Preparative Columns: DIOL 100 Å* are high-performance HPLC columns designed for the purification of small to medium-sized polar compounds. Featuring a diol-bonded stationary phase and a 100 Å pore size, these columns provide excellent selectivity, reduced silanol interactions, and sharp peak resolution. Ideal for use in normal-phase, reversed-phase, and HILIC modes, they ensure high sample loading capacity and consistent reproducibility—making them suitable for preparative-scale applications in pharmaceutical, biochemical, and natural product purification workflows.