In beverage-grade carbon dioxide and other cryogenic gases, trace contamination by non-volatile compounds (NVOCs)—such as glycols, oils, and heavy hydrocarbons—can compromise product quality and safety. Conventional gas chromatographic sampling fails in these applications because vaporizing the CO₂ matrix at high temperatures causes unpredictable flashing, resulting in non-repeatable data.

The Wasson-ECE NVOC addresses this challenge by selectively vaporizing low-boiling matrices (like CO₂) while concentrating high-boiling contaminants. This enables accurate and reproducible quantification of trace NVOCs using standard GC or GC/MS systems.

Wasson-ECE Instrumentation has over 35 years of expertise in gas chromatography and process analytical systems. The NVOC was engineered from decades of experience in gas-phase and cryogenic analysis for the beverage, petrochemical, and environmental industries, ensuring robust design, reliability, and analytical integrity.

1. Selective Vaporization Technology: The NVOC performs vaporization inside a capillary column section, where CO₂ vaporizes and vents while non-volatile residues are trapped. A solvent flush then dissolves and concentrates the residue for syringe injection into the GC—enabling direct analysis of compounds previously undetectable via gas-phase injection.
2. Precise Flow and Mass Control: A digital flow totalizer measures total vaporized CO₂ mass and volume, ensuring accurate concentration calculations and repeatable sampling.
3. Fully Integrated Analytical Workflow: The NVOC interfaces directly with standard gas chromatographs, providing a complete workflow—from sample introduction to quantification—without specialized hardware or modification to the GC system.