ISO 6145-5:2009是一系列国际标准之一，涉及用于制备校准气体混合物的各种动态体积技术。本部分规定了使用单组分或多组合（气体分配器）的毛细管校准装置从纯气体或气体混合物连续生产校准气体混合物的方法。 单个毛细管系统可用于提供气体混合物，其中次要组分在10-8至0.5的体积分数范围内。 该技术的相对扩大的不确定度相对小于±2％（k = 2）。该应用用于工业气体混合面板，用于生产特定的气体环境。 气体分配器可用于将由气体或气体混合物制备的气体混合物分配成受控的体积比例。这些装置能够在相对重复性优于0.5％的初级气体浓度的体积分数范围为0,000至0.9的范围内稀释。 气体分离器产生的气体混合物的可追溯性是通过将混合物与国家或国际气体标准相关的气体混合物进行比较来实现的。附件A列举了一个例子

ISO 6145-5:2009 is one of a series of International Standards dealing with the various dynamic volumetric techniques used for the preparation of calibration gas mixtures. This part specifies a method for the continuous production of calibration gas mixtures from pure gases or gas mixtures using capillary calibration devices in single or multiple combinations (gas dividers). Single capillary systems can be used to provide gas mixtures where the minor component is in the range of volume fractions from 10-8 to 0,5. The relative expanded uncertainty of this technique is less than ±2 % (k = 2) relative. This application is used in industrial gas mixing panels for the production of specific gas atmospheres. Gas dividers can be used to divide gas mixtures prepared from gases or gas mixtures into controlled proportions by volume. These devices are capable of dilutions in the range of volume fractions from 0,000 5 to 0,9 of the primary gas concentration with a relative repeatability of better than 0,5 %. Traceability of the gas mixtures produced by a gas divider is achieved by comparison of a mixture with gas mixtures related to national or international gas standards. An example is given in Annex A.