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US 12,351,775 B2Granted
Neutralizing instrument reprocessing
AssigneeEcolab USA Inc.
InventorsWendy Lo, Michael S. Rischmiller, Erik C. Olson
Life of this patent
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Abstract
A neutralizer, destainer/descaling, and passivating composition and methods of using the same on metal surfaces are disclosed. The compositions are particularly well suited for the treatment of health care surfaces and other hard surfaces in need of treatment. In particular, the neutralizer, destainer/descaling, and passivating composition is an acid-based composition for use in instrument reprocessing.
Claims9
A neutralizer, destainer, and passivating composition comprising:
- from about 40 wt-% to 75 wt-% of citric acid and an additional weak acid having a pKa greater than about 2.5, wherein the additional weak acid comprises from about 0.001 wt-% to 10 wt-%;
- an alcohol alkoxylated nonionic surfactant according to the formula:
- R1—O—(EO)x(PO)y-Π wherein R is a straight-chain C10-C16 alkyl, and wherein x is from 4 to 8, and wherein y is from 2 to 5;
- and
- water.
2 more elements
Dependencies are inferred from the claim text.