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column	GPA 2261 3-column set (13993-U)
oven	100 °C
carrier gas	helium, 30 mL/min
injection	0.5 mLsample loop

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Analysis Note	Packed columns continue to be used in multi-column, multi-valve configurations for the determination of BTU content in natural gas and natural gas liquids as described in Gas Processors Association (GPA) Methods 2261 and 2177, plus American Society for Testing and Materials (ASTM) Test Method 2597. This chromatogram is of GPA Method 2261, and uses three packed columns in a multi-valve configuration. Supelco is the world leader in packed GC column technology, with an extensive library of phases and supports.
Categories	Analytical Chromatography, GC Applications, Volatiles, Gases, Hydrocarbons
Featured Industry	Petroleum
Other Notes	Complementary products: \nSyringes \nVials \nGas Purification and Gas Management \nInlet Liners, Glass Wool, and Specialized Hand Tools \nSepta and Specialized Hand Tools \nColumn Ferrules, Nuts, and Specialized Hand Tools
suitability	application for GC

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