isocratic HPLC methods (e.g., 100 bar) and high-pressure UHPLC gradients (up to 1250 bar) without manual hardware changes or recalibration.
What validation documentation is provided?
Each system ships with Factory Acceptance Test (FAT) reports, IQ/OQ protocols compliant with ASTM E2500-13, and a Certificate of Conformance referencing ISO/IEC 17025 and GAMP 5 classification.
Is remote monitoring supported?
Yes—Chromeleon CDS supports secure HTTPS-based remote access, real-time instrument status dashboards, and email/SNMP alerts for pressure faults, temperature excursions, or sequence completion.