AS ONE Membrane Filter, 3-6727-04 (Pack of 100 Piece). A membrane filter is a specialized porous material designed to separate particles and substances from liquids or gases through a process known as filtration. Composed of various materials such as polymers, ceramics, or metals, these filters contain a network of tiny pores that allow the passage of certain molecules while blocking larger particles. Membrane filters are available in various pore sizes, enabling the precise control of the filtration process. They are commonly used in scientific, industrial, and medical applications where particle separation, purification, or analysis is essential. In laboratory settings, membrane filters are crucial tools for tasks like sample clarification, sterilization, and analysis of suspended solids or microorganisms. In industrial processes, they aid in the purification of liquids or gases, such as the removal of contaminants from water or the separation of components in the pharmaceutical or food industries. Microfiltration, ultrafiltration, nanofiltration, and reverse osmosis are filtration techniques that utilize membrane filters at varying levels of pore size. Microfiltration is employed for larger particle removal, while ultrafiltration and nanofiltration target smaller molecules. Reverse osmosis, involving the tightest membrane pores, is used to desalinate water and remove extremely small solutes. Membrane filters are chosen based on factors like membrane material, pore size, and compatibility with the substances being filtered. Some membranes are chemically treated to enhance selectivity or promote specific interactions with the filtered material. In summary, membrane filters are versatile components that find applications in various fields to separate and purify substances by selectively allowing the passage of specific molecules while retaining others. Their customization, efficiency, and accuracy make them essential tools for tasks ranging from laboratory research to industrial processes, contributing to improved quality, safety, and analysis in numerous industries.