Which of the following is an example of a centrifugal analyzer?

• A. Picollo
• B. IL Monarch
• C. Cobas Bio
• D. SMA

Answer: (A)

Centrifugal analyzers move liquids through a rotating path using centrifugal force, typically with a rotor or carousel of cuvettes, and measure the reactions as the contents flow past a fixed detector. The Picollo system fits this pattern: it uses a rotating rack to shuttle samples and reagents through reaction zones, with photometric readings taken as the mixtures pass by the detector. This flow-through, rotor-based approach is the hallmark of centrifugal analyzers, allowing multiple tests to be performed efficiently with small volumes.

The other listed instruments aren’t described as centrifugal analyzers; they represent different automation styles such as flow-based or immunoassay platforms that don’t rely on spinning a rotor to drive liquids through reaction paths.