The separation of cannabinoids is an important process which is necessary for clinical studies. The aim of these studies is to investigate the effect of the isolated cannabinoids on patients suffering from chronic illnesses and side effects caused by chemotherapy. The relaxation of laws concerning medical use of cannabis all around the world, especially the United States, has increased the interest in determining the effect of cannabinoids on the human body. Clinical studies require large amount of highly pure separated cannabnnoids. This can easily be achieved with the PrepChrom C-700.