Centrifugal ultrafiltration devices for the concentration and clarification of biological samples, protein purification, particle removal, plasma or serum filtration and removal of cells or cell debris from cell lysates or cell supernatants. Sartorius Stedim Biotech offers twelve alternative centrifugal devices covering volumes from 100 µl up to 100 ml for fast and safe samples. Choose between disposable and reusable centrifugal ultrafiltration devices.