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Non-Volatile Organics Concentrator (NVOC)

The only cryogenic gas concentrator engineered to recover trace non-volatile compounds from liquid CO₂ with precision and repeatability.

Non-Volatile Organics Concentrator (NVOC) right product image

Need

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.

Qualification

Wasson-ECE Instrumentation has over 40 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.

Topline Specifications

Feature

Specification

Function

Concentration of non-volatile organics from liquid CO₂ for GC injection

Operating Temperature

-18 to 65°C (0 to 149°F)

Max Liquid Sample Pressure

1000 psig

Max Purge Gas Pressure

400 psig

Max Actuation Gas Pressure

65 psig

Power

240 VAC, 50/60 Hz, 10A Max

Control Air Requirements

55 psig dry air or nitrogen

Sample Filtration

Built-in 5 µm NUPRO FW filter (user-replaceable)

Flow Measurement

Digital totalizer (mL or g units)

Differentiation

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.

Precise Flow and Mass Control

A digital flow totalizer measures total vaporized CO₂ mass and volume, ensuring accurate concentration calculations and repeatable sampling.

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.

Downloads

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Corporate Headquarters

Wasson-ECE Instrumentation

101 Rome Ct., Fort Collins, Colorado USA 80524

Phone: +1 (970) 221-9179

Fax: +1 (970) 221-9364

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