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US 5,395,545 AGranted
Cleaning solution for automated analyzers
AssigneeAkzo N.V.
InventorsTimothy T. Fischer, Maria L. Bell, Regina J. Bowling
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Abstract
This invention relates to a novel cleaning solution for use particularly with automated analyzers used in clinical laboratories and a method of cleaning a surface with the novel cleaning solution. This solution eliminates problems of cross contamination of samples due to reagent carryover, brought about by the analyzer's probe that dispenses more than one reagent. In particular, this solution resolves carryover problems in coagulation assays performed with automated systems.
Claims12
An aqueous cleaning solution comprising:
- a. bile salt;
- b. anionic surfactant;
- c. organic acid;
- d. sodium ions;
- and
- e. water,
- wherein said solution removes substantially all of a reagent selected from the group consisting of thrombin, thromboplastin, and phospholipids from a surface.
4 more elements
An aqueous cleaning solution comprising:
- a. taurocholic acid in a concentration range from about 0.2% to about 1.0%;
- b. a phosphorylated ethoxylated anionic surfactant in a concentration range from about 0.2% to about 2.0%;
- c. formic acid in a concentration range from about 0.2% to about 5.0%;
- d. sodium chloride in a concentration range from about 0.5% to bout 5.0%;
- e. water to q.s. to 100%, wherein said solution substantially removes all of a reagent selected from the group consisting of thrombin, thromboplastin, and phospholipids from a surface.
2 more elements
Dependencies are inferred from the claim text.