Does anyone know of any (widely/commercially available) plastics that exhibit 'fully'-permeable properties? That is the plastic would allow small molecules to move freely in and out (water, carbon dioxide, oxygen, nitrate etc.), but prevent viruses, bacteria etc. from entering? I believe it would need to have mesoporous/nanoporous properties. Can't find anything online! Perhaps what I'm looking for doesn't exist.
Basically i'm going through preliminary research for my MSc thesis that i'll be undertaking in summer. I'm looking for a material that could contain a marine microalgae culture wh