COLIN CUTHBERT / SCIENCE PHOTO LIBRARY COLIN CUTHBERT / SCIENCE PHOTO LIBRARY
Gas chromatography. Technician preparing a sample for gas chromatography. He is drawing the liquid to be studied into a fine capillary tube. Gas chromatography is carried out on gases or volatile liquids, and can separate complex mixtures of compounds into individual components. This allows their composition to be analysed and particular fractions isolated.
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