校准气体混合物的一般质量方面和计量可追溯性

[中文适用范围]： 本文件提供了生产明显稳定和可比的校准气体混合物所需的必要质量保证的要求和指南。 它表明这是通过证明校准气体混合物的成分在计量上可追溯到 SI 来实现的。 该文件表明，可以根据具有完全以 SI 单位描述的测量值的方法来制备校准气体混合物。 它描述了验证此类气体混合物的成分在规定的测量不确定度内是否正确的程序。 就如何评估这些程序中的不确定性给出了指导。 本文件还展示了如何通过参考可追踪的标准气体混合物来校准成分未知的校准气体混合物。 本文件涵盖了校准气体混合物生产商使用的质量管理方案的共性和差异，尤其是 ISO/IEC 17025 和 ISO 17034 中描述的质量管理方案。 这些系统导致气体混合物具有不同的特性，本文件解释了这些差异和他们的影响。 根据本文件制备和成分认证的校准气体混合物用于设备校准、方法、测量程序和设备的性能评估。 [外文原描述]： This document provides requirements and guidelines on the necessary quality assurance required to produce calibration gas mixtures that are demonstrably stable and comparable. It shows that this is achieved by demonstrating that the composition of the calibration gas mixture is metrologically traceable to the SI. This document shows that calibration gas mixtures can be prepared according to methods that have measurements that are completely described in SI units. It describes procedures for verifying that the composition of such gas mixtures is correct within the stated measurement uncertainty. Guidance is given as to how to conduct the evaluation of uncertainty in these procedures. This document also shows how a calibration gas mixture with unknown composition can be calibrated by reference to traceable standard gas mixtures. This document covers the commonalities and differences of quality management schemes in use by producers of calibration gas mixtures, most notably those described in ISO/IEC 17025 and ISO 17034. These systems lead to gas mixtures with different characteristics, and this document explains these differences and their implications. Calibration gas mixtures, as prepared and certified for composition in accordance with this document, are used for the calibration of equipment, the performance evaluation of methods, measurement procedures and equipment.