Advertisements In laboratories, benchtop centrifuges are used to separate and purify molecular mixtures in liquid media depending on their density gradient. Biochemistry laboratories use centrifugation extensively for studying and isolating cells, subcellular fractions, molecular complexes, and biological macromolecules such as proteins, DNA, and RNA. Centrifuges are high-speed devices that require vacuum, gravitational acceleration, and centrifugal … Read more