47mm 0.2 um syringe filter for sterilization Whatman 10411411, PTFE Membrane, TE Range (TE 35), 0.2 um Purchase now Whatman 10411411, PTFE Membrane, TE Range (TE 35), 0.2 um pore size, 47 mm circle (50 pcs) Expert advise with 10 years in the business.