Avantor ACE Excel UHPLC and HPLC columns are manufactured with 100 Ultra-Inert Base Deactivated Silica specifically designed for your HPLC method development needs - Note SuperC18 is 95 . Avantor ACE HPLC columns are available in a wide range of bonded phases (i.e. C18, C18-AR, C18-PFP, C18-Amide, CN-ES, SuperC18, NH2, C8, C4, Phenyl, AQ, CN and Sil). Avantor ACE Excel UHPLC and HPLC columns are avaialble in 1.7, 2, 3, and 5 m particle sizes in all analytical column sizes. All Avantor ACE Excel columns are known for their excellent peak shape and batch to batch reproducibility. Columns are packed in 1000 bar UHPLC hardware. Note: Avantor ACE Excel UHPLC guard columns are available for all 1.7 and 2 m particle sizes across all 2.1 mm 4.6 mm column ID - Note: H0011 connects directly to the analytical column - Guard column cartridges are available in 3-packs. For 3 and 5 m Excel columns use same guard systems used for Avantor ACE HPLC analytical columns.