Investigating water transport in plants using a potometer

Pigment colour Distance pigment has travelled / mm Rf value Suggested identity of the pigment Bright yellow 41 0.93 Carotene Grey 20 0.45 Pheophytin a Pale Brown 16 0.36 Pheophytin b Blue green 12 0.27 Chlorophyll a Yellow 11 0.25 Xanthophyll – Lutein Green 10 0.23 Chlorophyll b Pale yellow 7 0.16 Xanthophyll – Violaxanthin Pale yellow 3 0 ... ................
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