Patent ID: 8771517

Claim:
An ion chromatography method comprising: (a) flowing an aqueous liquid stream from an aqueous liquid source through a sample loop containing a liquid sample including ions of interest, (b) flowing the step (a) effluent through concentrator ion exchange medium in an ion concentrator to retain said sample ions, (c) flowing an eluent through said concentrator ion exchange medium to remove said retained sample ions in a concentrator effluent, (d) flowing the step (c) effluent through ion separation medium in an ion separator to separate said sample ions and form an ion separation effluent, (e) flowing the step (d) effluent past a detector to detect the separated sample ions, the flow in steps (a) through (d) being performed under pressure applied by a single pump, and (f) flowing an aqueous liquid stream from said aqueous liquid source through an eluent generator to generate the eluent of step (c) under pressure applied by said single pump.