球压能力验证样品的均匀性和稳定性检测方法

Test Method on Homogeneity and Stability of Samples Used for Ball Pressure Proficiency Test

能力验证样品的稳定性和均匀性是组织能力验证试验至关重要的一个环节,结合国家认监委(CNCA)2016年组织的球压能力验证项目,以0.3σ准则为主要判定依据,给出了判定能力验证样品均匀性和稳定性的计算过程。为组织开展此类项目的实验室提供了完整的示例。

The stability and homogeneity of proficiency testing samples is a significant link in organizing proficiency testing. Combined with the ball pressure test organized by CNCA in 2016, taking the 0. 3 σ principle as main judgment basis, this paper gives the calculation process for evaluating the homogeneity and stability of samples, so as to provide reference for the relative laboratories to operate this kind of testing project.