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Restek GCxGC Column Combination Guide

Restek GCxGC Column Combination Guide




To achieve ideal results in a GCxGC analysis, it is imperative that your primary and secondary columns feature orthogonal phases capable of producing differing separations. Use the chart below to find the perfect combination of Restek columns to maximize the effectiveness of your GCxGC system.

Application Area
Primary Column Secondary Column
Phase Selectivity Phase Selectivity
Petrochemical Rxi-1ms Non-polar Rxi-17Sil MS Mid-polar, aromatic selective
Petrochemical Rxi-5Sil MS Non-polar Rxi-17Sil MS Mid-polar, aromatic selective
PAHs, environmental Rxi-17Sil MS Mid-polar, aromatic selective Rxi-1ms Non-polar
PAHs, environmental Rxi-17Sil MS Mid-polar, aromatic selective Rxi-5Sil MS Non-polar
PCBs, PBDEs, PAHs, environmental Rxi-XLB Non-polar Rxi-17Sil MS Mid-polar, aromatic selective
Mono-ortho, coplanar PCBs Rxi-1ms Non-polar Rxi-XLB Planar selective
Mono-ortho, coplanar PCBs Rxi-5Sil MS Non-polar Rxi-XLB Planar selective
Pesticides, nitroaromatics, halogenated compounds Rxi-1ms Non-polar Rtx-200 Mid-polar, electronegative selectivity
Pesticides, nitroaromatics, halogenated compounds Rxi-5Sil MS Non-polar Rtx-200 Mid-polar, electronegative selectivity
Pesticides, nitroaromatics, halogenated compounds Rxi-XLB Non-polar Rtx-200 Mid-polar, electronegative selectivity
Flavors, fragrances Rxi-1ms Non-polar Stabilwax Polar
Flavors, fragrances Rxi-5Sil MS Non-polar Stabilwax Polar
Flavors, fragrances Stabilwax Polar Rxi-1ms Non-polar
Flavors, fragrances Stabilwax Polar Rxi-5Sil MS Non-polar

To order Restek GCxGC columns and accessories or to get additional assistance in choosing a column pair, visit www.restek.com/gcxgc.