Prof. Dr. Wieland Schrödl has several years of experience in the purification and conjugation of antibodies from different animal species. In his Vet-spA course on May 3 and 4, 2022, he gave post graduate students of the Faculty of Veterinary Medicine at the University of Leipzig insights into the purification of proteins and antibodies via affinity, ion exchange and size exclusion chromatography. A particular focus of this practical training was trouble shooting and step-by-step optimization. The Research Commission of the Faculty of Veterinary Medicine has launched the structured postgraduate training Vet-spA in 2020. Due to the pandemic, some courses did not take place. Now it is time to fill this important project with life again.