Shim-pack Velox C18 is a traditional end-capped C18-bonded phase which offers the highest hydrophobic retention of any Shim-pack Velox phases and is applicable to a wide range of applications such as pharmaceutical, food, environmental and clinical and neutrals at moderately low and mid-range pH. General purpose column for reversed-phase chromatography Highest hydrophobic retention among Shim-pack Velox series Compatible with moderately acidic to neutral mobile phases (pH 2-8)