Gas Chromatography Columns

GC Columns

Chrom Tech offers a comprehensive portfolio of gas chromatography (GC) columns engineered to deliver exceptional inertness, low bleed, and highly reproducible peak shapes across routine and advanced analytical workflows. Our selection includes industry-leading Agilent J&W and Restek columns—trusted globally for their consistency, durability, and superior performance in both GC and GC/MS applications.

For laboratories demanding maximum sensitivity, our Ultra Inert and low-bleed GC/MS columns minimize analyte adsorption and background interference, enabling cleaner baselines and more confident quantitation. Chrom Tech also supports a wide range of general-purpose separations with polysiloxane phases suitable for diverse matrices including environmental extracts, VOCs, semi-volatiles, petrochemical samples, and organic compounds.

Every stationary phase is available in multiple lengths, internal diameters, and film thicknesses—allowing you to tailor resolution, analysis speed, retention characteristics, and thermal stability to your exact method requirements. Whether you’re optimizing a new GC method or replacing a legacy column, Chrom Tech provides competitive pricing, fast shipping, and expert chromatographic support to help you make the right selection.

Explore our complete offering of Agilent and Restek GC columns to improve method robustness, increase instrument uptime, and enhance analytical performance across your workflows. For personalized recommendations, contact the Chrom Tech technical team anytime for guidance rooted in real laboratory experience.

Gas Chromatography Column Categories

Explore high-performance Agilent and Restek GC columns engineered for low bleed, high inertness, and reliable separations across routine and advanced applications.

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Key Definitions â–¸
Stationary Phase
The bonded chemical phase inside the GC column that drives analyte separation based on polarity, volatility, and molecular interactions.
Ultra Inert (UI)
Agilent’s premium deactivation technology that minimizes analyte adsorption and reduces bleed, ensuring maximum sensitivity for trace-level GC/MS workflows.
Low Bleed
A performance characteristic indicating minimal background signal, essential for high-sensitivity and mass-spec-compatible analyses.
Film Thickness
The thickness of the stationary phase coating inside the column, influencing retention, selectivity, and sample capacity.
Column Polarity
A key selector for GC columns—non-polar phases provide general separations, while polar phases improve resolution for oxygenated, aromatic, or highly functionalized compounds.
Capillary Column Dimensions
The combination of internal diameter, length, and film thickness that determines efficiency, resolution, and analysis time for a given application.
Frequently Asked Questions â–¸
What factors determine which GC column I should use?
Column selection depends on analyte polarity, volatility, desired resolution, temperature limits, and instrument compatibility. Chrom Tech can help identify the ideal phase and dimensions for your application.
What is the advantage of Ultra Inert or low-bleed GC/MS columns?
These columns minimize adsorption and reduce background noise, which enhances sensitivity in GC/MS workflows—especially for trace-level or reactive analytes.
Do Agilent and Restek columns offer equivalent phases?
Yes. Both manufacturers provide equivalent polysiloxane phases, allowing you to match performance requirements while choosing the brand that aligns with your method, instrument, or regulatory preferences.