What are the four methods of filtration?

The four common methods of filtration are gravity filtration, vacuum filtration, pressure filtration, and centrifugal filtration. Gravity filtration relies on the natural force of gravity to pull the liquid through the filter medium, making it slow but gentle and suitable for delicate substances. Vacuum filtration uses a pump to create suction below the filter, pulling the liquid through much faster, which is ideal for collecting solid crystals in chemistry labs. Pressure filtration forces the fluid through the filter using high pressure, commonly used in industrial settings and home water systems to handle large volumes or viscous liquids efficiently. Centrifugal filtration uses rapid spinning to generate centrifugal force, pushing denser particles outward against a filter wall while the lighter fluid remains in the center. Each method has specific advantages depending on the speed required, the nature of the mixture, and the scale of operation, allowing scientists and engineers to choose the most effective technique for their needs.