Cal is a special grade of activated carbon for the removal of color and purification from aqueous or organic liquids like glycerine, urea, monosodium glutamate, organic esters, caustic liquours, muriatic acids. It can be used as a fixed bed or moving beds. 12x40 is the grade for maximum adsorption of liquids with low to medium viscosity and gives low head loss. Cal provides a high pore volume, high density and right pore structure for maximum odour and colour removal. This carbon wets readily and does not float. It complies with AWWA and codex reqirements.