Shim-pack MAqC-ODS 5 micron, 4.6 x 150mm The MAcC-ODS column is a mixed-mode C18 and cation exchange column. The cation exchange capability increases the retention of basic compounds, and is especially effective for the analysis of water soluble vitamins. The metal content eliminates the need for an ion pair reagent and allows for gradient elution for faster run times and sharper peaks than with a traditional cation exchange column. Column size is 4.6 x 150mm with 5um particle size. Maximum pressure 20 Mpa (2900 psi).