Conclusion:On-line titroprocessor with screen can directly show titration curve, automatically control titration process, judge titration end point and treat data;

Rice fatty acid automatic titrator determines the titration end-point based on the color change in the titration process, and can get stable and accurate results.

During the production, determination of SO_2 (sulphur dioxide) in dry red wine using potentiometric titration avoids the end-point recognition difficulty compared with using iodometry method.