25mm HPLC Syringe Filter, PTFE, natural 0.45μm 100 pcs. per-Bag add.packed in a blue PP-Box Hydrophobic (water repellent) Sample Retention <0.1 ml Pressure Rating: 87psi Effective Filter Area: 4.08 cm² With Luer Lock-Inlet (female) and Luer Slip (male) chemically high resistant for organic solutions, agressive acids and bases or cryo liquids