Wholesales 0.45 micron syringe filter hplc manufacturer. Custom 0.45 micron hplc syringe filter Whatman-Chromato [] Whatman 10443425 ZapCap Cellulose Regenerated Bottletop Filter Unit, PTFE Membrane, 0.45 Micron, 500mL Volume (Pack of 12) B00394F8D8 $224.35 $135.66 Features: For filtration of medium volumes, cell culture media and HPLC