Low-polarity phase: Crossbondx 5% diphenyl / 95% dimethyl polysiloxane General-purpose columns for drugs, solvent impurities, pesticides, hydrocarbons, PCB congeners (e.g., Aroclor mixes), essential oils, semi-volatiles Equivalent to USP G27 and G36 phases Similar phases: Rtx-5, HP-5, DB-5, CP Sil 8 CB, SPB-5, BP-5, ZB-5, 007-5, AT-5, EC-5