Payloads Materials Science Research Rack-1 (MSRR-1): The crew installed the protective cover, closed the MSRR left faceplate and stowed the MSRR/MSL hardware. The MSRR-1 is used for basic materials research in the microgravity environment of the ISS. MSRR-1 can accommodate and support diverse Experiment Modules (EMs). Many material types, such as metals, alloys, polymers, semiconductors, …
Click here for original story, ISS Daily Summary Report – 3/23/2021
Source: ISS Report