Phase: Cyanopropylphenyl Polysiloxaner- US EPA 624 optimized columnr- Designed for volatiles analysisr- Ideal for EPA624, SW-846 and 8240/8260 methodsr- Ideal for USP G43 methodrApplication areas: EPA method 624, drinking water volatiles, chlorinated hydrocarbons, solvents.rSuitable replacement for: DB-624, OV-624, AT-624, HP-VOC, CP-Select624CB, 007-624, Rtx-Volatiles, VOCOL, ZB-624.