Alca 40 Plus is a liquid alkaline formulation with high causticity, suitable for the cleaning of closed lines in all sectors of the alimentary industry and beverage bottling. Alca 40 Plus is able to easily remove all residues of fat, proteins and oil from the treated surfaces. The presence of controllers of the water hardness enables to work even with waters with an average hardness. In order to optimize the results of washing cycles, we suggest the following descaling acid phase, with a periodicity to be estimated.