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→Method
===Method===
#Take a piece of [[chromatography]] paper of [[width]] 6cm and [[height]] 10cm.#Using a ruler draw a line with pencil across the [[width]] 2cm up from the end.#Add a dot of each unknown sample on the pencil line at 1cm [[interval]]s.#Suspend the [[chromatography]] paper in a suitable [[solvent]] just below the pencil line with most of the paper above the [[solvent]].#Wait until the [[solvent]] stops rising up the paper.#Use a ruler to measure the distance that the [[solvent]] has traveled up the paper.#Use a ruler to measure the distance that the different [[dye]]s have traveled up the paper.#Use the following equation to find the [[Retention Factor]] for each [[dye]]::<math>R_f = \frac{d_c}{| class="wikitable"d_s}</math>|-:Where:|:R<sub>f</sub> = [[FileRetention Factor]]:ChromatographyDiagram.png|center|500pxd<sub>c</sub> = distance moved by the [[chemical]]|}:d<sub>s</sub> = distance moved by the [[solvent]]