Generally aluminium oxide is another stationery phase well-known adsorbent, used in chromatography for less polar compounds. Aluminium oxide powder is a white to off white, fine and grained powder with highly porous from alumina. Its surface is extra polar than that of silica gel and reflecting the amphoteric nature of aluminium, has both basic and acidic features. Aluminium oxide chromatography attributes are determined by its specific (internal) surface area measured by the BET Method, it means pore diameter, and its pore volume, the last mentioned two being in relative to the specific surface area.