Agilent InfinityLab 2D-LC Solutions

Importance of the Topic

Two-dimensional liquid chromatography (2D-LC) addresses the critical need for enhanced separation performance when one-dimensional methods fail to resolve co-eluting or structurally similar analytes. By delivering ultrahigh peak capacity, 2D-LC improves confidence in qualitative and quantitative analyses across diverse fields including pharmaceuticals, biopharmaceuticals, chemical industries, food safety, environmental monitoring, and forensic toxicology.

Objectives and Overview

This document introduces the Agilent InfinityLab 2D-LC Solutions, designed to integrate two orthogonal chromatographic dimensions into a single, automated workflow. It outlines system capabilities, software tools, valve technologies, and applications to demonstrate how 2D-LC can simplify complex separations, enhance resolution, and maintain robustness in regulated and research environments.

Methodology and Applied Instrumentation

Agilent’s 2D-LC approach combines:

• Heart-cutting and multiple heart-cutting modes for targeted peak transfers.
• Comprehensive LC×LC for full-spectrum separation of all analytes.
• Active Solvent Modulation (ASM) to equalize solvent effects between dimensions.

Key components:

• InfinityLab 2D-LC System with pressures up to 1,300 bar.
• Biocompatible Bio 2D-LC modules for sensitive biomolecule analysis.
• ASM and multiple heart-cutting valves to maximize reproducibility and peak capacity.
• Software: OpenLab CDS for UV and single quadrupole control; MassHunter for Q-TOF and triple quadrupole workflows.

Main Results and Discussion

Performance highlights include:

• Consistent recognition as the top-performing 2D-LC platform in user surveys since 2016.
• Rapid mAb titer and aggregation assays via the ProtA-SEC kit with fully automated desalting.
• Simultaneous enantiomeric and impurity profiling of small-molecule APIs at regulatory levels (0.25% area RSD).
• Ion suppression reduction in cannabinoid analysis by targeted heart-cutting combined with triple quadrupole MS.
• Comprehensive fingerprinting in beverages and complex matrices to distinguish product types.

Integrating 2D-LC with MS detectors enhances selectivity and sensitivity, facilitating isomer discrimination, high-salt buffer compatibility through in-line desalting, and compliance with 21 CFR Part 11 in QA/QC settings.

Benefits and Practical Applications

Agilent InfinityLab 2D-LC Solutions enable laboratories to:

• Resolve thousands of compounds in a single analysis.
• Eliminate manual offline steps such as sample prep and desalting.
• Achieve robust, reproducible workflows suitable for regulated environments.
• Scale instrument configurations over time to meet evolving analytical needs.

Future Trends and Potential Applications

Emerging directions include:

• Further automation of peak-based dynamic parking and gradient shifting for real-time method optimization.
• Deeper integration with high-resolution and high-throughput MS for proteomics and lipidomics.
• Application of AI-driven data analysis to streamline method development and spectral interpretation.
• Expansion into single-cell and microfluidic separations leveraging miniaturized 2D-LC architectures.

Conclusion

Agilent’s InfinityLab 2D-LC Solutions set a new benchmark for chromatographic separation power, offering flexible system modules, innovative valve technologies, and comprehensive software support. These platforms advance analytical capabilities across industries, delivering unparalleled resolution, workflow simplicity, and regulatory compliance.