The Ascentis family of columns is the fourth generation of HPLC column technology from Supelco scientists. Ascentis columns are bonded on high purity, 100 Angstrom silica including 3, 5, and 10 micron particle size. Columns are designed for small molecule applications and are scalable from micro columns (1.0 mm I.D.) to preparative dimensions (50 mm I.D.). The family includes C18, C8, Phenyl, Si and embedded polar group phase, RP-Amide. The Ascentis Phenyl provides superior separations in reversed-phase mode including 100% aqueous conditions. It may also be used in HILIC/ANP (aqueous normal phase) mode and shows low UV/MS bleed for gradient applications.. Parameter: =70 °C temp. range. Application(s): HPLC: suitable. 100% Aqueous Compatible. Low UV/MS bleed for gradient applications. ANP/HILIC and reversed-phase. Sigma-Aldrich 581616-U Ascentis Phenyl HPLC Column, 5 µm Particle Size, 4.6mm ID, 15cm Length. Country of Origin : United States. Part Number : 1189M37EA. Pack of : 1.