An apparatus for separating cuvettes having projections projecting outwards from a body for receiving liquid and being supplied in bulk form, comprising: a reservoir defining a reservoir space, the reservoir being provided with an inlet for supplying cuvettes in bulk form to the reservoir space; a separator defining a separator space communicating with the reservoir space, the separator being provided with an outlet for outputting separated cuvettes from the separator space; characterized in that said apparatus further comprises: a reservoir spiral contained in the reservoir space, adapted to transport cuvettes to the separator space by rotating the reservoir spiral; a separator spiral contained in the separator space and adapted to transport cuvettes to the outlet by rotating the separator spiral, wherein the reservoir spiral and the separator spiral can be rotated independently from each other, wherein adjacent turns of the separator spiral have an inter-distance dimensioned such that a cuvette can be held in a holding position in which the projections projecting outwards from the body for receiving liquid rest on adjacent turns, with the body dipping into a spiral groove between the adjacent turns, wherein the separator spiral is configured in such a manner that cuvettes slide along the turns in the holding position by the action of gravity into a lowest position of the separator spiral when rotating the separator spiral. a reservoir defining a reservoir space, the reservoir being provided with an inlet for supplying cuvettes in bulk form to the reservoir space; a separator defining a separator space communicating with the reservoir space, the separator being provided with an outlet for outputting separated cuvettes from the separator space; characterized in that said apparatus further comprises: a reservoir spiral contained in the reservoir space, adapted to transport cuvettes to the separator space by rotating the reservoir spiral; a separator spiral contained in the separator space and adapted to transport cuvettes to the outlet by rotating the separator spiral, wherein the reservoir spiral and the separator spiral can be rotated independently from each other, wherein adjacent turns of the separator spiral have an inter-distance dimensioned such that a cuvette can be held in a holding position in which the projections projecting outwards from the body for receiving liquid rest on adjacent turns, with the body dipping into a spiral groove between the adjacent turns, wherein the separator spiral is configured in such a manner that cuvettes slide along the turns in the holding position by the action of gravity into a lowest position of the separator spiral when rotating the separator spiral. a reservoir spiral contained in the reservoir space, adapted to transport cuvettes to the separator space by rotating the reservoir spiral; a separator spiral contained in the separator space and adapted to transport cuvettes to the outlet by rotating the separator spiral, wherein the reservoir spiral and the separator spiral can be rotated independently from each other, wherein adjacent turns of the separator spiral have an inter-distance dimensioned such that a cuvette can be held in a holding position in which the projections projecting outwards from the body for receiving liquid rest on adjacent turns, with the body dipping into a spiral groove between the adjacent turns, wherein the separator spiral is configured in such a manner that cuvettes slide along the turns in the holding position by the action of gravity into a lowest position of the separator spiral when rotating the separator spiral.