Restek
Resource Hub / Technical Literature Library / 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 Nonpolar Rxi-17Sil MS Midpolar, aromatic selective
Petrochemical Rxi-5Sil MS Low polarity Rxi-17Sil MS Midpolar, aromatic selective
PAHs, environmental Rxi-17Sil MS Midpolar, aromatic selective Rxi-1ms Nonpolar
PAHs, environmental Rxi-17Sil MS Midpolar, aromatic selective Rxi-5Sil MS Low polarity
PCBs, PBDEs, PAHs, environmental Rxi-XLB Low polarity, planar selective Rxi-17Sil MS Midpolar, aromatic selective
Mono-ortho, coplanar PCBs Rxi-1ms Nonpolar Rxi-XLB Low polarity, Planar selective
Mono-ortho, coplanar PCBs Rxi-5Sil MS Low polarity Rxi-XLB Low polarity, Planar selective
Pesticides, nitroaromatics, halogenated compounds Rxi-1ms Nonpolar Rtx-200 Midpolar, electronegative selectivity
Pesticides, nitroaromatics, halogenated compounds Rxi-5Sil MS Low polarity Rtx-200 Midpolar, electronegative selectivity
Pesticides, nitroaromatics, halogenated compounds Rxi-XLB Low polarity, planar selective Rtx-200 Midpolar, electronegative selectivity
Flavors, fragrances Rxi-1ms Nonpolar Stabilwax Polar
Flavors, fragrances Rxi-5Sil MS Low polarity Stabilwax Polar
Flavors, fragrances Stabilwax Polar Rxi-1ms Nonpolar
Flavors, fragrances Stabilwax Polar Rxi-5Sil MS Low polarity

 

GNOT3474A-UNV