The high performing Clariflow II-Pharmaceutical Mini-Cartridges are designed to deliver sterilizing grade performance in critical biopharmaceutical applications. Mirrored anisotropic polyethersulfone (PES) membranes provide: superior fluid flow rates; extended on-stream life, and complete removal of microorganisms. The polyethersulfone membrane is inherently hydrophilic and therefore does not require the addition of wetting agents. This results in lowering extractables as well as compatibility with a wide range of chemicals across the pH range - including many organic solvents.