Cold sterilant solution

A - Human Necessities – 01 – N

Patent

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A01N 59/00 (2006.01)

Patent

CA 2200478

A sterilant-disinfectant solution which may be used in the cleaning of metallic objects, particularly medical instruments. Medical instruments, which may include brass, copper, aluminium, stainless steel, carbon steel or plastic parts are sterilized or disinfected in an anti-microbial solution. The solution includes a triazole or other component for inhibiting the corrosion of copper and brass. Phosphates or other buffering agents adjust the solution pH in order to prevent the corrosion of steel. Molybdates or analogous compounds may be used to buffer the pH and have been found to inhibit the corrosion of aluminium by oxidizing agents. A sequestering agent is preferably provided for inhibiting hard water precipitation.

L'invention concerne une solution stérilisante-désinfectante qui peut être utilisée pour le nettoyage d'objets en métal, notamment d'instruments médicaux. Les instruments médicaux, tels que des pièces en laiton, en cuivre, en aluminium, en acier inoxydable, en acier au carbone ou en matières plastiques, sont stérilisés ou décontaminés dans une solution antimicrobienne. La solution comprend un triazole ou un autre composant destiné à inhiber la corrosion du cuivre et du laiton. Des phosphates ou d'autres agents tampon ajustent le pH de la solution afin d'empêcher la corrosion de l'acier. Des molybdates ou des composés analogues peuvent être utilisés pour tamponner le pH et ont montré qu'ils pouvaient inhiber la corrosion de l'aluminium par des oxydants. L'invention comprend de préférence un agent chélateur pour inhiber la précipitation de l'eau dure.

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