Patent ID: 7981284

Claim:
A suppressor for suppressing a background electrical conductivity of an eluate from a separation column of an ion analyzer, comprising: an ion-exchange tube sheet through which an eluate from the separation column flows, the ion-exchange tube sheet being formed by folding or winding one ion-exchange tube more than once in a plane into a sheet form, the ion-exchange tube being constituted by an ion-exchange membrane and having an inner diameter close to that of a tube connected to the separation column; and a container in which the ion-exchange tube sheet is accommodated, the container providing a regenerant flow channel so that a regenerant for regenerating ionic functional groups of the ion-exchange membrane is allowed to flow on both sides of a plane of the ion-exchange tube sheet, wherein the ion-exchange tube sheet is formed only by the ion-exchange tube without a support, wherein the container is constituted by two substrates between which the ion-exchange tube sheet is to be interposed, and wherein both substrates each have one groove provided in each surface, the grooves provided in the two substrates being opposed to each other to form together the regenerant flow channel with the ion-exchange tube sheet being interposed between the grooves.