Rt-2560

Restek Rt-2560 GC Columns

Restek Rt-2560 GC columns are highly specialized high-polarity columns designed for detailed separation of complex fatty acid methyl ester (FAME) mixtures, particularly those containing challenging cis/trans and positional isomers. Featuring a cyanopropyl polysiloxane stationary phase engineered for exceptional isomeric resolution, Rt-2560 columns deliver outstanding performance for nutritional labeling, food authenticity testing, lipid characterization, and regulatory compliance workflows.

With column lengths up to 100 meters and extremely high theoretical plate counts, Rt-2560 provides unparalleled resolving power for long-chain and closely eluting FAME isomers—enabling analysts to confidently differentiate compounds such as C18:1, C18:2, and C20:1 isomer clusters. The column’s high-polarity phase ensures strong interactions with unsaturated fatty acids, improving separation efficiency well beyond that of typical 88-type columns.

Rt-2560 exhibits excellent thermal stability, low bleed, and robust inertness to maintain peak integrity during extended isothermal or programmed analyses. These characteristics make it ideal for GC-FID workflows where quantitative accuracy and baseline stability are essential for regulatory and nutritional reporting.

As an authorized distributor of Restek products, Chrom Tech offers Rt-2560 columns for laboratories requiring highly reliable, finely tuned chromatographic performance for advanced lipid and FAME profiling.
Key Definitions ▸
High-Polarity Cyanopropyl Polysiloxane Phase
A highly polar stationary phase that interacts strongly with unsaturated fatty acids, providing exceptional resolution of FAME isomers.
FAME Isomer Separation
The process of resolving cis/trans, positional, and geometric isomers of fatty acid methyl esters— critical for nutritional labeling and food authenticity testing.
High Plate Count
A measure of column efficiency; longer Rt-2560 columns deliver extremely high plate counts, enabling improved resolution of closely eluting isomer clusters.
FAME Profiling for Regulatory Compliance
Analytical workflows used to measure fatty acid composition for nutritional labels, authenticity standards, or industry-specific regulations.
Isothermal and Programmed Operation
The ability of Rt-2560 to maintain stable performance in both steady-temperature and temperature-ramped methods, essential for different FAME separation strategies.
Frequently Asked Questions ▸
What applications are Rt-2560 columns most commonly used for?
Rt-2560 is primarily used for detailed FAME profiling in food, nutrition, lipid research, and authenticity testing, especially where high-resolution isomer separation is required.
Why choose Rt-2560 over CP-Sil 88 or other 88-type columns?
Rt-2560 offers even higher resolving power for complex C18 and C20 FAME isomers, with longer column formats and enhanced selectivity for difficult separations.
Are Rt-2560 columns suitable for GC-MS analysis?
Although primarily used with GC-FID due to FAME workflows, Rt-2560 can be used with GC-MS when low bleed and stable backgrounds are required.
Is column length important for FAME separations?
Yes. Longer Rt-2560 columns (up to 100 m) dramatically increase plate count and are crucial for resolving long-chain and closely eluting FAME isomers.