Integrated washing and sterilization process

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A biocidal, aqueous composition for killing bacteria, spores, fungi, and viruses on nonabsorbent surfaces comprises at least one quaternary ammonium compound, at least one aliphatic dialdehyde having from two to six carbon atoms, and at least one aliphatic hydroxyl compound having form one to eight carbon atoms. This sterilant is stable for weeks, is especially useful between pH 4 to 9, and may additionally comprise a chelating agent.

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