What is the operating principle of centrifugal analyzers?

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Centrifugal analyzers use spinning to move liquids, enabling transfer and mixing of samples with reagents inside a rotor. Many wells hold samples and reagents, and when the rotor spins, centrifugal force pushes the liquids into reaction zones where mixing occurs. Because a single spin can involve many samples, these systems perform batch analysis, processing multiple tests simultaneously and reading the results optically as the reactions proceed. This contrasts with flow-based or random-access instruments that handle samples one by one or feed reagents continually rather than in a parallel, spin-driven batch format.