Abstract: A gripper head for gripping a reaction cuvette in an appliance for automatically analyzing chemical or biological samples, the head comprising pivoting fingers designed to engage lugs that extend from two opposite sides of the top end of the cuvette, an electromagnetic or pneumatic actuator for controlling pivoting of the fingers in one direction, and return springs urging the fingers to pivot in the opposite direction.

Abstract: Device for supplying an automatic analysis machine with reaction cuvettes, comprising means (10, 20, 22) that define a housing for a cassette (14) containing superposed rows of reaction cuvettes, a buffer storage zone (16) for reaction cuvettes as they leave the cassette (14) positioned in its housing, and destacking means (18) that take up the cuvettes as they leave the buffer storage zone (16) and convey them one by one to a point at which the cuvettes enter the analysis machine.