Click HERE for Frequently Asked Questions (FAQ) about TYPE-C columns.


Click HERE for Application Notes.


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We are always ready to lend any support we can. Our experienced scientists and professionals are ready to assist you with any technical support questions. Every question is considered a good question and we will work with you on a solution as fast as possible.

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  • Fax to us: 1-910-769-9435

  • Email Technical Support


Liquid crystal | Shape recognition | "Steroids" column | TYPE-C™ silica.

These columns have an eleven carbon (C11), aliphatic linker to a terminal cholesterol group bonded with a direct silicon-carbon bond to the silica hydride surface. It is one of our most unique HPLC columns.

The many advanced features of the Cogent UDC - Cholesterol ™ stationary phase produces a very stable and efficient HPLC column that operates in reversed phase (RP), normal phase (NP) and/or aqueous normal phase (ANP) and will solve many difficult separation problems for you.

This phase is more sensitive to temperature and solvent composition than most phases due to the liquid crystal nature of the cholesterol moiety. These parameters are used in shape recognition and can make for very unique selectivity on this very stable and robust column. It is often used to separate steroids from each other.

  • Click HERE to view specifications.

  • Click HERE for more information About TYPE-C columns.

  • Click HERE for "How to use" UDC - Cholesterol columns.

NOTE: Our technical support team strongly recommends that the Cogent column filter, included with each column, be used with all HPLC columns whenever possible. Click HERE for details.

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Product Ordering Information
This item is on Clearance and is priced to sell quickly. Clearance items are not returnable. Additional items might be available as a Custom Order, please contact Customer Service for details.

Guard Column Cartridge, UDC Cholesterol, Replacement Cartridge, 2.0mm ID x 10mm Length, 4um, 100A. In an individual black case. Cogent TYPE-C Brand. 1 EA.

Limited Quantities Available. Discontinued when sold.

This item is on Clearance and is priced to sell quickly. Clearance items are not returnable. Additional items might be available as a Custom Order, please contact Customer Service for details.

Guard Column Cartridge, UDC Cholesterol, Replacement Cartridge, 4.0mm ID x 10mm Length, 4um, 100A. In an individual black case. Cogent TYPE-C Brand. 1 EA.

Limited Quantities Available. Discontinued when sold.

This item is on Clearance and is priced to sell quickly. Clearance items are not returnable. Additional items might be available as a Custom Order, please contact Customer Service for details.

Guard Column Cartridge, UDC Cholesterol, Replacement Cartridge, 1.0mm ID x 10mm Length, 4um, 100A. Hichrom style, in an individual black case. Cogent TYPE-C Brand. 1 EA.

Limited Quantities Available. Discontinued when sold.

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