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Preparative HPLC Columns

GL Sciences offers a wide range of Preparative HPLC Columns for purification, scale-up, and robust performance across applications.

Preparative HPLC Columns
 
 

Available across InertSustain and Inertsil series, preparative HPLC columns come in a broad range of sizes to meet the demands of preparative chromatography. Choose from C18, HILIC, C8/C4, SEC, and Normal Phase chemistries, all designed to support reliable purification and smooth scale-up workflows.

 
 
 
 

How to Select a Preparative Column

 
 

Relationship Among Column I.D. , Sample Loading Volume and Flow Rate

Columns with internal diameters ranging from 6.0 to 100 mm are widely used in preparative operations. When the analytical conditions, column packing materials, and column lengths of the analytical and preparative run are identical, nearly identical chromatograms can be achieved by simply adjusting the flow rate and sample loading volume in proportion to the column cross-sectional area.

The following table provides the appropriate flow rate for a column with a given internal diameter.

Diagram illustrating relationship between HPLC column internal diameter and flow rate, comparing 4.6 mm and 20 mm I.D. columns.
Table showing appropriate flow rates for preparative HPLC columns by internal diameter, scale-up factor, and phase type.
 

Smooth and Easy Scale-Up from Analytical to Preparative Dimensions

Investigation of purification conditions using preparative HPLC columns is costly due to the large amount of sample required and solvent used. Therefore, it is common to initially study the purification conditions using an analytical column before scale -up to a preparative HPLC column. However, sufficient separation may not be obtained unless the preparative column with a performance that is equivalent the analytical HPLC column is used. As shown below, Inertsil ODS-3 provides good peak symmetry with a symmetry coefficient (Asy) that is close to 1 even in large-diameter columns. The theoretical number of plates (N) remained at ~ 20,000 for a 250 mm length column. This allows smooth scale-up from an inner diameter of 4.6 to 50 mm.

Chromatograms showing smooth scale-up from analytical to preparative HPLC columns using Inertsil ODS-3, with consistent peak symmetry across 4.6 mm to 50 mm I.D.