Sterile Syringe filters wholesale for hplc membrane: ptfe, pvdf, mce, pes, ca, etc Diameter: 25mm / 13mm, pore size: 0.22um, 0.45um. Send Inquiry Chat Now Captiva Syringe Filters | HPLC - Aijiren Use syringe filters to extend column lifetime, flow rates & loading volumes when preparing small-volume samples for HPLC and ion chromatography.