The Cameo 25GAS sterile syringe filter is recommended for sterilizing biological fluids, serum, or media additives, and for filtering probe solutions. Both the 25GAS and the nonsterile 30GA are excellent for the filtration of tissue culture media, and their high throughput characteristics make them a good choice for sterile or nonsterile clarification of even the most viscous proteinaceous solutions. The 25GAS (25mm) and 30GA (30mm) filters contain a 1.0 micron borosilicate glass prefilter and Cameo's Osmonics™ cellulose acetate membrane filter specifically designed to combine maximum sample recovery and high throughput when filtering or sterilizing viscous proteinaceous solutions. The membrane and prefilter are contained in a nonautoclavable acrylic housing(25GAS), or an autoclavable polypropylene housing(30GA) without adhesives. In both the 25GAS and the 30GA the membrane is supported bi-directionally, allowing both sample aspiration and injection. All units are labeled with pore size and filter type for quick identification, and all are tested to verify the integrity of the filter and the housing. Holdup volume of<60µL and sample volume of<150mL.