Full Description ADOPTED_FROM:CEN ISO/TR 15462:2009 ISO/TR 15462:2006 gives an overview of biodegradation tests for the aquatic environment standardized by ISO and provides recommendations on their use. The biodegradation tests listed are designed to determine the biodegradability of chemical substances or wastewaters under standardized conditions. Inhibitory tests with bacteria and mixed bacterial inocula are included because a possible toxicity on the inoculum is important information for the choice and performance of biodegradation tests.