Patent ID: 8430321

Claim:
A sample analyzer for analyzing a sample by using a reagent contained in a reagent container, the sample analyzer comprising: a reagent container holder configured to hold a reagent container to which an information storage medium is attached; an actuator configured to actuate the reagent container holder to move the reagent container held by the reagent container holder to a first position and a second position different from the first position; a reagent aspirator configured to aspirate a reagent from the reagent container when the reagent container is located at the first position; an information communication section configured to write reagent amount information regarding an amount of the reagent in the reagent container, into the information storage medium attached to the reagent container when the reagent container is located at the second position; and a controller configured to control at least the actuator and the information communication section, wherein the controller is configured to control the actuator and the information communication section such that after a reagent in a first reagent container has been aspirated by the reagent aspirator and before a reagent in a second reagent container which is a next reagent aspirating target after the first reagent container is aspirated by the reagent aspirator, the first reagent container is moved from the first position to the second position and the reagent amount information is written into an information storage medium of the first reagent container.