Oct 11, 2021 · Millex-GP Syringe Filter Unit, 0.22 µm, polyethersulfone, 33 mm, gamma sterilized A 33 mm diameter sterile syringe filter with a 0.22 µm pore size hydrophilic Polyethersulfone (PES) membrane. Comes in a pack of 50. - Find MSDS or SDS, a COA, data sheets and more information.