Affinity ultrafiltration is a highly sophisticated separation technology that is used to purify and separate complex biological samples. This technique relies on the binding properties of various biological molecules such as proteins, enzymes, and antibodies. In scientific literature, affinity ultrafiltration is also referred to as binding membrane filtration, chromatography filtration, and bioseparation. The term membrane affinity chromatography is also used to describe this technique, which utilizes a specific membrane as a binding partner for target molecules. Affinity dialysis is another term used to describe the process of applying high pressure to a complex biological sample, allowing only the target molecule to pass through the membrane.