Polyethersulfone membranes from Sartorius Stedim Biotech (SSB), Göttingen, Germany, are now integrated into two new, sterile Sartocon benchtop and production-scale filtration assemblies. The assemblies support rapid and safe ultrafiltration of biologics and vaccines. Their fully enclosed design makes the assemblies well suited for safely purifying vaccines and recombinant proteins, as well as for manufacturing monoclonal antibodies. The self-contained filter loop assembly has been developed for use with SSB’s unique control unit, the FlexAct UD. The Sartocon slice self-contained bag loop assembly has been designed for SSB’s benchtop crossflow system, Sartoflow Alpha plus SU. Both assemblies are supplied gamma sterilized and ready to use. For more information, visit SSB.