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Related Concept Videos

High-Performance Liquid Chromatography: Instrumentation00:57

High-Performance Liquid Chromatography: Instrumentation

High-performance liquid chromatography, or HPLC, is an analytical technique that separates liquid samples under high pressures. An HPLC instrument consists of glass bottles for storing solvents called mobile phase reservoirs. HPLC-grade solvents are used to maintain high purity, and the dissolved gases are removed using a degasser, such as a vacuum pumping system or sparging with helium. The solvents are then pumped into the analytical column using a screw-driven syringe or reciprocating pumps.
High-Performance Liquid Chromatography: Introduction01:11

High-Performance Liquid Chromatography: Introduction

High-performance liquid chromatography(HPLC), formerly referred to as High-pressure liquid chromatography, is a powerful technique used to separate, identify, and quantify components in complex mixtures. The term "high pressure" refers to using high pressure to push the liquid mobile phase through the tightly packed columns.
In HPLC, two phases play a critical role in the separation process:
High-Performance Liquid Chromatography: Elution Process01:05

High-Performance Liquid Chromatography: Elution Process

In High-Performance Liquid Chromatography (HPLC), the elution process is critical to the separation of analytes and the quality of chromatographic results. Elution describes how compounds move through the column and separate based on their interactions with the mobile and stationary phases. This process determines the resolution, peak shape, and retention times in the chromatogram, which are essential for identifying and quantifying components in complex mixtures. Understanding the elution...
High-Performance Liquid Chromatography: Types of Detectors01:15

High-Performance Liquid Chromatography: Types of Detectors

The role of the detectors in High-Performance Liquid Chromatography (HPLC) is to analyze the solutes as they exit from the chromatographic column. The detector recognizes the solute's property and generates corresponding electrical signals, which are converted into a readable graph of the detector's response versus elution time called a chromatogram at the computer. There are several types of HPLC detectors, each with its own advantages and limitations, depending on the analyte properties and...
Ion-Exchange Chromatography01:09

Ion-Exchange Chromatography

Ion-exchange chromatography, or IEC, is a technique for separating ions based on their affinity for the stationary phase. The stationary phase is a cross-linked polymer resin with covalently attached ionic functional groups. The functional groups can be either positively charged (cation exchangers) or negatively charged (anion exchangers). A cation exchanger consists of a polymeric anion and active cations, while an anion exchanger is a polymeric cation with active anions. The choice of...
Size-Exclusion Chromatography01:08

Size-Exclusion Chromatography

In size-exclusion chromatography (SEC), also known as molecular-exclusion or gel-permeation chromatography, molecules are separated based on their sizes. This technique is important for separating large molecules such as polymers and biomolecules. The two classes of micron-sized stationary phases encountered in SEC are silica particles and cross-linked polymer resin beads. Both materials are porous, but their pore sizes vary significantly.
Silica particles offer advantages such as rigidity,...

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Related Experiment Video

Updated: Jun 19, 2026

Automated HPLC Separation Using LC-Mate: An Integrated Repetitive Autosampler and Fraction Collector for Microscale Purification
07:11

Automated HPLC Separation Using LC-Mate: An Integrated Repetitive Autosampler and Fraction Collector for Microscale Purification

Published on: February 27, 2026

HPLC cassettes--a new modular separation system with high flexibility.

E Oelrich1, H Preusch, E Wilhelm

  • 1E. Merck, Department for Pharmaceutical Analysis and Quality Control, D-6100 Darmstadt, Germany.

Journal of Chromatographic Science
|October 24, 2009
PubMed
Summary

A novel High-Performance Liquid Chromatography (HPLC) system utilizes a cassette-based column with a unique needle seal connection. This design simplifies operation and enhances flexibility for various analytical tasks.

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An Economical and Versatile High-Throughput Protein Purification System Using a Multi-Column Plate Adapter
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An Economical and Versatile High-Throughput Protein Purification System Using a Multi-Column Plate Adapter

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Last Updated: Jun 19, 2026

Automated HPLC Separation Using LC-Mate: An Integrated Repetitive Autosampler and Fraction Collector for Microscale Purification
07:11

Automated HPLC Separation Using LC-Mate: An Integrated Repetitive Autosampler and Fraction Collector for Microscale Purification

Published on: February 27, 2026

An Economical and Versatile High-Throughput Protein Purification System Using a Multi-Column Plate Adapter
10:08

An Economical and Versatile High-Throughput Protein Purification System Using a Multi-Column Plate Adapter

Published on: May 21, 2021

Area of Science:

  • Analytical Chemistry
  • Chromatography Science

Background:

  • Traditional High-Performance Liquid Chromatography (HPLC) systems often face challenges with column connection and operational flexibility.
  • Limitations in existing HPLC setups can hinder rapid analysis and advanced applications like post-column derivatization.

Purpose of the Study:

  • To introduce a new HPLC system designed for improved usability and enhanced analytical capabilities.
  • To present a novel cassette-based column system with a problem-free connection technique.

Main Methods:

  • Development of an HPLC system incorporating a cassette-style column.
  • Implementation of a novel needle seal column connection technique.
  • Redesign of column inlet/outlet to a system of four combined inlets/outlets.

Main Results:

  • The new system offers simplified operation, including tool-free, rapid column exchange.
  • Enhanced performance is achieved with no loss of separating power in ancillary equipment.
  • High flexibility is demonstrated through convenient column backflush, improved sample splitting, simple eluate splitting, elegant post-column derivatization, and easy column switching.

Conclusions:

  • The described HPLC system provides significant advantages in terms of ease of use and operational versatility.
  • The innovative design addresses limitations of conventional HPLC systems, paving the way for more efficient and flexible chromatographic analyses.