. Why do you use a pencil and not a pen to mark TLC plates?

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asked Oct 27, 2022 30.5k views

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Jbigman · Answer 1 · 2022-11-02T16:29:38+0000

Answer:

Pencil is always used to mark chromatography paper or TLC plates because ink may run and interfere with the chromatogram. ... As soon as the paper/plate is taken out, mark the solvent front with a pencil before the solvent evaporates and the front becomes impossible to see.

. Why do you use a pencil and not a pen to mark TLC plates?

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