UFZ Tower (IMAGE) Helmholtz Association Caption The today's UFZ guest house had been used as 40m column tower for stable isotope separation from 1959-1990. Credit Norma Neuheiser/UFZ Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.