Integrated Valve-Tee End Fitting for Low-Dispersion LC Columns
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Solution Overview
Problem
Conventional liquid chromatography systems with post-column tees or valves increase the distance between the column and the detector, leading to increased sample dispersion and peak band spreading.
Innovation Solution
Integrate a tee or valve directly into the outlet end fitting of the liquid chromatography column to reduce the distance to the detector and minimize post-column fluidic volume, thereby reducing sample dispersion.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a connecting tee or valve is positioned along the flow path to provide post-column infusion or diversion, then additional fluidic input and output capabilities are achieved, but the distance between the column and detector increases leading to increased sample dispersion and peak band spreading
Solution Approach 1:
The patent integrates the tee or valve directly into the outlet end fitting of the liquid chromatography column, merging multiple functions (column outlet, flow diversion, and additional input ports) into a single integrated component. This eliminates the need for separate post-column connections and minimizes the distance between the column and detector, thereby reducing sample dispersion while maintaining adaptability for additional fluidic inputs and outputs
2Adaptability or versatility
If a connecting tee or valve is positioned along the flow path, then post-column infusion and diversion functions are enabled, but extra-column fluidic volume increases causing increased sample dispersion
Solution Approach 1:
The tee or valve is merged with the outlet end fitting of the column, creating an integrated assembly that minimizes extra-column volume. The integration ensures that additional fluidic paths are introduced at the column outlet itself rather than requiring separate post-column connections, thereby enabling post-column infusion and diversion functions while minimizing the quantity of extra-column fluidic volume
Solution Approach 2:
The integrated tee or valve provides multiple functions simultaneously: it serves as the column outlet, provides flow diversion capability, and offers additional input ports for post-column infusion. This multi-functionality eliminates the need for separate components and minimizes the overall fluidic volume while maintaining system versatility
Data Source
AI summary
Exemplary embodiments integrate a tee or valve into an outlet end fitting of a liquid chromatography column. The tee or valve is suitable for providing additional fluidic flow paths to ports of the end fitting and eliminates the need for post-column fluidic conduits connecting to tees or valves to insert fluidic inputs or divert flow to outputs. This integration decreases the distance that eluent from the liquid chromatography column has to travel to reach a detector relative to systems that use external tees or valves while providing tee/valve functionality and reducing the fluidic volume post-column. As a result, the exemplary embodiments help decrease sample dispersion.