Automatic biochemical analyzer is a high-grade medical testing equipment, colorimetric cup is the optical part of the biochemical analyzer, its internal and external surfaces as long as the adherence of very little material or scratches can be caused by the results of the test have a significant systematic error, so than the colorimetric cup cleanliness requirements are very high. Fully automatic imported biochemical analyzer colorimetric cup has several types: one type is fully closed, colorimetric cup material is quartz glass or plastic material, it is necessary to flush with a special water processor, daily consumption of a large amount of water; the other type is open, colorimetric cup material is a high-level plastic products, colorimetric cup needs to be manually rinsed.