Density gradient centrifugation is a technique that allows the separation of cells, organelles and macromolecules, depending on their size, shape and density. A density gradient is created in a centrifuge tube by layering solutions of varying densities...

Sucrose gradient centrifugation is a type of centrifugation often used to purify enveloped viruses (with densities 1.1-1.2 g/cm³) and ribosomes, and also to separate cell organelles from crude cellular...