Separation Techniques Filtration – Used to separate insoluble (undissolved) solids Decanting – Used to separate insoluble solids from liquids from liquids. by simply pouring out the liquid above a solid. Apparatus Apparatus Chromatography – Used to separate dyes from a mixture. Apparatus Evaporation – Used to separate solids from liquids. Apparatus Centrifugation – Used to separate an insoluble (undissolved) solid from a liquid through high speed circular motion. Apparatus Magnetism – Used to separate magnetic substances from non-magnetic substances. Apparatus Crystallization – Used to separate dissolved solids in a solution. Common purification of solids method. Fractional Distillation – Uses boiling points to separate mixtures of liquids. Apparatus – Distillation – Used to separate dissolved solids in liquids. Apparatus – Melting Point – Uses melting points to separate mixtures of solids. Density – Uses density to separate mixtures. Freezing Point – Uses freezing points to separate mixtures of liquids. *ALL PHYSICAL PROPERTIES CAN BE USED TO SEPARATE MIXTURES.