Falcon T25 Tissue Culture Flask used in cell culture. Cells are plated onto the bottom layer, where liquid media is pipetted on top of the cells to feed them. The media is then aspirated and replaced as needed.
I figured I work with them all day, I might as well try to model it.
All textures are from https://3dtextures.me/ (I think I just used the brushed metal in this one).