A suppressed ion chromatographic apparatus using a regenerant recycle
loop, comprising (a) an ion separation device, (b) a membrane suppressor,
(c) a detector, (d) a container for regenerant solution, (e) a first
conduit between the ion separation device and the suppressor, (f) a
second conduit between the regenerant solution container and the
suppressor, (g) a third conduit between the suppressor and the regenerant
solution container, and (h) a regenerant solution recycle loop out of
fluid communication with the detector outlet.