f moving them toward the periphery 26 as a result of the magnetically induced force the negative ions 78 will tend to exit chamber 12 through outlet 28 and the positive ions 76 will tend to exit the chamber through the outlet 56 a 56 b located proximate to the center region 24 the portion of the fluid stream that exits the device through outlet 56 a 56 b thus contains a higher concentration of positive ions this portion may be sent to another ion separation device for further processing the portion of the fluid stream that exits through outlet channel 28 contains a higher concentration of negative ions and enters intermediate chamber 14 through its inlet 30 due to the position and orientation of inlet 30 at the periphery 34 the fluid stream 74 has a counter clockwise flow in chamber 14 the circulation of the flow in all of the chambers is enhanced by orienting the inlets offset from the center regions and giving the peripheries a curved preferably circular shape the reversal of the ion velocity vector causes the forces on the ions to reverse so that positive ions in chamber 14 are moved toward the periphery 34 and negative ions toward the center region 32 a portion of the fluid stream having a higher concentration of negative ions exits the device through outlet 58 a 58 b while another portion of the stream having a higher concentration of positive ions exits chamber 14 through outlet 36 outlet 36 is in fluid communication with inlet 38 of chamber 16 the circulation of the flow is again reversed and moves clockwise in chamber 16 resulting.