Rtx®-2330 is one of the most polar capillary column stationary phases, and is good for general-purpose applications such as cis/trans FAMEs and dioxin isomers.

• General-purpose columns for cis/trans FAMEs and dioxin isomers
• Temperature range: 0 to 275 °C
• Equivalent to USP G8 and G48 phase
• Highly polar phase; biscyanopropyl cyanopropylphenyl polysiloxane

Cyano groups on both sides of the polymer backbone give the phase a strong dipole moment and high selectivity for cis/trans compounds or compounds with conjugated double bonds. Highly polar columns typically exhibit poor column efficiencies, high bleed, and short column lifetime when thermally cycled. To overcome some of these problems, we developed a surface treatment that is more compatible with the Rtx®-2330 phase. In addition, improved polymer produces columns with better column efficiency and lower bleed.