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Inverse Gas Chromatography Surface Energy Analyzer - IGC-SEA

Inverse Gas Chromatography Surface Energy Analyzer

The Inverse Gas Chromatography-Surface Energy Analyzer or iGC-SEA continues Surface Measurement Systems' pioneering history with inverse gas chromatography (IGC), which now spans more than fifteen years. The iGC-SEA is a second generation Inverse Gas Chromatograph instrument. It is the world's only commercial instrument based on the ICG principle. The unique SMS injection scheme provides a wide range of injection concentrations with unrivalled accuracy and reproducibility.

The iGC-SEA is based on Inverse Gas Chromatography (IGC) methodology and is a gas phase technique for characterising surface and bulk properties of solid materials. The principles of IGC are very simple, being the reverse of a conventional gas chromatographic (GC) experiment.

A cylindrical column is uniformly packed with the solid material of interest, typically a powder, fibre or film. A pulse of constant concentration of gas is then injected down the column at a fixed carrier gas flow rate, and the time taken for the pulse or concentration front to elute down the column is measured by a detector. A series of IGC measurements with different gas phase probe molecules then allows access to a wide range of phyisco-chemical properties of the solid sample.



• Unrivalled accuracy and repeatability
• Fully automated operation
• Comprehensive data analysis software
• Up to 12 different probe gas molecules
• User friendly wizard based software
• Optional humidity control
• In-Situ sample pre-conditioning
• Wide temperature range
• Column packing accessory


The iGC-SEA provides unique access to the following physico-chemical properties of a wide range of solid materials in a controlled humidity environment:

• Dispersive and polar surface energies
• Heats and entropies of adsorption
• Acid/base interactions
• Phase transitions
• Sorption isotherms
• Permeability, solubility and diffusion
• Micropore and mesopore distributions
• Competetive (Multicomponent) adsorption
• Surface energy heterogeneity mapping

Typical iGC-SEA Applications - iGC-SEA provides access to unique physicochemical information for :

• Pharmaceuticals
• Cosmetics and Personal Care Products
• Food Products and Ingredients
• Minerals and Coals
• Building Materials
• Flavourings and Perfumes
• Natural and Artificial Fibres
• Biopolymers
• Coatings and Thin Films
• Supported Catalysts
• Polymers, Fillers and Composites
• Microporous Materials