Abstract: Centrifuge includes a plate, a detector for the position of the plate, a monitoring and control unit, to turn the plate and to stop it in predetermined angular positions; characterized by several balancing containers, a centrifugal detector, a device for providing a balancing product located at a fixed station, calculating means adapted to determine an angular position (?B) and a mass (m0) of an unbalance (B) as well as an angular position (?E) for a balancing mass (m1). The monitoring and control unit control the stopping of the plate in a predetermined angular position for the balancing mass (m1) in correspondence with the fixed station, and to control said device for supplying a balancing product to fill the one of the balancing containers that is located at the fixed station.

Abstract: An apparatus for analyzing liquid samples packed in tubes (6) closed with a top (7) capable of being perforated, includes a support (4) for the tubes and a unit (8) for sampling an aliquot from each tube and delivering it into a receptacle for treatment and/or analysis, the unit (8) including a hollow needle (45) connected to a suction/delivery device and vertically mobile; the support (4) has a circular tray provided with several tube-holders (5) on its periphery and capable of rotating about a vertical axis to bring a position successively and selectively the tubes (6) borne by the tube-holders (5) in line with the unit (8); each tube-holder (5) is connected to the tray (4) through a linkage (31) with two degrees of freedom.

Abstract: Centrifuge comprising a plate (2), a detector (26) for the position of the plate, a monitoring and control unit (27), to turn said plate and to stop it in predetermined angular positions; characterized by several balancing containers (6), a centrifugal detector (29), a device (21) for providing a balancing product located at a fixed station, calculating means adapted to determine an angular position (?B) and a mass (m0) of an unbalance (B) as well as an angular position (?E) for a balancing mass (m1), said monitoring and control unit (27) being adapted to control the stopping of the plate (2) in a predetermined angular position for the balancing mass (m1) in correspondence with said fixed station, and to control said device (21) for supplying a balancing product to fill the one of the balancing containers (6) that is located at the fixed station.