Vivaspin are the optimal solution for any concentration or buffer exchange application covering volumes from 100 µl up to 20 ml for fast and safe sample treatment. The patented vertical membrane design and thin channel filtration chamber minimizes membrane fouling and provides high speed concentrations. Membrane options include a high flux polyethersulfone (PES), hydrosart modified regenerated cellulose membrane (HY) for extremely low protein binding and cellulose triacetate (CtA) with high hydrophilicity and very low non specific binding.