Abstract: Method and device for centrifugal separation of components of a liquid in which the liquid components are separated under the action of centrifugal force and then separately collected and discharged under the action of syphon mechanism.

Abstract: A high density liquid is used to simultaneously transfer a liquid sample and a liquid reagent from antechambers formed in a centrifuge rotor to a transmissive measurement chamber formed in a radially outer region of the same rotor. The antechambers for the sample and the reagent and a reservoir chamber for the high density liquid are all elongated radially of the rotor and in fluidic connection through the radially outermost ends of the respective chambers. First the high density liquid is introduced into the antechambers so as to occupy a radially outer portion of each chamber, and then the sample and the reagent are introduced into the respective antechambers through their radially innermost ends. Thereafter the sample and the reagent are forced to flow out of the respective antechambers to enter the measurement chamber by additionally introducing the high density liquid into the reservoir chamber while the rotor is rotating.