Forward–Backward-Flushing Valve-Assisted Selectivity Tuning (FBF-VAST) for LC × LC: Principles and Demonstration of a Modulation Mechanism

Key Points

• To demonstrate a novel modulation mechanism for enhanced chromatographic selectivity in LC × LC systems.
• Utilization of Forward–Backward-Flushing Valve-Assisted Selectivity Tuning
• Demonstration of the modulation mechanism in a laboratory setting
• Evaluation of D-column cleaning process
• Improved robustness and column life through effective cleaning
• Enhanced control over chromatographic selectivity
• Demonstration of long-term stability in chromatographic performance