Millex sterile needle filter is an ideal choice for sterilization of organic solvents, aqueous solutions, or air/gas. Many sample preparation methods specify the use of Millex filters due to their unparalleled quality and consistency. Millex filters not only have the smallest retention volume and faster flow rate, but also can withstand higher operating temperatures and are chemically compatible with various samples and solvents, resulting in low filtration rates for extractable impurities. Millex filters are produced to the highest quality standards in an automatically controlled environment. The sterile device is accompanied by a quality inspection report, and the selected device is marked for medical use.