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Chromatography flower

Chromatography flower

C039/0886

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Credit

SCIENCE SOURCE / SCIENCE PHOTO LIBRARY SCIENCE SOURCE / SCIENCE PHOTO LIBRARY

Caption

Paper chromatography is a physical method for separating mixtures. In this sequence a piece of filter paper is folded in a cone and placed over a glass of vinegar, such that the top of the cone is slightly above the rim. A coloured washable marker is used to draw a circle around the centre of the paper. When the vinegar reaches the paper, the ink dissolves and travels outward with the vinegar, in the process separating into constituent pigments.

Release details

Model release not required. Property release not required.

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