Suppression device for ion chromatograph

The suppressor device for the ion chromatograph is arranged between a separation column and a detector of the ion chromatograph. The electrodialysis suppressor includes a first flow path to which the eluent from the separation column is supplied, a second flow path to which the regenerated liquid is supplied, an ion exchange membrane provided between the first flow path and the second flow path, and an electrode to which a voltage is applied. A power supply circuit for applying a voltage to the electrodes is turned off without supplying an eluent to the first flow path of the electrodialysis suppressor. 离子色谱仪用抑制器装置设置于离子色谱仪的分离柱与检测器之间。电渗析式抑制器包括被供给来自分离柱的洗脱液的第一流路、被供给再生液的第二流路、设置于第一流路与第二流路之间的离子交换膜及被施加电压的电极。对电极施加电压的电源电路在不向所述电渗析式抑制器的第一流路供给洗脱液的情况下断开。