is established for polishing applications (removal of DNA and host cell proteins) and the virus removal in the production process of antibodies (see biopharmaceuticals). First applications also arise at the step of virus removal in vaccine production. In the membrane chromatography, thin, synthetic and porous membranes are used that are integrated into a cassette 31. Examples for single-use membrane chromatography columns are the Sartobind Membrane Adsorber produced by Sartorius Stedim Biotech or the Mustang Q Membrane Adsorber produced by Pall Life Sciences. See chromatography.