Used in density gradient centrifugation to separate biological molecules like DNA and viruses based on buoyant density. Commonly employed in molecular biology and biochemistry research.

Serves as a source of caesium ions in chemical synthesis and catalysis.

Utilized in the preparation of other caesium compounds for specialized industrial and research applications.

Applied in some medical diagnostic procedures and experimental cancer treatments, though limited due to toxicity concerns.

Used in radiation detection devices and certain types of ion-selective electrodes.