Assessing Pseudo-hermeticity on COST with Plastic Encapsulated Materials Financial source: European Space Agency ESA (contract No. 4000135494/21/NL/GLC/ov) Consortium: Institute of Materials Science of Seville, ALTER TECHNOLOGY TÜV NORD (SP), ALTER TECHNOOGY TÜV NORD (UK) PIs (NToSP): Ángel Barranco  (project manager),