The TSKgel SW mAb products consist of three specialized columns designed for the analysis of monoclonal antibodies (mAbs). Compared to competitive columns, these stainless steel, silica-based TSKgel columns offer reduced lot-to-lot variation, long column life, reduction of unspecified adsorption, and superior recovery of aggregates.
TSKgel SW, SWXL and SuperSW columns are silica-based columns optimized for the separation of proteins and nucleic acids using an aqueous buffer as the mobile phase. A hydrophilic diol-type bonded phase shields the silica surface from interacting with protein samples. Compared to competitive HPLC columns, TSKgel SW-type columns contain more pore volume per unit column volume, which results in higher molar mass (MM) selectivity or better resolution. The columns within the TSKgel SW-type group differ in pore size, offering the ability to separate a wide range of compounds of varying molar mass.
TSKgel BioAssist DS columns are designed for the desalting and buffer exchange of proteins and polynucleotides at semi-preparative scale.
TSKgel Column Type
Particle Size (µm)
| SW mAb || 3, 4 || High resolution/high throughput analysis of monoclonal antibody monomer, fragments, and higher order mAb aggregates |
| SW || 10, 13, 17 || High sample capacity; semi-prep dimensions available; 60 cm L available for higher resolution |
| SWXL || 5, 8 || Most popular and most versatile; 15 cm L available for high speed; available in PEEK housing for biomolecules and ionic compounds |
| SuperSW |
| 4 || 4.6 mm ID for increased sensitivity and efficiency in sample-limited cases, reduced solvent consumption |
| BioAssist DS || 15 || Quick and efficient removal of salts, detergents and denaturants from sample formulation |
The TSKgel PW columns contain particles of 12 and 17 µm and deliver high resolution separations. TSKgel PWXL columns are of smaller particle size than the TSKgel PW columns, offering higher efficiency for optimal resolution.
The main application areas for TSKgel PW and PWXL columns are the analysis of celluloses, acrylamides, glycols, dextrans, polyvinylalcohol, and oligosaccharides. Both the TSKgel PW and PWXL column lines include a mixed bed column, prepared by mixing particles of different pore sizes, which results in columns with an extended linear calibration curve. These columns are useful as scouting columns, to quickly categorize the molar mass (MM) profile of an unknown sample. Additionally, mixed bed TSKgel PW and PWXL columns are highly useful in the characterization of samples having a very broad MM distribution.
Three specialty columns are available within the TSKgel PWXL column line. TSKgel G-DNA-PW is designed for the separation of large polynucleotides, such as DNA and RNA fragments of 500-5,000 base pairs. TSKgel G-Oligo-PW is the preferred column for the analysis of oligosaccharides. TSKgel SuperOligoPW contains smaller particles and semi-micro dimensions compared to the TSKgel G-Oligo-PW column, enabling high speed separations with high resolution of aqueous oligomers.
TSKgel PWXL-CP columns were specifically designed for the analysis of water-soluble cationic polymers. Cationic groups are introduced on the surface of the TSKgel PWXL-CP packing material to prevent undesirable interaction of cationic polymers and allow elution under low salt conditions.
TSKgel SuperMultipore PW columns are packed with particles containing a wide range of pore sizes. The unique multi-pore technology creates a linear calibration curve within each particle, resulting in better accuracy for molar mass determination.
TSKgel Column Type
Particle Size (µm)
| PW || 12, 17 || Larger particle sizes for analyses when time is not critical or sample mass is not limited; mixed bed column available for scouting purposes |
| PWXL || 3, 7, 10, 13 || High efficiency for optimal resolution, reduced analysis time due to smaller particle sizes; mixed bed and specialty columns available |
| PWXL-CP || 7, 10, 13 || Improved recovery and separation of cationic polymers |
| SuperMultiporePW || 4, 5, 8 || Unique multi-pore particles for improved linearity; three columns available, allows wide separation range from high MM polymers to oligomers |