Cuvettes for spectrophotometry applications in the visible spectrum. The production technology and quality control ensure the reproducibility of the cuvettes. The absorption changes are kept within the ±1 % interval, an important condition for analyses in series.Cuvettes for spectrophotometry applications in the visible spectrum. The production technology and quality control ensure the reproducibility of the cuvettes. The absorption changes are kept within the ±1 % interval, an important condition for analyses in series.