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Related Concept Videos

Principles Of Column Chromatography01:13

Principles Of Column Chromatography

7.0K
The chromatography technique was first invented in 1901 by Michael S. Tswett, a Russian botanist, to separate plant pigments using organic solvents. Further, in 1941, Archer John Porter Martin and R. L. M. Synge modified the technique by packing silica gel into a column. A mixture of amino acids was then separated on the packed column using chloroform and water mixture as the mobile phase. This was the first report on column chromatography. At present, column chromatography is a widely used...
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Types Of Column Chromatography01:29

Types Of Column Chromatography

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The stability and compatibility of column material with samples are crucial for efficient purification in chromatographic techniques. Various operating parameters such as pH, temperature, or solvent affect the packing of the column material, thereby determining the purification efficiency. The choice of column material also plays an essential role in deciding the operating parameters and can be modified based on the proteins that need to be purified.
Gel Filtration Chromatography
When the...
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Silica Gel Column Chromatography: Overview01:10

Silica Gel Column Chromatography: Overview

1.4K
Silica gel column chromatography is a technique for separating compounds using a column packed with silica gel as the stationary phase. This method relies on differences in the polarity of compounds. Based on their polarities, compounds move between the stationary phase (silica gel) and the mobile phase (the solvent), forming discrete bands in the column.
Polar components tend to bind strongly to the silica gel, causing them to move slowly through the column. In contrast, nonpolar compounds...
1.4K
High-Performance Liquid Chromatography: Instrumentation00:57

High-Performance Liquid Chromatography: Instrumentation

2.0K
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.
2.0K
Diffusion on Chromatography Columns01:07

Diffusion on Chromatography Columns

623
In column chromatography, when an analyte is introduced as a narrow band at the top of the column, the solutes begin to separate and broaden, developing a Gaussian profile. This broadening occurs due to various factors, such as longitudinal diffusion.
Longitudinal diffusion occurs when the solute molecules in the mobile phase diffuse from the more concentrated center of the chromatographic band to the more dilute regions on either side, both towards and against the flow direction. This...
623
Optimizing Chromatographic Separations01:15

Optimizing Chromatographic Separations

454
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...
454

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Related Experiment Video

Updated: Aug 15, 2025

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

Published on: May 21, 2021

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Low-cost modular chromatography column rack and vial holders.

Ruby L Schaufler1, Niall C Slowey1

  • 1Texas A&M University, United States.

Hardwarex
|December 29, 2022
PubMed
Summary

Researchers developed an adaptable, inexpensive rack for gravity-driven chromatography columns. This modular design supports various column and vial sizes, simplifying compound separation in labs.

Keywords:
Compound separationFraction collectionGravity-driven column chromatography rackModular and flexibleOpen-source hardwarePurify

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Area of Science:

  • Laboratory equipment design
  • Chromatography techniques
  • Biochemical separation methods

Background:

  • Gravity-driven chromatography is essential for compound separation across scientific, engineering, and medical fields.
  • Current laboratory practices often require custom-fabricated racks for holding chromatography columns, which can be time-consuming and costly.
  • Simultaneous use of multiple columns enhances efficiency and consistency in chromatographic procedures.

Purpose of the Study:

  • To design and present a robust, adaptable, and cost-effective rack for gravity-driven chromatography columns.
  • To provide a modular solution that accommodates various column and collection vial sizes and experimental needs.
  • To offer straightforward fabrication instructions using readily available materials.

Main Methods:

  • Development of a modular column rack design incorporating collection vial holders.
  • Focus on using inexpensive and easily accessible materials for construction.
  • Detailed documentation of the rack's features, materials list, and assembly instructions.

Main Results:

  • A versatile column rack capable of holding diverse column sizes with adjustable height settings.
  • A modular system allowing for expansion to accommodate varying numbers of columns and collection vials.
  • The design utilizes affordable materials and is straightforward to fabricate.

Conclusions:

  • The presented column rack design offers a practical and economical solution for researchers using gravity-driven column chromatography.
  • This adaptable and modular system can improve laboratory workflow and reduce the need for custom equipment fabrication.
  • The design aims to assist investigators in optimizing their compound separation processes.