Patent ID: 8163101

Claim:
A method for cleaning contaminated surfaces of surgical waste management equipment, the method comprising the steps of: rinsing surfaces of the equipment with water to remove water soluble contaminants and waste material; and applying an alkaline rinse solution having a pH ranging from 8.5 to about 10 to the surfaces of the equipment to provide a residual film thereon, wherein the alkaline rinse solution consists essentially of: a first substantially hydrophilic nonionic alkoxylated alcohol surfactant having an HLB value ranging 12 to about 15; a second substantially hydrophilic nonionic alkoxylated alcohol surfactant having an HLB value ranging from about 16 to 20; a bio-film permeation agent; an aqueous solvent; and an optional chelating agent, wherein a total amount of the first substantially hydrophilic nonionic alkoxylated alcohol surfactant and the second substantially hydrophilic nonionic alkoxylated alcohol surfactant in the alkaline rinse solution ranges from about 2 to about 20 percent by weight of a total weight of the rinse solution; wherein, after the rinse solution is applied to the surface, the residual film remains on the surface.