Symmetry® LC Columns are manufactured using high purity silica and tightly controlled manufacturing processes to ensure that you receive a column that exceeds the standards for HPLC column performance. No other silica-based LC column brand can match the column-to-column and batch-to-batch reproducibility of the Symmetry family. Symmetry Columns are available in column, cartridge, and guard formats to include: Symmetry C18 and C8 chromatography columns that deliver maximum reproducibility SymmetryShield RP18 and RP8 chromatography columns to provide superior peak shape Symmetry300 C18 and C4 chromatography columns, which offer high recoveries of peptides and proteins