👉 A fluid filter, often used in various industrial and household applications, is a device designed to separate solid particles from liquids or gases by passing the mixture through a porous medium. This medium, typically made of materials like fiberglass, ceramic, or synthetic membranes, traps contaminants while allowing the desired fluid to flow through. The filter's efficiency depends on its pore size, which can be tailored to capture specific particles, making it suitable for applications ranging from water purification and air filtration to chemical processing and oil refining. The fluid passing through the filter is clean, while the retained solids are collected as a filter cake, which can be periodically removed or regenerated.