High performance capillary columns for gas chromatography (GC), 5 % phenyl – 95 % methylpolysiloxane, nonpolar – low polar GC phase, meets USP G27|G36. Similar phases: SE-54, SE-52, HP-5, SPB-5, CP-Sil 8, Rtx-5, 007-5, BP5, MDN-5, AT-5, ZB-5.