探讨实验室能力验证中棕刚玉化学分析比对测试存在的问题

Probing into the problems of chemical analysis of brown fused aluminium oxide interlaboratory comparisons in laboratory proficiency testing

实验室能力验证是指通过实验室间的测试比对来评判实验室测试能力的一种技术活动。棕刚玉是磨料行业的主要产品之一,在进行磨料行业实验室能力验证时,棕刚玉的化学分析比对测试是一个必抽考核项目。磨料行业棕刚玉化学分析结果的实验室之间的允许误差要满足国家标准《GB/T3043-2000棕刚玉化学分析方法》的要求,这些要求和能力验证中的评价结论是否总是协调一致的?本文通过一组比对测试数据尝试性地探讨了其中存在的问题,以引起行业技术专家及评审专家对有关问题的注意,进而制订更完善的能力验证计划。

Laboratory proficiency testing is a technical action appraising the testing ability of laboratory by inter laboratory comparisons. Brown fused alumina is one of the major abrasive products . Comparison test of chemical analysis of brown fused alumina is a must check item in laboratory proficiency testing of abrasive trade. The inter laboratory admissible error of chemical analysis results of brown fused alumina must meet the requirements in the standard 《 GB/T3043 - 2000 Abrasive grains and crude - chemical analysis of brown fused aluminium oxide》 in abrasive trade . Are these demands in the standard always concerted to the conclusions of laboratory proficiency testing？ This paper attempted to probe into the problem by a set of comparison testing data,in order to call the experts＇ attention to the problem and then work out more perfect plan for laboratory proficiency testing.