This Puradisc™ 13 syringe filter combines premium quality and economy. These 13mm syringe filters are ideal for the quick efficient filtration of samples up to 10mL volume. They are produced from pigment-free polypropylene plastic for sturdy & reliable filtration. Low hold-up volume of less than 25µL for maximum sample recovery. Applications include: HPLC aqueous sample preparation, Biological sample preparation, Buffer solutions, Salt solutions, Tissue culture media, Irrigation solutions and Sterile isolation. Inlet/Outlet Connections: Female Luer Lock/Male Luer. Membrane: Polyethersulfone. Retention: 0.45µm. 50/Pack. Whatman™ #: 6780-1304.