44.6 MB (938.6 KB compressed)
3210 x 4851 pixels
27.2 x 41.1 cm ⏐ 10.7 x 16.2 in (300dpi)
SCIENCE SOURCE / SCIENCE PHOTO LIBRARY SCIENCE SOURCE / SCIENCE PHOTO LIBRARY
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. Four coloured washable markers are 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.
Model release not required. Property release not required.