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Related Concept Videos

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: 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: 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...
Optimizing Chromatographic Separations01:15

Optimizing Chromatographic Separations

Optimizing chromatographic separations is crucial for obtaining clean separations in a minimum amount of time. Optimization is required for several factors, including kinetic effects related to band broadening, plate height, capacity factor, and separation factor.
Band broadening refers to spreading solute bands as they travel through the column. This broadening can impact resolution. Plate height (H) represents the length required for one theoretical plate. A lower plate height corresponds to...
Column Efficiency: Plate Theory01:10

Column Efficiency: Plate Theory

Band broadening in a chromatography column is measured by its efficiency. This is determined by the number of theoretical plates (N). Theoretical plate theory states that a separation column consists of a continuous series of imaginary plates where solute equilibration occurs between stationary and mobile phases.
A higher number of theoretical plates signifies better column efficiency and improved separation capabilities. Plate height affects bandwidth and separation quality; it is inversely...

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Automated Hydrophobic Interaction Chromatography Column Selection for Use in Protein Purification
10:21

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Published on: September 21, 2011

Efficient and economic HPLC performance qualification.

Lukas Kaminski1, Matthias Degenhardt, Joachim Ermer

  • 1Institute of Pharmaceutical Chemistry, Technical University Braunschweig, Beethovenstrasse 55, D-38106 Braunschweig, Germany.

Journal of Pharmaceutical and Biomedical Analysis
|October 6, 2009
PubMed
Summary

Analytical instrument qualification (AIQ) can be improved by using continuous performance qualification (PQ) based on system suitability tests (SST). This approach reduces time and effort in pharmaceutical analysis without compromising data quality.

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Area of Science:

  • Pharmaceutical Analysis
  • Analytical Chemistry
  • Laboratory Quality Management

Background:

  • Analytical instrument qualification (AIQ) is crucial for data integrity in pharmaceutical analysis.
  • Traditional Performance Qualification (PQ) is time-consuming, expensive, and provides only a performance snapshot.
  • High-Performance Liquid Chromatography (HPLC) systems require qualification, including Installation Qualification (IQ), Operational Qualification (OQ), and PQ.

Purpose of the Study:

  • To demonstrate that continuous PQ can be effectively derived from system suitability tests (SST) and daily performance data.
  • To propose a more robust and efficient AIQ strategy for HPLC systems.
  • To reduce the burden of routine PQ exercises in pharmaceutical laboratories.

Main Methods:

  • Compiled a list of twelve critical parameters for instrument qualification.
  • Evaluated system suitability test (SST) data and Operational Qualification/Performance Qualification (OQ/PQ) data from various sources.
  • Assessed the feasibility of using SST data for continuous PQ.

Main Results:

  • Satisfactory instrument performance assessment can be achieved using SST and daily use performance data.
  • Identified and incorporated critical parameters into a holistic qualification approach.
  • Promising results confirmed the concept of ongoing/continuous PQ as a significant improvement in AIQ.

Conclusions:

  • Continuous PQ, utilizing SST data, offers a major improvement in AIQ for HPLC systems.
  • This approach reduces laboratory routine time and effort while maintaining data quality.
  • Avoids the need for re-evaluation of numerous analytical tests when routine PQ fails.