Polar phase: Crossbond 50% cyanopropylmethyl / 50% phenylmethyl polysiloxane General-purpose columns for FAMEs, carbohydrates, sterols, flavor compounds Equivalent to USP G7 and G19 phases Similar phases: Rtx-225, DB-225, DB-225MS, CP-Sil 43 CB, SPB-225, BP-225, 007-225, AT-225t