Syringe Filter, PTFE, 25mm diameter, 0.2um, 10/pk - amazon.com
SimPure 10 Pack Sterile Syringe Filter PES, 0.22um Pore Size, 33mm Membrane Diameter, Hydrophilic Filtration High Throughput Sterile Packed Individually 4.3 out of 5 stars 199 1 offer from $13.99