Abstract: The present invention provides an electric device for producing deionized water comprising: desalting chamber (4) defined by at least two ion-exchange membranes (1, 2) and filled with an ion exchanger; first concentration chamber (5a) positioned adjacent to one side of the desalting chamber with one of the ion-exchange membranes therebetween; second concentration chamber (5b) positioned adjacent to the other side of the desalting chamber with another of the ion-exchange membranes therebetween; and a pair of electrode chambers (6a, 6b) with one electrode chamber being disposed at the outer side of first concentration chamber (5a) and the other electrode chamber being disposed at the outer side of second concentration chamber (5b), wherein the electric device for producing deionized water is provided with: main body part (20) formed to include desalting chamber (4), concentration chambers (5a, 5b), and electrode chambers (6a, 6b); a pair of fixing plates (9a, 9b) disposed in such a way that main body part (20)

Abstract: The present invention provides an electric device for producing deionized water comprising: desalting chamber (4) defined by at least two ion-exchange membranes (1, 2) and filled with an ion exchanger; first concentration chamber (5a) positioned adjacent to one side of the desalting chamber with one of the ion-exchange membranes therebetween; second concentration chamber (5b) positioned adjacent to the other side of the desalting chamber with another of the ion-exchange membranes therebetween; and a pair of electrode chambers (6a, 6b) with one electrode chamber being disposed at the outer side of first concentration chamber (5a) and the other electrode chamber being disposed at the outer side of second concentration chamber (5b), wherein the electric device for producing deionized water is provided with: main body part (20) formed to include desalting chamber (4), concentration chambers (5a, 5b), and electrode chambers (6a, 6b); a pair of fixing plates (9a, 9b) disposed in such a way that main body part (20)

Abstract: A chromatographic separator characterized in that two pumps are employed for controlling chromatographic separation that combines a first process for supplying at least one of feed solution and eluent into a circulation system and extracting the same quantity as that of liquid supplied into the circulation system from one position of a packed column where some component is enriched in the circulation system, and a second process for circulating liquid in the system without supplying the feed solution and eluent and extracting the separated component at all. Easy-to-control chromatographic separator, in which a total number of pumps to be used is decreased and high separation performance is attained through a simple structure, can thereby be provided.

Abstract: A chromatographic separator characterized in that two pumps are employed for controlling chromatographic separation that combines a first process for supplying at least one of feed solution and eluent into a circulation system and extracting the same quantity as that of liquid supplied into the circulation system from one position of a packed column where some component is enriched in the circulation system, and a second process for circulating liquid in the system without supplying the feed solution and eluent and extracting the separated component at all. Easy-to-control chromatographic separator, in which a total number of pumps to be used is decreased and high separation performance is attained through a simple structure, can thereby be provided.