ISO 6144:2003规定了通过静态容量法制备校准气体混合物的方法，并提供了计算混合物体积组成的程序。它既可用于二元气体混合物（补充气体中含有一种校准成分，通常为氮气或空气），也可用于补充气体中含有一种以上成分的混合物。本国际标准还规定了如何通过严格评估所有涉及的测量不确定度来确定混合物中各校准组分体积分数的扩展不确定度，包括与用于制备气体混合物的仪器相关的测量不确定度，以及与实验程序本身相关的测量不确定度。

ISO 6144:2003 specifies a method for the preparation of calibration gas mixtures by a static volumetric method and provides a procedure for calculating the volumetric composition of the mixture. It can be used either with binary gas mixtures (containing one calibration component in a complementary gas, which is usually nitrogen or air) or with mixtures containing more than one component in the complementary gas. This International Standard also specifies how the expanded uncertainty in the volume fraction of each calibration component in the mixture is determined by a rigorous evaluation of all the measurement uncertainties involved, including those associated with the apparatus used for the preparation of the gas mixture and those associated with the experimental procedure itself.