Hydrophilic PTFE Syringe Filters, Advantec, 0.45 Micron, 13 mm, 1. Highly hydrophobic; Excellent chemical compatibility; Very low extractables; Superior flow performance compared to other hydrophobic membranes. Applications:. Nylon Syringe Filters, Advantec, Sterile, 0.20 Micron, 25mm, 100/Pk