Minisart® NY25 Syringe Filter 17846———-Q, 0.45 µm Polyamide . Minisart® NY with hydrophilic polyamide (nylon) is optimized for aqueous liquids and solvents with a pH of 3 58045-NDX-CASE | MicroSolv Technology Corp MTC-USA. Syringe Filters, 25mm, Nylon, w/ Multi-Depth Pre Filters, 0.45um Final Pore Size.