Preparative Columns: C8 300A* are engineered for high-efficiency purification of large biomolecules in preparative-scale HPLC. Featuring a C8 (octyl) bonded phase and a 300Å pore size, these columns provide excellent accessibility and mass transfer for high-molecular-weight compounds such as proteins, peptides, and oligonucleotides. The moderate hydrophobicity of the C8 phase ensures controlled retention and faster elution, making it ideal for compounds sensitive to strong binding. With high loading capacity, low backpressure, and robust reproducibility, these columns are well-suited for pharmaceutical, biotechnological, and research purification processes.