Patent ID: 8647443

Claim:
A method of cleaning an automatic biochemical analyzer, comprising: obtaining a cleaning solution configured to be compatible for use with a biochemical analyzer, the cleaning solution comprising: at least one anionic surfactant present in a weight percentage of between 0.1 to 8.0%, the anionic surfactant comprising an alkyl sulfonate having a structure of formula (I): R 1 —SO 3 X (I), wherein R 1 is an alkyl group having between 12 to 18 carbon atoms, and X is an alkali metal ion; at least one nonionic surfactant present in a weight percentage of between 0.01 to 15.0%; an alkali metal hydroxide present in a weight percentage of between 2.0 to 15.0%; an alkali metal citrate present in a weight percentage of between 1.0 to 10.0%; and a buffering agent stabilizing the pH value above 13.0, the buffering agent present in a weight percentage of between 1.0 to 10.0%; and applying the cleaning solution to the automatic biochemical analyzer.