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Chromatography is used to separate the components of marker ink by identifying and determining the amount of each component. The procedure involves placing a water solution in a beaker and marking filter paper with the ink. The paper is then placed in the beaker so that the mark rises above the water level. Alcohol carries the ink components up the filter paper at different rates, separating the colors which can then be identified as purple, orange, yellow or brown. Chromatography separates pigments and colors from a mixture based on how each interacts with the solvent.





