CELLsius GmbH is part of a manufacturing company and responsible for the proper storage of drugs in the form of reference samples and retention samples. Enzymes are stored at -70°C, vaccines at 5°C and finished drugs in the form of tablet blisters at room temperature (15-25°C). Due to the lack of space, reasoned by rising numbers of samples, SampleDepot GmbH stores samples in the future partially in their premises. For this reason, an appropriate Quality Agreement was formulated. This document defines the roles and responsibilities of the client and contractor, which are necessary for an external storage of reference and retention samples. Also, the transport of samples between two storage locations is covered in the content. The aim is to further ensure the quality of the reference and retention samples. To guarantee compliance with the contents of the Quality Agreement, a plan for auditing the external partner company was created. According to this, audits are conducted frequently.