Column Selector—Choose the Closest Alternative to a Given Chromatographic Column
The Column Selector application from ACD/Labs helps chromatographers select suitable alternatives to a desired chromatographic column, closely matched for retention and selectivity, based on the Tanaka chromatographic parameters.
Simply select your desired column and see a list of ranked results below. Compare two columns with one another, or compare one column to the full list of available columns.
Column Selector Web Tool
Compare a column to the full list of available columns using the below form. You can also compare just two columns (optional).
To increase the number of similar columns, set the weight for hydrophobic retention to zero (kPB = 0). The proportion of organic modifier in the mobile phase must be adjusted to compensate for differences in retention between the original and the new column. If the chromatography is being performed at low pH it may be appropriate to set the αB/P at pH 7.6 parameter to zero in order to deselect this term.
Columns that possess low chromatographic discrimination factors to the original column (i.e. CDF <1) will possess similar chromatographic properties. Whereas, in the method development arena, columns with large CDF values (>1) will possess large differences in selectivity (and/or retention) to the original column.
Tanaka chromatographic parameter descriptions
kPB reflects the hydrophobic retention and surface area of the column αCH2 reflects the hydrophobicity of the column αT/O reflects steric selectivity (a column with a high value is different from one with a low value however it is not possible to state which will give the largest selectivity between two analytes) αC/P reflects the H-bonding capacity of a column αB/P at pH 7.6 reflects the total number of free silanol groups on the column αB/P at pH 2.7 reflects the number of acidic silanol groups on the column
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M.R. Euerby, A.P. McKeown and P. Petersson. (2003). Chromatographic classification and comparison of commercially available perfluorinated stationary phases for reversed-phase liquid chromatography using principal component analysis. J. Sep. Sci., 26, 295-306.
P. Petersson, M.R. Euerby. (2005). An evaluation of the robustness of the Tanaka characterization protocol for reversed-phase liquid chromatography columns. J. Sep. Sci., 28, 2120-2129.
M.R. Euerby, P. Petersson. (2005). Chromatographic classification and comparison of commercially available reversed-phase liquid chromatographic columns containing polar embedded groups/amino endcappings using principal component analysis. J. Chromatogr. A, 1088, 1-15.
P. Petersson, M.R. Euerby. (2007). Characterisation of RPLC columns packed with porous sub-2 Ám particles. J. Sep. Sci., 30, 2012-2024.
M.R. Euerby, P. Petersson, W. Campbell, W. Roe. (2007). Chromatographic classification and comparison of commercially available reversed-phase liquid chromatographic columns containing phenyl moieties using principal component analysis. J. Chromatogr. A, 1154, 138-151.
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M.R. Euerby, M. James, P. Petersson. (2012). Practical Implications of the "Tanaka" Stationary Phase Characterization Methodology using Ultra High Performance Chromatographic Conditions. J. Chromatogr. A, 1228, 165-174.