ISO/TS 12389:2009描述了通过x射线荧光法对水泥进行化学分析的实验室间测试结果。首先，实验室间测试是根据JIS R 5204:2002在日本和亚洲国家进行的。共有30个实验室，其中16个在日本，14个在日本以外，参与了最初的测试计划。2005年，另有12个欧洲实验室根据JIS R 5204的CEN/TC 51/WG 15/TG 1开发的EN 196-2使用相同材料参与了测试。截至本技术报告发布之日，最新版本（ISO 29581-2）正在分发以供技术咨询。 使用的测试样品是符合EN 197-1的CEM I的波特兰水泥以及波特兰水泥和高炉矿渣的混合物。混合物对应于JIS R 5211和EN 197-1的CEM III/A中规定的B级波特兰高炉矿渣水泥的组成。x射线荧光分析用水泥标准物质（编号601A）作为校准标准品，认证标准物质JCA-CRM-1和JCA-CRM-2作为验证物质。 分析的成分包括SiO2、Al2O3、Fe2O3、CaO、MgO、SO3、Na2O、K2O、TiO2、P2O5、MnO和SrO。还测定了烧失量。 ISO循环赛是在接近最佳条件下进行的方法性能研究，具有明确的校准和测量指南。这有利于产生代表理想情况的“最佳实践”值。然而，ISO 29581-2旨在按照“良好实践”操作的实验室的日常条件下使用。介绍了由大量实验室进行的一些国际循环赛的结果，证明了ISO 29581-2作为比较实验室日常性能的手段的适用性。

ISO/TS 12389:2009 describes the results of the inter-laboratory testing of the chemical analysis of cement by x-ray fluorescence. In the first instance, the inter-laboratory testing was carried out in Japan and Asian countries in accordance with JIS R 5204:2002. A total of 30 laboratories, 16 in Japan and 14 outside Japan, participated in the original testing programme. A further 12 European laboratories participated in tests with the same materials in 2005 in accordance with EN 196-2, a development by CEN/TC 51/WG 15/TG 1 of JIS R 5204. The latest version, developed as ISO 29581-2, is, as of the date of publication of this Technical Report, in the process of being circulated for technical enquiry. The test samples used were Portland cement conforming to CEM I of EN 197-1 and a mixture of Portland cement and blast furnace slag. The mixture corresponded to the composition of Portland blast furnace slag cement, class B, specified in JIS R 5211 and CEM III/A of EN 197-1. Cement reference materials for x-ray fluorescence analysis (No. 601A) are used for the calibration standards, and certified reference materials JCA-CRM-1 and JCA-CRM-2 are used as the validation materials. Constituents analysed include SiO₂, Al₂O₃, Fe₂O₃, CaO, MgO, SO₃, Na₂O, K₂O, TiO₂, P₂O₅, MnO and SrO. The loss on ignition is also determined. The ISO round robin is a method-performance study conducted under close to optimum conditions with clear calibration and measurement guidelines. This is conducive to producing “best practice” values representative of the ideal situation. However, ISO 29581-2 is intended for use under everyday conditions in laboratories that operate to “good practice”. The results are presented for some international round robins carried out by a large number of laboratories demonstrating the suitability of ISO 29581-2 as a means for comparing the everyday performance of laboratories.