本欧洲标准描述了溶解和准备校准溶液的详细步骤。优先使用的是认证和裁判分析。所有仪器，包括测试实验室使用的软件，都是不同的变化。因此，规定了校准和测量的一般标准。 该方法必须与主要参考材料一起使用，其质量的物质具有显着较小的不确定性，因为测试程序的重复性要求

This European Standard describes detailed steps for dissolution and preparation of calibration solutions. The pre-ferred use is for certification and referee analysis. All instrumentation, including software used in the testing labo-ratories, are different an subject to change. Therefore, general criteria for calibration and measurement are speci-fied. This method has to be used with primary reference materials whose mass of substance have a significant smaller uncertainty as required of the repeatability of the testing procedure.