Quality assurance will be instrumental to the economic survival of companies in the Single European Market. Test laboratories will have to prove and demonstrate their qualifications. As DSC’s services are frequently enlisted for quality assurance tasks in the industrial production process, the requirements of the relevant quality assurance standards must also be applicable to DSC. The European Standard EN 45001 defines general criteria for the operation of test laboratories. For example, a calibration program for instruments must be available. For the temperature calibration of DSCs a recommendation prepared by the German Society for Thermal Analysis (GEFTA) is available and will be presented. Recommendations for caloric calibration are also mentioned.