RTX-2330 氣相柱(高極性固定相；雙氰丙基氰丙基苯基聚硅氧烷)順/反式脂肪酸甲酯、二氧（雜）芑同分異構(gòu)體分析的通用柱。溫度范圍: 0 °C~275 °C。

 等同于USP G8和G48固定相。RTX-2330 氣相柱 固定相是極性*大的毛細(xì)管柱固定相。因為聚合物上接有氰基，RTX-2330 氣相柱 固定相有極強(qiáng)的偶極距，并對順/反異構(gòu)體化合物或共軛雙鍵化合物具有很高的選擇性。但高極性柱在熱循環(huán)時一般熱穩(wěn)定性差、流失嚴(yán)重、壽命較短。為了克服這些缺陷，我們采用一種新的表面處理技術(shù)，使其與Rtx-2330所用的固定相更加相配。而且，我們改良的聚合物提升了柱的效率以及低的流失。因為Rt®-2330固定相不是100%的鍵合相，所以不能用溶劑沖洗。

Rtx-2330 is one of the most polar capillary column stationary phases. 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 lifetimes 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, our improved polymer produces columns with better column efficiency and lower bleed.