State-of-the-art Reversed-Phase and HILIC HPLC Columns Waters offers a wide range of analytical and preparative chromatography columns to meet the needs of virtually every application. The Waters Column Advisor recommends the most appropriate column depending on the on the application requirements you need to consider and the column characteristics you are looking for. Separations developed on our analytical columns can be directly scaled up to preparative columns. We supply a wide range of phase chemistries in numerous column dimensions for preparative work to meet your scale-up needs. All chromatography columns meet stringent specifications to ensure excellent performance and column-to-column reproducibility. We also offer a wide range of accessoriesto support these columns.