Product Overview

Water GC-HS (CAS No. 7732-18-5) is water intended for headspace gas-chromatographic workflows where low volatile-organic background is particularly important. In static or dynamic headspace methods, water can serve as a sample diluent, matrix component or blank, while volatile contaminants present in the water can partition into the headspace and generate interfering chromatographic peaks.

The GC-HS grade is intended for headspace sample preparation, aqueous blanks, dilutions and matrix studies involving volatile compounds. Its technical role centres on providing an aqueous medium with controlled volatile background for reproducible headspace equilibration and gas-chromatographic measurement.

Typical Applications

• Preparation of aqueous GC-HS samples.
• Headspace blank and background evaluation.
• Dilution of water-compatible samples before headspace analysis.
• Residual-solvent and volatile-organic method development.
• Matrix-partition and equilibration studies.
• Preparation of aqueous spiking and recovery systems.

Common Synonyms

• Aqua
• Dihydrogen monoxide
• Dihydrogen oxide
• Oxidane

Storage Conditions

Keep tightly closed and protect from volatile organic contamination from laboratory air, containers and dispensing systems. Maintain dedicated clean handling so that headspace background remains as reproducible as practical.