The separation of different major and minor proteins from acid whey with membrane adsorption chromatography at lab scale was investigated. Macroporous membranes with strong anionic or cationic ligands for fast operation (Sartobind Q and S nano) were used in order to bind and subsequently elute the proteins. Food grade buffers were applied for equilibration and elution steps. Desorption was realized by ionic strength gradient with sodium chloride.