Tosoh, 0021464, TSKgel BioAssist DS

TSKgel BioAssist DS columns are designed for the desalting and buffer exchange of proteins and polynucleotides at semi-preparative scale. Packed with 15 μ m polyacrylamide beads in PEEK hardware, TSKgel BioAssist DS columns show excellent desalting performance. These columns can be operated in standard HPLC systems to quickly and efficiently reduce salt and/or buffer concentrations of collected protein or nucleic acid fractions. The novel* hydrophilic highly cross-linked polyacrylamide beads exhibit superior mechanical strength compared with conventional hydrophilic polyacrylamide beads and cross-linked dextran beads. This increase in strength is what allows the use of the small spherical 15 μ m beads. *US patent number 7,659,348