Clariflow II-Pharmaceutical Grade filter cartridges utilize a unique asymmetrical polyethersulfone membrane to provide sterile filtration to meet the specific needs of the pharmaceutical industry. The asymmetrical pore structure and high voids volume offer high dirt-holding capacity, exceptional flow rates and higher throughputs. The polyethersulfone membrane is inherently hydrophilic and does not require the addition of wetting agents. This results in lowering extractables as well as having compatibility with a wide range of chemicals across the pH range- including many organic solvents. Clariflow II-P filters have very low non-specific chemical and protein binding characteristics, making them suitable for proteinaceous solution applications where product loss must be minimized.