Besides hydrophilic PTFE membranes, the product has high recovery Durapore (PVDF). The five pore sizes, range from 0.1 to 5.0 µm. It has pre-sterilized units. The highly reproducible operation is enabled by quick filtration. It is applied for 15 mL tubes for fixed-angle rotors. It eliminates and precipitates particles from solvent and aqueous-based samples. It is the ultimate device for being used with nucleic acid and protein solutions.