This Cogent Bidentate C8™ HPLC Column is made with Cogent TYPE-C™ Silica , and an aliphatic hydrocarbon chain with 8 carbon atoms. This silica hydride based stationary phase provides excellent Selectivity, Faster Equilibration and Extremely Robust Column Lifetimes.
This is not a typical C8 column and it can produce unique selectivity and retain compounds that normally do not retain on other C8 columns made with standard silica. The hydrophobic 4um, particle and two points of attachment with direct silicon-carbon bonds, makes this column more hydrophobic than other C8 columns and less hydrophobic than the Bidentate C18, yet it can retain some hydrophilic compounds as well if desired. This column can also be used at very low pH (below 2) with no damage to the column, among many other unique benefits.
Chosen when more separation between closely related compounds or longer retention times is needed.
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