Decantation is a method of separation of mixtures of solid and liquid, or two or more immiscible liquids. The mixture is allowed to settle down into multiple layers, and the lightest/heaviest liquid layers are poured off. Examples of this technique include: 1. Separation of mud-water mixture (solid-liquid mixture) 2. Separation of oil and water (immiscible liquid mixture) 3. Separation of kerosene and water.