| 摘要 |
An apparatus for positioning a cuvette in an optical beam path of an optical measuring instrument, with a shaft for axially inserting a cuvette, and means for pressing a cuvette against at least one wall surface of the shaft, which comprise at least one arrangement of a magnet, stationarily arranged with respect to the shaft, and a magnet movable with respect to the same, which are oriented such that the movable magnet tends to occupy a certain position with respect to the stationary magnet, in which the movable magnet engages at least partially into the shaft.
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