Protein activity and functional studies rely largely on the availability of purified proteins. BioVision's Multipurpose Mini Spin Columns offer a convenient option to purify target proteins by multiple small scale laboratory techniques. Along with affinity purification and recombinant protein purification, these columns can also be used for techniques like immunoprecipitation, desalting etc. These spin columns are constructed of polypropylene with a polyethylene FRIT. They have a porosity of 20 μm and a total bed volume of 700 μl. Each of these columns can be packed with a variety of media/beads for centrifugation-based separation of biomolecules. The columns are equipped with tight top screw caps and a bottom plugs making them