Proprietary 5% phenyl-type phase • Engineered to be a low-bleed GC-MS column. SH-I-SVOC MS columns keep your instrument online and analyzing semivolatiles (SVOC) samples instead of offline for time-consuming recalibration or column replacement. The best choice for analyzing semivolatiles in environmental samples. Similar phase: DB-UI 8270D, ZB-SemiVolatiles