Apparatus and Method for Automated Analysis

An automated analyzer is offered which can dilute an analyte repeatedly without contamination due to carry-over and thus can yield reliable analysis results. The analyzer has an analyte turntable for holding analyte containers in which analyte is stored, a dilution turntable for holding dilution containers for storing a diluent, a dilution probe for aliquotting a liquid between two containers held on these two turntables, respectively, a diluent vessel for storing a diluent, and a diluent supply mechanism for supplying the diluent into the diluent vessel. The dilution probe has a function of aliquotting the diluent stored in the diluent vessel into the dilution containers held on the dilution turntable. The diluent vessel has a diluent discharging mechanism for discharging the diluent from inside the diluent vessel.