Patent ID: 7879787

Claim:
A process for removing a residue from a substrate, comprising the steps of: preparing a diluted cleaning solution, said diluted cleaning solution made by adding water to a concentrated cleaning solution so that the amount of oxidizing agent therein is from about 0.005% to about 1.9% by weight of said cleaning solution, said concentrated cleaning solution comprising: a) at least one oxidizing agent in an amount of from about 2% to about 8% by weight based upon the total weight of said cleaning composition, said oxidizing agent comprising an inorganic peroxide or an organic peroxide or a salt thereof, a halogen compound, or an alkylating agent, or combinations thereof; b) at least one hydrophilic surfactant having an HLB value of 10 to 20 in an amount of from about 2% to about 9.5% by weight based upon the total weight of said cleaning composition; c) at least one hydrotrope surfactant having an HLB value of greater than 20 in an amount of from about 2.5% to about 12% by weight based upon the total weight of said cleaning solution; d) at least one ultraviolet light analyzable phenol alkoxide surfactant in an amount of from about 1% to about 8% by weight based upon the total weight of said cleaning solution, said analyzable surfactant having an analyzable functional group capable of being analyzed by ultraviolet light; and water; applying said diluted cleaning solution to the residue; optionally adding an amount of an alkaline compound or a formulated alkaline cleaner to said cleaning solution so that the pH thereof is from about 9 to about 14; removing said residue by rinsing with a fluid and producing a rinsate; and analyzing said rinsate with ultraviolet light and detecting the existence or absence of said analyzable ultraviolet light surfactant.