Chromatography. Scientist with column chromatography equipment. Column chromato- graphy is used to separate the various components from a mixture of chemicals. During this process the mixture is put in the top of the column. The mixture passes through a porous substance which selectively hinders the movement of each of the components. This means that some components will travel further in a given time than others, allowing each of them to be individually collected. Photograph of equipment used to isolate chemicals produced by microorganisms, including genetically-engineered varieties.
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