NEUROSYIL SILICA HPLC COLUMNS: 300 Å* are packed with ultra-pure, unbonded silica featuring a large 300 Å pore size, ideal for the separation of high molecular weight compounds such as peptides, proteins, and large natural products. These columns provide excellent surface accessibility, high resolution, and reproducibility in normal-phase chromatography. With robust performance and high loading capacity, they are well-suited for advanced pharmaceutical, biochemical, and preparative-scale applications requiring efficient large molecule separation.