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Learn how headspace sampling works for GC and GC/MS analysis of volatile compounds. Find out the benefits, key parts, and important factors of headspace sampling for different sample types and matrices.
Agilent offers headspace vials and caps in various sizes, styles, and materials for headspace gas chromatography analysis. Learn how to choose the best headspace vial for your application and find the right headspace vial selector tool.
Learn how to calculate the headspace volume for liquids in glass bottles to avoid overpressure and bottle bursting. See examples of water, alcohol and sugar solutions and their effects on the pressure increase.
Ullage or headspace is the unfilled space in a container, particularly with a liquid.
Headspace gas chromatography uses headspace gas—from the top or "head" of a sealed container containing a liquid or solid brought to equilibrium —injected directly onto a gas chromatographic column for separation and analysis.
The 7697A Headspace Sampler introduces volatile compounds into the GC or GC/MS from virtually any sample matrix. Automatic leak check, priority sample positions, and barometric pressure compensation improve uptime, efficiency, and performance.
Inert gas is used to evacuate air from the bottle and/or the headspace above the wine. Nitrogen and carbon dioxide are the gases of choice, as argon has a tendency to increase pressure in the bottle when the wine temperature increases.
