Polar phase: Crossbond polyethylene glycol Best polyethylene glycol (PEG) phase for alkenols, glycols, and aldehydes Equivalent to USP G14, G15, G16, G20, G39 phases Similar phases: Rtx-Wax, DB-Wax, CP-Wax 52 CB, BP-20, ZB-Wax, 007-CW, AT-WAXms, EC-WAX