分液漏斗Separatory funnel是实验室中使用的一种玻璃仪器。用来分离两种密度不同且不互溶（不相混合）的液体物质，例如水和油。

主体为倒梨形的玻璃容器，上方可用玻璃塞密封，下方经一个阀门可由玻璃管导出液体。

使用方法：

A separatory funnel, also known as separation funnel, separating funnel, or colloquially sep funnel, is a piece of laboratory glassware used in liquid-liquid extractions to separate (partition) the components of a mixture into two immiscible solvent phases of different densities. Typically, one of the phases will be aqueous, and the other a non-polar lipophilic organic solvent such as ether, MTBE, dichloromethane, chloroform, or ethyl acetate. All of these solvents form a clear delineation between the two liquids. The two layers formed are usually known as the organic and aqueous phases. Most organic solvents float on top of an aqueous phase, though important exceptions are most halogenated solvents. The organic solvent used for the extraction must not react with the substance to be extracted or with water. It should also have a low boiling point so it can be easily removed from the product.