Exchanging samples in the Materials Science Lab

ESA astronaut Matthias Maurer exchanges samples for a DLR experiment in the European Materials Science Lab. He posted this to his social channels on 20 January 2022 with the caption:

"Exchanging metallic samples in the Materials Science Lab (MSL) for a Deutsches Zentrum für Luft- und Raumfahrt (DLR) experiment. This oven lets us melt selected alloys under defined conditions in zero gravity. These kinds of experiments build our knowledge and help improve technology used in industrial casting processes on Earth for new, lighter versions of complex parts."