TSKgel BioAssist G2SWxl is the PEEK format of the TSKgel G2000SWxl column. These columns are an excellent choice for small proteins and peptide separations. The fractionation range is applicable for globular protein samples up to 150,000 Da. These columns feature high pore volume per unit column volume, low sample adsorption and excellent column efficiency, all contributing to unsurpassed sample resolution.