Feb 22, 2022 · Sartorius Minisart™ SRP Syringe Filters are single-use filtration units with a chemically resistant PTFE membrane and male luer slip outlet. Available in 4, 15 and 25mm diameter filters with 0.2 or 0.45 μm pores. Simple, rapid and reliable ultracleaning. Feature a coating-free, hydrophobic PTFE membrane that is chemically inert. Chat Now