In each chromatography setup there is generally a so-called mobile ... (the material the fluid moves through). For example, in paper chromatography water is the mobile phase and paper is the ...

A pencil line is drawn, and spots of ink or plant dye are placed on it. There is a container of solvent, such as water or ethanol. A pure substance will only produce one spot on the chromatogram ...

SINCE the technique of paper partition chromatography is generally inapplicable to fat-soluble substances, we have investigated the use of alumina impregnated filter paper for this purpose.