Which yielded the better chromatogram-the ink from the pentel pen, the sign pen or the ballpen?

The ink from the sign pen.

Explanation:

Hello,

At first, remember that chromatogram is defined as a visible record (such as a graph) showing the result of separating the components of a mixture by chromatography.

Now, in this case, one can obtain the best chromatogram by using sign pen since it is the most rapid when moving through the paper.

Best regards.

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