NOVELTY - An ion separating device (10) comprises a conduit (56b) eccentric and parallel to an axis of rotation (12a); an inlet (22); ion ducts; exit ports; and an inductor coil surrounding the conduit and for producing a magnetic field (68) parallel to the axis. The magnetic field exerts a force on ions, where positive ions move radially away from axis of rotation, and enter the first ion duct and exit through the first exit port; and negative ions move radially toward the axis of rotation, and enter second ion duct and exit through the second exit port.    USE - For separating ions from fluid and using the ions to generate a gas such as hydrogen and a precipitate (claimed) during desalination of water.    ADVANTAGE - The reversal of the ion velocity vector causes the forces on the ions to reverse so that positive ions in chamber are move toward the periphery and the negative ions towards the central region. As the fluid stream passes through the various chambers, ions are separated at each stage so that the overall concentration of ions is significantly diminished by the time the stream enters the last chamber. The circulation of the flow in last chamber is again reversed from chamber so negative ions are moved to the center region where they exit through outlet. Positive ions move to the periphery and exit the device through outlet. The stream that exits outlet channel has its ion concentration reduced to the desired level and be suitable for use as irrigation or drinking water. The flow through the conduits has little or no turbulence thus preventing significant mixing between the streams. The device economically and efficiently separates ions from a fluid without the need for high energy expenditure. The device is portable and capable of effective operation under primitive conditions as would be encountered in the aftermath of a disaster.    DETAILED DESCRIPTION - A device (10) for separating ions from a fluid, comprises an elongated conduit (56b) oriented substantially parallel to and positioned eccentric to an axis of rotation (12a); an inlet (22) positioned at one end of the conduit; a first ion duct positioned at an opposite end of the conduit and in fluid communication with the conduit; a first exit port in fluid communication with the first ion duct; a second ion duct positioned at the opposite end of conduit and in fluid communication with the conduit, and is being positioned closer to the axis of rotation than the first ion duct; a second exit port in fluid communication with second ion duct; and an inductor coil surrounding the conduit and for producing a magnetic field (68) substantially parallel to the axis of rotation when an electrical current flows through the coil, where one of the coil and conduit being rotatable about axis of rotation. The fluid containing ions flows through the conduit to the outlets, and magnetic field exerts a force on ions as they flow through the conduit. Positive ions move radially away from axis of rotation, and enter the first ion duct and exit through the first exit port; and negative ions move radially toward the axis of rotation, and enter second ion duct and exit through the second exit port. INDEPENDENT CLAIMS are included for the following:    (1) separating ions within a fluid, involves establishing a magnetic field along an axis; creating a flow of fluid in a stream passing through magnetic field, where stream is positioned eccentric to and oriented parallel to axis; and rotating at least one of stream and magnetic field about axis, where ions within fluid experience a force moving the ions toward or away from axis depending upon the polarity of the ion's electrical charge;    (2) generating hydrogen gas from an aqueous solution comprising sodium and chlorine ions, involving establishing a magnetic field along an axis; creating a flow of solution in a stream passing through the magnetic field; rotating stream and magnetic field about the axis so that sodium ions and chlorine ions experience a force; conducting sodium ion and water stream into a first chamber; conducting chlorine ion and water stream into a second chamber; and electrically connecting sodium ion and water stream in first chamber with chlorine ion and water stream in second chamber; and    (3) generating a precipitate from a liquid solution comprising first and second ions of opposite polarity, involving establishing a magnetic field along an axis; creating a flow of solution in a stream passing through magnetic field; rotating at least one of stream and magnetic field; conducting second stream into a second chamber; and electrically connecting the first stream in first chamber with the second stream in second chamber; and where a chemical reaction occurs in chambers causing a precipitate.    DESCRIPTION OF DRAWING(S) - The figure shows an exploded perspective view of the device for ion separation.    ion separating device (10)    axis of rotation (12a)    inlet (22)    conduit (56b, 58b, 60b, 62b)    magnetic field. (68)