Used to separate mixtures of soluble substances. Works because the different substances move up the chromatography paper at different speeds, so they separate.
- Pencil line drawn on chromatography paper
- Dyes being tested are spotted along the line
- Paper lowered into solvent above the pencil line
- Dyes travel up the paper, producing spots of each substance in their mixture at different heights
Used to find the substances used in dyes, food colouring and plant pigments.
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