Chromatography experiment in chemistry class

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Dots marked with a felt-tip pen on filter paper move upwards in a special running fluid. This stretches the colours. Process is called chromatography and is used in chemistry and also in crime scene investigation (CSI).

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Size: 3000px × 2000px
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Photo credit: © Menyhert van der Haven / Alamy / Afripics
License: Royalty Free
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