Method for identifying a transparent object with the aid of its absorption spectrum

1. A method for testing the authenticity of at least one transparent measurement cell consisting of a transparent material, the transparent material comprising at least one colorant in the material, the method comprising:

providing measurement values of an absorption of a plurality of transparent reference measurement cells at a plurality of wavelengths, storing absorption measurement values as reference values, and forming a reference class;

using a photometric detection device to measure an absorption of the at least one transparent measurement cell to be tested for authenticity at the plurality of wavelengths; and

comparing the absorption measurement values of the at least one transparent measurement cell to be tested for authenticity with the values of the reference class.

2. A method for testing the authenticity of a plurality of transparent measurement cells comprising a group of measurement cells of the same type, the group of measurement cells consisting of a transparent material comprising at least one colorant in the material, the method comprising:

providing measurement values of an absorption of a plurality of transparent reference measurement cells at a plurality of wavelengths, storing absorption measurement values as reference values, and forming a reference class;

using a photometric detection device to measure an absorption of the plurality of transparent measurement cells to be tested for authenticity at the plurality of wavelengths, storing absorption measurement values, and forming a test class; and

comparing values of the test class with the values of the reference class.

3. The method as claimed in claim 1 , wherein the at least one transparent measurement cell to be tested for authenticity comprises at least two colorants in the material.

4. The method as claimed in claim 1 , wherein the at least one transparent measurement cell to be tested for authenticity comprises at least one colorant from the azo dye group in the material.

5. The method as claimed in claim 1 , wherein measuring an absorption of the at least one transparent measurement cell to be tested for authenticity at the plurality of wavelengths includes measuring at wavelengths in a range from 220 nm to 1000 nm.

6. The method as claimed in claim 1 , wherein the number of transparent reference measurement cells is greater than the number of wavelengths used.

7. The method as claimed in claim 1 , wherein comparing the absorption measurement values of the at least one transparent measurement cell to be tested for authenticity with the values of the reference class includes using a distance measure.

8. The method as claimed in claim 1 , wherein comparing the absorption measurement values of the at least one transparent measurement cell to be tested for authenticity with the values of the reference class includes comparing the absorption measurement values of the at least one transparent measurement cell to be tested for authenticity with the centroid of the values of the reference class by using a distance measure.

9. The method as claimed in claim 2 , wherein comparing values of the test class with the values of the reference class includes using a distance measure.

10. The method as claimed in claim 2 , wherein comparing values of the test class with the values of the reference class includes comparing values of the test class with the centroid of the values of the reference class by using a distance measure.

11. The method as claimed in claim 7 , wherein the distance measure includes one of Euclidean distance and Mahalanobis distance.

12. The method as claimed in claim 1 , wherein comparing the absorption measurement values of the at least one transparent measurement cell to be tested for authenticity with the values of the reference class includes use of a multivariate evaluation method.

13. The method as claimed in claim 2 , wherein comparing values of the test class with the values of the reference class includes use of a multivariate evaluation method.

14. The method as claimed in claim 12 , wherein the multivariate evaluation method is selected from one of principal component analysis, soft independent modeling of class analogy, artificial neural network, and Mahalanobis-Taguchi system.

15. The method as claimed in claim 1 , wherein the at least one transparent measurement cell comprises a transparent material and the transparent material is glass or plastic.

16. The method as claimed in claim 15 , wherein the glass is natural quartz glass, synthetic quartz glass, or borosilicate glass.

17. The method as claimed in claim 15 , wherein the plastic is polypropylene, polystyrene, polyethylene, polyvinyl chloride, polymethyl methacrylate, or polyethylene terephthalate.

18. The method as claimed in claim 1 , wherein the at least one transparent measurement cell is a cuvette.

19. The method as claimed in claim 1 , wherein the at least one transparent measurement cell is a cuvette rotor.

20. The method as claimed in claim 1 , wherein the at least one transparent measurement cell is a microtitration plate.

21. A device for automatically carrying out a method for testing the authenticity of the at least one transparent measurement cell according to claim 1 , comprising:

means for measuring the absorption of the at least one transparent measurement cell at the plurality of wavelengths, means for storing the absorption measurement values, and means for controlling conduct of the comparison of the absorption measurement values of the at least one transparent measurement cell to be tested for authenticity with the values of the reference class,

wherein the device is associated with the transparent measurement cell comprising at least one colorant in the material.

22. The device as claimed in claim 21 , wherein the means for controlling the conduct of the comparison of the absorption measurement values of the at least one transparent measurement cell to be tested for authenticity with the values of the reference class comprises installed software.