Proficiency testing sample for detection of textile dyes capable of decomposing to generate 3,3'-dimethylbenzidine and preparation method

The invention discloses a proficiency testing sample for detection of textile dyes capable of decomposing to generate 3,3'-dimethylbenzidine and a preparation method. The proficiency testing sample is prepared by directly dying the dye Red 2 to cambrayon by a dyeing process. The proficiency testing sample can be stored and transported at normal temperature; its homogeneity and stability meets requirements of Guidance on Evaluating the Homogeneity and Stability of Samples Used for Proficiency Testing CNAS-GL03. 本发明公开了种用于纺织品中可分解3,3'-二甲基联苯胺染料检测的能力验证样品及制备方法。该能力验证样品是采用染色工艺将直接红2染料染到棉坯布上制成的。本发明的能力验证样品可常温储存、运输，均匀性和稳定性达到CNAS-GL03《能力验证样品均匀性和稳定性评价指南》的要求。