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A high-throughput three-capillary noise-cancelling viscometer for chromatographic systems.
Wallace W Yau1, Rongjuan Cong, David Gillespie
1The Dow Chemical Company, Freeport, TX 77541, USA. wyau@dow.com
Analytical and Bioanalytical Chemistry
|September 25, 2010
Summary
A novel three-capillary viscometer detector eliminates hold-up volume for increased chromatography sample throughput. This robust design improves efficiency by reducing run times and simplifying maintenance.
Area of Science:
- Analytical Chemistry
- Chromatography Instrumentation
Background:
- Traditional viscometer detectors in chromatography suffer from "hold-up" volume.
- Pump noise and baseline drift are inherent challenges in chromatographic systems.
Purpose of the Study:
- To introduce a novel three-capillary viscometer detector.
- To eliminate traditional viscometer hold-up volume while maintaining noise and drift cancellation.
- To enhance sample throughput in chromatography.
Main Methods:
- Development of an analytical three-capillary viscometer detector.
- Implementation of a design that cancels short-term pump noise and long-term baseline drift.
- Utilizing a staggered sample injection approach.
Main Results:
- Elimination of traditional viscometer "hold-up" volume.
- Significant increase in sample throughput due to reduced chromatographic run time.
- A more robust detector design requiring less maintenance.
Conclusions:
- The three-capillary viscometer detector offers a significant advancement in chromatographic analysis.
- The design enables higher sample throughput and improved system robustness.
- This innovation simplifies operation and maintenance of viscometer detectors.
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