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Updated: Jun 10, 2026
13:36
Simple In-House Ultra-High Performance Capillary Column Manufacturing with the FlashPack Approach
Published on: December 4, 2021
Capillary liquid chromatography at ultrahigh pressures.
1Department of Chemistry, University of North Carolina at Chapel Hill, 27599-3290, USA. jj@unc.edu
Summary
Ultrahigh-pressure liquid chromatography (UHPLC) offers superior separation power and faster run times using sub-2-micrometer particles. This advanced technique requires high pressures but yields significantly improved chromatographic results.
Area of Science:
- Analytical Chemistry
- Chromatography
Background:
- Ultrahigh-pressure liquid chromatography (UHPLC) employs sub-2-micrometer particles in long capillary columns.
- This packing necessitates high operating pressures, ranging from 1,000 to 7,000 bar.
Purpose of the Study:
- To review the fundamental principles and theoretical underpinnings of UHPLC.
- To examine the practical hardware considerations for UHPLC systems.
- To explore current applications, future research directions, and related chromatographic techniques.
Main Methods:
- Utilizes sub-2-micrometer particles packed into capillary columns (25-100 cm).
- Operates at high pressures (1,000-7,000 bar).
Main Results:
- Achieves high separation efficiencies with theoretical plate counts from 100,000 to 300,000.
- Enables rapid analysis with run times from minutes to hours.
- Demonstrates versatility across various separation challenges.
Conclusions:
- UHPLC provides significant advantages in separation power and speed over conventional methods.
- The review covers theoretical, practical, and application-based aspects of UHPLC.
- It also contextualizes UHPLC within the landscape of complementary and competitive techniques.
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