A CHROMATOGRAPHIC PROCESS UTILIZING A FLUIDISED BED

摘要

A liquid chromatographic process performed at least partly in a fluidised be d contained in a vessel and comprising particles fluidised by an upwardly directed liquid flow, said process comprising (a) a capture step in which on e or more compounds of a sample are captured by the particles and (b) a wash and/or releasing step in which the particles are in form of a fluidised bed through which a liquid flow is passing. The characteristic feature is that t he liquid (liquid 1) used in the wash or the releasing step (step 1) is immediately followed by a liquid (liquid 2, step 2) having a higher density than liquid (1) while maintaining the bed in a fluidised state.