Chromellion Veripore™ C18 HPLC Column. The reference-standard reversed-phase column for everyday separations. Built on fully porous, high-purity Type B silica and bonded with a dense, well-controlled C18 (octadecylsilane) ligand per USP L1, Veripore C18 delivers the retention, selectivity, and peak symmetry your methods were validated on — and keeps delivering it, batch after batch. Available end-capped for maximum hydrolytic stability and reproducibility, or non-endcapped where residual silanol activity is needed for basic analyte retention. Particle sizes from 1.6 µm to 10 µm, pore sizes from 100–120 Å, across the full range of standard analytical, semi-prep, and guard column dimensions — built for pharmacopeial method transfer, routine QC, and multi-instrument standardization.The C18 you already trust — now with a name that stands behind it.