TSKgel SW Columns for Protein Analysis
TSKgel SW columns, introduced in 1977, were the first of a long line of high performance Gel Filtration columns that have become synonymous with analyzing protein molecular weights in the emerging field of biotechnology.
TSKgel SW-type columns are based on highly porous silica particles, the surface of which has been shielded from interacting with proteins by derivatization with ligands containing diol functional groups. TSKgel SW-type columns stand out from other silica- or polymer-based high performance size exclusion columns by virtue of their large pore volumes.
The calibration curves are shown for globular proteins, polyethylene oxides and dextrans for each of the three TSKgel SW-type columns. The table summarizes the molecular weight ranges for TSKgel G2000SW, G3000SW and G4000SW columns for globular proteins, polyethylene oxides and dextrans that can, at least partially, access the particle pores. For comparative purposes, similar data is provided as well for TSKgel SWXL and SuperSW-type columns.