Patent ID: 7875238

Claim:
A device for generating aqueous chlorine dioxide solutions when the device is contacted with liquid water, the device comprising: first and second substrates; a first adhesive layer on a surface of the first substrate and a second adhesive layer on a surface of the second substrate; an alkali metal chlorite or alkaline earth metal chlorite that is adhered to the first adhesive layer on the first substrate; and an acid material which produces an acid upon exposure to liquid water that is adhered to the second adhesive layer on the second substrate; wherein the first and second substrates are disposed such that the chlorite and the acid material are substantially facing each other and physically separated from each other by spacer means between the substrates wherein the chlorite produces a chlorite boundary layer upon exposure to liquid water and the acid material produces an acid boundary layer upon exposure to liquid water, and wherein the chlorite boundary layer comes into contact with the acid boundary layer to thereby produce an aqueous chlorine dioxide solution.