The MAS-B Series Filter Cartridges are Beverage Grade Absolute Rated Membrane Filter Cartridges constructed of Polyethersufone. These filters are specifically designed for reduction of bacteria and spoilage organisms in beverage applications and are validated for removal of bacteria and spoilage organisms. Each filter lot coded for product tracing and comes with certificate of quality assurance. They are an asymmetric, hydrophilic polyethersulfone membrane filter and have absolute retention from 0.1 to 1.2 microns. Manufactured in a Class 10,000 clean room for high purity and been 100% flushed and integrity tested to ensure rated pore size. With high surface area for maximum throughput and long service life also suitable for steam or autoclave sterilization and hot water or chemical sanitization. Constructed of FDA listed materials and meets USP Class VI Biological Test for plastics.