C18UL
C18UL HPLC columns are the Vintage Chrom Bond C18 UL variant of the octadecyl reversed-phase family, listed as a separate section so that analysts can locate this specific phase quickly. They serve the same general-purpose role as standard C18 columns.
There are 94 listings, all on 80 Å silica, in 125 × 4 mm and 125 × 4.6 mm analytical formats with 3 µm, 5 µm and 10 µm particles. The single pore size keeps selection simple: the decision comes down to column bore and particle size.
A 4.6 mm bore matches most published methods and standard HPLC flow rates; 4 mm trims solvent use. Go to 3 µm for resolution, 5 µm for everyday robustness and 10 µm when loading or pressure is the priority. If you need a C18 UL column in a length or bore not shown, tell us and we will quote it.
