Patent ID: 9625392
Date: 2017-04-18
CPC Classifications: A01N,C11D,G01N,Y02A

Claim:
1. A method of using a composition on an aqueous basis comprising a) at least one strong oxidant, b) a color indicating system, and c) one or more thickening agents, the method comprising: superficially applying the composition to a surface with organic substances; and detecting any contaminants on the surface by visual control after the superficial application, wherein the composition is not flowable for a predefined period after the superficial application due to an effect of the one or more thickening agents, wherein the one or more thickening agents are stable in the composition during the predefined period, wherein the one or more thickening agents are selected from the group consisting of synthetic sheet silicates, pyrogenic silicic acid, fatty alkyl (benzene) sulfates, sulfonates, carboxylates, phosphates and aminoxides and mixtures thereof, and wherein a color change in the composition superficially applied to the surface during the predefined period indicates organic contaminants being present on a portion of the surface, and wherein the one or more thickening agents have a stabilizing effect on the at least one strong oxidant, and wherein said one or more thickening agents produces a stabilizing effect on the color change when said composition reacts with any contaminants in the composition, such that the occurrence of false-positive detection results is reduced.