Reaction cup for sample analyzer and inner wall treatment method thereof

The invention relates to the technical field of chemical analysis equipment, in particular to a reaction cup for a sample analyzer and an inner wall treatment method thereof.The reaction cup comprises a reaction cup body, and the surface roughness of the inner wall of the reaction cup body is Ra0.2-Ra6.3; the cup bottom of the reaction cup body is of a conical structure, and the conical angle of the cup bottom is 100-120 degrees; the reaction cup body is provided with the liquid inlet and the liquid outlet, the liquid inlet is located in the position, far away from the center shaft, of the conical surface of the cup bottom of the reaction cup body, after liquid is pumped away, no large bulk liquid is formed on the inner wall of the reaction cup, a thin liquid film is formed, and bulk water drop-shaped liquid residues cannot be observed. Therefore, after each emptying operation of the reaction cup, the liquid residual quantity difference of the reaction cup is reduced, the sample concentration difference is fu