
A set of cuvettes the side walls of whose cuvettes (2) are provided with a layer (29) of material that prevents measurement radiation and/or light (22) directed at the walls from passing through the side walls. The layer (29) inhibiting the passage of the measurement radiation may be placed on the inside face and/or on the outside face of the side walls of the cuvettes (2). When the inside face of the measurement window (16) in the cuvettes (2) is coated with a thin layer (34) of the material co...











