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 100PCS PTFE Syringe Filter, 0.45μm, 13mm, Hydrophobic, w – eBay. 100PCS PTFE Syringe Filter 0.45μm 13mm Hydrophobic Lab Filtration Luer-Slip HPLC. Simpure PTFE Syringe filters are purpose-built