In the project experts have developed sub-criteria and indicators for the internationally agreed five sustainability criteria for Chemical Leasing. From this, both an indicator checklist and the electronic instrument SMART 5 were developed. The checklist allows a qualitative assessment. With SMART 5, users can capture quantitative values and generate an overall view of their Chemical Leasing application. Both tools have been tested by professionals in case studies from various industries. The improvements achieved were then examined with regard to their potential for various industrial sectors.