Field Flow Fractionation

**Semantic type:** Laboratory Procedure

**Definition:** An analytical technique used to separate a multi-component sample by applying a retarding force or gradient to a sample in a solvent stream, which drives the sample toward a thin channel wall. The velocity at which a component leaves the center solvent stream is dependent on its physical characteristics.

**Synonyms:** - AFFF - Asymmetrical Flow Field-Flow Fractionation - Electrical Field-Flow Fractionation - FFF - Field-Flow Fractionation - Flow Field-Flow Fractionation - Sedimentation Field-Flow Fractionation - Thermal Field-Flow Fractionation