Rxi® fused silica capillary GC columns are designed specifically for exceptional inertness, ultra-low bleed, and reproducible retention and selectivity.

• Special selectivity and excellent inertness for substituted polar compounds, such as drugs, pesticides, herbicides, PCBs, phenols, etc.
• Provides superior separation for cannabinoids
• Very low-bleed phase for GC-MS analysis
• Extended temperature range: 50 up to 360 °C
• Reproducible performance, column after column
• Mid-polarity Crossbond® phase

This combination of column characteristics assures Rxi® columns will have long lifetimes.

The higher aromatic content of the Rxi®-35Sil MS column allows for superior separation of cannabinoids over traditional 5-type columns. Baseline separation can be achieved for a comprehensive list of cannabinoids by using a cost-effective 15 m column and readily available hydrogen carrier gas. The arylene content of the Rxi®-35Sil MS stationary phase ensures long column lifetime at the high elution temperatures required for cannabinoids analysis.

Restek has also developed a stable, reproducible manufacturing process, so that Rxi® columns will meet your needs every time you install a new column.