ANDREW BROOKES, NATIONAL PHYSICAL LABORATORY / SCIENCE PHOTO LIBRARY ANDREW BROOKES, NATIONAL PHYSICAL LABORATORY / SCIENCE PHOTO LIBRARY
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Gas chromatography. Researchers using a gas chromatograph (GC) analyser. This has a coil that separates a gas sample into individual compounds so that they can be separately detected, identified and quantified. Here, it is being used to perform gas composition measurements on biogas samples. Photographed in 2015, at the National Physical Laboratory, Teddington, UK.
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