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Ecolab Patents Rinse Aid With Synergistic Preservative

April 4, 2013

US Patent No. 8,383,570 B2; Ecolab USA Inc. has been awarded a US patent for preservative compositions that are comprised of sodium bisulfate, to bring the composition to a pH of about 2, and a combination of acids consisting of benzoic and sorbic acids. Each acid is present in an amount of from about 0.5 wt. % to about 20 wt. % with any remainder being water.
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