Select LocaleRestek GCxGC Column Combination Guide
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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.
GNOT3474-UNV
