DAC stands or dynamic axial compression. It combines the preparative column and packing system together, it is very simple to operate. The column can be used online when it is packed well, don’t need to take the column down. It prevents mechanical degradation of the particles. Bed compression is maintained constant, independent of swelling and shrinking of the bed, if the solvent conditions are such that particle swelling takes place, then the piston automatically let the bed expand to maintain constant compression.
Analytical - Pack DAC columns can be consistently packed with small particulate media (10um and less) to high level of performance: Column efficiencies of up to 50,000 theoretical plates per meter have been reported for columns of 50 and 300 mm internal diameter (i.d.). This requires and even distribution of the liquid flow over the column cross-section. Our engineers have modeled the flow pattern at the column ends designed efficient flow distribution systems for optimum performance. For even better control of chromatographic conditions, DAC columns are delivered with a temperature jacket and/or insulation.
