| 主权项 |
1. A method for determining a shape correction value for a laboratory liquid-analysis cuvette comprising a cuvette body with an opening side, a bar code and a cross-section for a photometric liquid analysis of a sample in an analyzer,
the analyzer comprising:
a photometer comprising a photometer transmitter and a photometer receiver which determine a signal value by measuring along a photometric measuring path; andan analyzer control; the method comprising: providing a digital camera; providing a measuring computer; providing a printer; providing the laboratory liquid-analysis cuvette; optically measuring at least one of an inside diameter and an outside diameter of the cuvette body with the digital camera by taking a picture of the opening side of the cuvette body; determining at least one of the inside diameter and the outside diameter of the cuvette body in a plurality of rotational positions with the measuring computer based on the optical measurement; generating an average value for at least one of the inside diameter and the outside diameter of the cuvette body with the measuring computer; calculating a shape correction value with the measuring computer from the average value, the shape correction value being a value which correlates with a deviation of an exact length of the photometric measuring path inside the cuvette body with an ideal photometric measuring path length; printing the shape correction value as a two-dimensional barcode for the cuvette body with the printer; and adhering the two-dimensional barcode comprising the shape correction value to the cuvette body, wherein, during the photometric liquid analysis of the sample, the shape correction value is provided to the analyzer control of the analyzer, and the analyzer control calculates an analyte measuring value from the signal value and the shape correction value. |
