Millex-FH Filter Syringe Filter Unit, 0.45 µm, hydrophobic PTFE, 50 mm, HB/HB. A 50 mm diameter non-sterile syringe filter with a 0.45 µm pore size hydrophobic PTFE membrane. Comes in a pack of 10. MSDS (material safety data sheet) or SDS, CoA and CoQ, dossiers, brochures and other available documents.