Mid-polarity: Crossbond phase (similar to 35% phenyl methyl polysiloxane) Very low-bleed phase for GCMS analysis Special selectivity and excellent inertness for substituted polar compounds, such as drugs, pesticides, herbicides, PCBs, phenols, etc. Provides superior separation for cannabinoids Similar phases: Rxi-35Sil MS, DB-35ms, DB-35ms UI, VF-35ms, BPX-35, ZB-MR2