The MAT Series Filter Cartridges are PTFE Absolute Rated Membrane Filter Cartridges. These Polytetrafluoroethylene (PTFE) membrane filter cartridges are constructed in polypropylene hardware for a wide range of industrial applications. They have an Absolute retention from 0.1 to 1.0 microns and outstanding hydrophobicity and water intrusion resistance. They have been 100% flushed and integrity tested to ensure rated pore size and are manufactured in Class 10,000 clean room for high purity. Meets applicable CFR criteria and USP Class VI Biological Test for plastics and are suitable for steam or autoclave sterilization and hot water or chemical sanitization.