Torus and Viridis SFC Column Chiral and Achiral SeparationsWaters offers three unique brands for SFC chromatography. Our newest addition includes Torus Columns in preparative formats due its excellent performance for a wide range of compounds and matrices. This line along with the Viridis lines for achiral SFC applications are available in analytical and preparative particle sizes ranging from 1.7 µm to 5 µm. The preparative format utilizes our patented OBD Technology to ensure ease of scale-up as well as column-to-column consistency. Trefoil Columns, for chiral SFC chromatography, are uniquely designed for the ACQUITY UPC2 System for selectivity and speed in separations as well as reduced method development time.