GPA 2261为气体处理行业提供了一种使用气相色谱仪（GC）测定天然气和类似气体混合物化学成分的方法。本标准中包含的精度声明基于B部分获得的循环实验室数据的统计分析。本标准由GPA B部分“分析和测试方法”赞助下的许多行业人士共同制定。

GPA 2261 provides the gas processing industry a method for determining the chemical composition of natural gas and similar gaseous mixtures using a Gas Chromatograph (GC).The precision statements contained in this standard are based on the statistical analysis of round-robin laboratory data obtained by Section B.This standard was developed by the cooperative efforts of many individuals from industry under the sponsorship of GPA Section B, Analysis and Test Methods.