There is disclosed a cleaning composition comprising (i) 0.1 to 10 percent by weight of the cleaning composition of a biofilm removing detergent solution comprising a combination of an alkyl (C8-18) polysaccharide, a non-ionic surfactant and a nitrogen containing surfactant-biocide (ii) 2 to 80 percent by weight of the cleaning composition of one or more polar solvent (iii) 0.5 to 15 percent by weight of the cleaning composition of one or more primary amine (iv) two or more chelating agents (v) 0.1 to 5.0 percent by weight of the cleaning composition of an alkaline buffer system providing a pH of about 11.5 to 13.3 in aqueous solution (vi) 0.005 to 5.0 percent by weight of the cleaning composition of an alkoxyaminosilane. Also disclosed is a process of cleaning, decontaminating and/or passivating metallic surgical instruments and/or equipment using the composition of the invention.