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Omegawax Capillary GC Column

L × I.D. 30 m × 0.25 mm, df 0.25 μm


Quality Level


fused silica


meets requirements for USP G16


50-280 °C temperature (isothermal or programmed)

Beta value



0.25 μm


gas chromatography (GC): suitable

L × I.D.

30 m × 0.25 mm

matrix active group

Bonded; poly(ethylene glycol) phase


food and beverages

column type

capillary polar

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General description

Application: This column allows highly reproducible analyses of fatty acid methyl esters (FAMEs), specifically the omega 3 and omega 6 fatty acids. It is tested to ensure reproducible FAME equivalent chain length (ECL) values and resolution of key components.
USP Code: This column meets USP G16 requirements.
  • Bonded
  • Poly(ethylene glycol)
Temp. Limits:
  • 50 °C to 280 °C (isothermal or programmed)


Capillary GC column with its coated with Omegawax 250 was used for the absorption of analytes from the aqueous sample in-tube solid-phase microextraction coupled with high-performance liquid chromatography. It may also be used in blood lipid fractions by GC-MS analysis.

Other Notes

We offer a variety of chromatography accessories including analytical syringes

Legal Information

Omegawax is a trademark of Sigma-Aldrich Co. LLC

Certificate of Analysis

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Certificate of Origin

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GC Analysis of a 37-Component FAME Mix on Omegawax®

This technical article will discuss GC Analysis of a 37-Component FAME Mix on Omegawax.

Ionic Liquid GC Column Option for the Analysis of Omega 3 and Omega 6 Fatty Acids

Compared to existing ‘wax’ columns, the SLB-IL60 column offers unique selectivity, some cis/trans resolution, and faster elution for the analysis of omega 3 and omega 6 fatty acid methyl esters.


GC Analysis of Fatty Acids in Walnuts and Peanuts

Determination of the fatty acid composition of nuts using established methods for GC analysis on capillary columns of 3 selectivities: Omegawax, SP-2560, and ionic liquid based SLB-IL111.

GC Analysis of Omega 3 Fatty Acids in Fish Oil Capsules and Farm Raised Salmon

nalysis of the omega 3 fatty acid profiles from fish oil capsules and salmon, highlighted through the use of 2 GC columns of different selectivity for analysts who wish to perform confirmatory analysis.

GC Analysis of Volatiles in Roasted Coffee Beans on Omegawax® after SPME using a 50/30 µm DVB/Carboxen/PDMS Fiber

-Cymene; 2,5-Dimethylpyrrole; Acetoin, ≥96%, FCC, FG; 2,5-Dimethylpyrazine; 2,6-Dimethylpyrazine; 2-Ethylpyrazine, ≥98%, FG; 2,3-Dimethylpyrazine; 4-Heptanone; 3-Ethylpyridine; 2,3,5-Trimethylpyrazine; Furfural; Pyrrole; Furfuryl acetate; Linalool; Linalyl acetate; 5-Methylfurfural; γ-Butyrolactone; 2-Acetyl-1-methylpyrrole; Furfuryl alcohol; 2-Acetylpyrrole; Pyrrole-2-carboxaldehyde

Our team of scientists has experience in all areas of research including Life Science, Material Science, Chemical Synthesis, Chromatography, Analytical and many others.

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