An apparatus, system for analyzing, and process for separating cuvettes supplied in bulk form are presented. The apparatus comprises a reservoir with an inlet for supplying cuvettes in bulk form to a reservoir space, a separator with an outlet for outputting separated cuvettes from a separator space communicating with the reservoir space, a reservoir spiral contained in the reservoir space to transport cuvettes to the separator space by rotating the reservoir spiral, and a separator spiral contained in the separator space to transport cuvettes to the outlet by rotating the separator spiral. Adjacent turns of the separator spiral have an inter-distance dimensioned such that a cuvette can be held in a holding position in which projections projecting outwards from a body for receiving liquid rest on adjacent turns, with the body dipping into a spiral groove between the adjacent turns.