Preparative Columns: DIOL 200 Å* are optimized for the purification of medium to large polar compounds, including peptides, oligosaccharides, and other biomolecules. With a diol-bonded stationary phase and a 200 Å pore size, these columns offer enhanced mass transfer, excellent peak shapes, and reduced non-specific interactions. Suitable for normal-phase, reversed-phase, and HILIC chromatography, they provide high loading capacity and consistent performance, making them ideal for preparative-scale separations in pharmaceutical and biotechnological applications.