Scientists in a laboratory

Scientists in a laboratory

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Credit: GEOFF TOMPKINSON/SCIENCE PHOTO LIBRARY

Caption: MODEL RELEASED. HPLC. Male chemists (right) using High Performance Liquid Chromatography (HPLC) equipment. HPLC is used to separate out mixtures of organic molecules. The sample is mixed with an inert liquid and then forced by high pressure through a column of tightly packed microscopic beads. The components of the mixture vary in the extent to which they adsorb onto the surface of the beads. Because of this, they travel through the column at different rates, each component emerging separately. The technique is often used in the food industry to determine the amount of impurities or additives in foodstuffs.

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Keywords: apparatus, chemical, chemist, chemistry, chromatography, equipment, high performance liquid chroma, high pressure liquid chromatog, hplc, industry, scientist, technician, technology

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