Combining state-of-the-art media manufacturing with the industry leading column technology, Viridis Supercritical Fluid Chromatography (SFC) columns bring a new level of reproducibility to the world of laboratory scale purification. Viridis SFC columns are available for analytical & preparative chromatography as Viridis SFC 2-Ethylpyridine columns & Viridis SFC Silica columns. Larger preparative column formats are manufactured using Waters patented Optimum Bed Density (OBD) Technology. 2-Ethylpyridine chemistry is successfully used for a wide range of achiral SFC applications due to its retention, peak shape & selectivity properties. Viridis SFC 2-ethylpyridine columns also provide high reliability & reproducibility & can be used for analytical & preparative applications. Based on Waters long history of chromatographic silica production, the Viridis SFC Silica columns are designed to be highly reproducible & predictable based on tight product specifications & very low metal content.