NEUROSYIL Diol HPLC Columns: 300 Å* are specially designed for the separation of large polar molecules and biomacromolecules such as proteins, glycoproteins, and polysaccharides. Featuring a diol-bonded phase and a wide 300 Å pore size, these columns ensure excellent accessibility, enhanced mass transfer, and reduced secondary interactions. Suitable for use in normal-phase, reversed-phase, and HILIC modes, they provide sharp peak shapes, high reproducibility, and stable performance—ideal for analytical and preparative applications in pharmaceutical and biotechnological research.