Producing cost-effective, protein-rich and sustainable sources for the food and feed industries is one of the challenges of the new millennium, especially given the world's ever-growing population. The object of the invention presented here is to ensure the assignability and traceability of material flow during the emptying of containers. This object is achieved with the apparatus according to the invention in that it has a measuring device, by means of which data about the at least one container to be emptied and/or the container contents can be collected prior to, during and/or after the emptying process.