Besides instruction and control of the processing quality assured mixing requires the instruction and tracing of the used materials for batches as well as for final products. Today's computer- and software systems developed for the control of batch processes fulfill these requirements completely. The production process is fully documented by the measured process and test values. Additionally the registration and recording of all material movements within the entire production area has to be recordable in two ways: Every component used in the product can be traced from coming in up to the final product. On the other hand given the final product you can trace back each used component.