开展比对试验是验证检测实验室检测能力和提高检测水平的重要手段,中国合格评定国家认可委员会每年都会组织能力验证,但其组织的能力验证不能包括所有产品和项目。因此,由具有相对权威的单位组织全国性的比对试验也成为验证实验室检测能力的重要途径。而在实验室的比对试验中,样品的一致性对于试验结果的准确性至关重要。作为组织者,应确保比对试验过程中出现的不满意结果,不应归咎于样品之间或样品本身的变异性。因此,对于能力验证样品的检测特 Carrying out the comparison test is an important means to verify the testing ability of the testing laboratory and to improve the testing level. The CNAC accreditation committee organizes the proficiency testing every year, but the organization’s proficiency testing can not include all the products and projects. Therefore, it is also an important way to verify the laboratory’s detection ability by organizing the national comparison test by the relative authority unit. In the laboratory comparison test, the consistency of the sample is crucial for the accuracy of the test results. As the organizer, make sure that the unsatisfactory results that appear during the alignment test should not be attributed to the variability between samples or the sample itself. Therefore, the ability to verify the special test samples