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Scientists in a laboratory

Scientists in a laboratory

T875/0773

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Credit

GEOFF TOMPKINSON / SCIENCE PHOTO LIBRARY GEOFF TOMPKINSON / SCIENCE PHOTO LIBRARY

Caption

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.

Release details

Model release available. Property release not required.

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