Millex® syringe filters are available as sterile syringe filters or nonsterile syringe filters. Produced with Millipore® membranes, including PES, PVDF, PTFE, and Durapore® membranes, Millex® syringe filters are available as hydrophobic filters and hydrophilic filters in a variety of pore sizes, including common pore sizes 0.2 μm, 0.22 μm