Preparative Columns: C1 100 Å* are designed for the purification of compounds requiring minimal hydrophobic interaction. Utilizing a methyl (C1) bonded stationary phase with a 100 Å pore size, these columns provide weak retention, making them ideal for fast elution of hydrophobic analytes and large biomolecules. With excellent sample loading capacity, high reproducibility, and compatibility with various mobile phases, they are well-suited for preparative-scale separations in pharmaceutical, biochemical, and clinical research environments.