CNAL/T0086水溶液pH值测定能力验证分析

2003年5～8月期间，中国实验室国家认可委员会组织了CNAL／T0086水溶液的pH值测定能力验证。本次能力验证由中国实验室国家认可委员会组织，国家标；住物质研究中心负责协调及实施。能力验证的目的是评价各实验室水溶液pH值测定的测试能力和测试水平。对测试结果的统计采用方便并为国际和区域承认的方法——稳健统计法，根据Z比分数评判各实验室的测试结果。

ANALYSIS OF THE pH MEASUREMENT OF SOLUTION PROFICIENCY TESTING PROGRAM ( CNAL/T0086 )

From May to August in 2003, China Nation Accreditation Committee of Laboratory(CNAL) organized the proficiency testing program(CNAL/T0086) for the pH measurement of solution. The proficiency testing(PT) was organized by CNAL and implemented by NRCCRM. The purpose of this PT is to value the ability of pH measurement and the level of test. Robust Statistics, a convenient and international and regionally accepted statistical method, is used for analyzing test results. So Z-scores calculating for each laboratory results are used to estimated those data.