Patent ID: 7540926

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; and an aqueous solvent, wherein a total of the first surfactant and the second surfactant in the rinse solution ranges from about 2 to about 20 percent by weight of a total weight of the rinse solution and a ratio of the second surfactant to the first surfactant in the rinse solution ranges from about 2:1 to about 4:1; wherein, after the rinse solution is applied to the surface, a residual film remains on the surface.