ASTM International recently launched new a insulating glass units’ standard due to the inert gases that are found in insulating glass units which help make windows more energy efficient. The new standard, ASTM E2649, Test Method for Determining Argon Concentration in Sealed Insulating Glass Units Using Spark Emission Spectroscopy, has been developed by Subcommittee E06.22 as part of ASTM International Committee E06 on Performance of Buildings. 

“The inert gases that are often contained between the panes of glass that make up an insulating glass unit provide better thermal efficiency and reduce heat loss through the window,” says Jeffery Haberer, technical services engineer, Cardinal Glass Industries, and E06.22.05 task group chair. “While the inert gas is only one component of a window that reduces heat loss, if the inert gas leaks out, the total potential to reduce heat loss is compromised.”

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