The present invention aims at limiting the pressure loss and smoothly discharging water treated by ion exchangers to the outside of the apparatus. Ion exchanging apparatus 1 has outer vessel 3 that has inner space 2; and ion exchanger support 4 that separates at least a part of inner space 2 into upper space 2a and lower space 2b and that can support ion exchangers to be loaded in upper space 2a. At least a part of an upper surface of the ion exchanger support is made from at least one screen which supports the ion exchangers and which has a flow path allowing water treated by the ion exchangers to flow into the lower space 2b.

The present invention aims at limiting the pressure loss and smoothly discharging water treated by ion exchangers to the outside of the apparatus. Ion exchanging apparatus 1 has outer vessel 3 that has inner space 2; and ion exchanger support 4 that separates at least a part of inner space 2 into upper space 2a and lower space 2b and that can support ion exchangers to be loaded in upper space 2a. At least a part of an upper surface of the ion exchanger support is made from at least one screen which supports the ion exchangers and which has a flow path allowing water treated by the ion exchangers to flow into the lower space 2b.

An ion exchanger configured to remove an impurity ion of a coolant for cooling a fuel cell, the ion exchanger includes an inflow portion having an inflow path where the coolant enters, a discharge portion having a discharge path for discharging the coolant, an outer casing having an upstream end where the inflow portion is provided and a downstream end where the discharge portion is provided, an inner casing housed inside the outer casing, an outer path formed between the inner casing and the outer casing to cause the inflow path and the discharge path to communicate with each other, and an inner path that is formed inside the inner casing to cause the inflow path and the discharge path to communicate with each other and is configured to enclose an ion exchange resin capable of removing an impurity ion of the coolant. The inner casing has a through-hole that causes the inner path end the outer path to communicate with each other.

An ion exchanger configured to remove an impurity ion of a coolant for cooling a fuel cell, the ion exchanger includes an inflow portion having an inflow path where the coolant enters, a discharge portion having a discharge path for discharging the coolant, an outer casing having an upstream end where the inflow portion is provided and a downstream end where the discharge portion is provided, an inner casing housed inside the outer casing, an outer path formed between the inner casing and the outer casing to cause the inflow path and the discharge path to communicate with each other, and an inner path that is formed inside the inner casing to cause the inflow path and the discharge path to communicate with each other and is configured to enclose an ion exchange resin capable of removing an impurity ion of the coolant. The inner casing has a through-hole that causes the inner path end the outer path to communicate with each other.

An ion-exchange equipment includes a tank unit formed with a cooling liquid flow-in port and a cooling liquid flow-out port and provided therein with an ion-exchange chamber, and an ion-exchange resin in form of particles filling the ion-exchange chamber of the tank unit. The ion-exchange chamber is provided so as to extend along an axial direction of the tank unit and the ion-exchange chamber has a circular cross section taken perpendicularly to the axial direction of the tank unit, and the cooling liquid flow-in port is formed so as to extend in a tangential direction of the ion-exchange chamber.

An ion-exchange equipment includes a tank unit formed with a cooling liquid flow-in port and a cooling liquid flow-out port and provided therein with an ion-exchange chamber, and an ion-exchange resin in form of particles filling the ion-exchange chamber of the tank unit. The ion-exchange chamber is provided so as to extend along an axial direction of the tank unit and the ion-exchange chamber has a circular cross section taken perpendicularly to the axial direction of the tank unit, and the cooling liquid flow-in port is formed so as to extend in a tangential direction of the ion-exchange chamber.

A fluid treatment apparatus comprising a tank containing a bed of at least one fluid treatment medium, a distributor plate separating the bed from an end portion of the tank, and an inert medium comprising amorphous particles having a harmonic mean diameter from 2.5 to 250 mm and a density from 0.57 to 0.998 cm.sup.3/g. The volume of the end portion containing inert medium is from 25 to 95% of the total volume of the end portion.

A fluid treatment apparatus comprising a tank containing a bed of at least one fluid treatment medium, a distributor plate separating the bed from an end portion of the tank, and an inert medium comprising amorphous particles having a harmonic mean diameter from 2.5 to 250 mm and a density from 0.57 to 0.998 cm.sup.3/g. The volume of the end portion containing inert medium is from 25 to 95% of the total volume of the end portion.

The disclosure relates to a container for a filter cartridge, and a filter set which comprises such a container. The container has a bottom with a drain line connecting a cavity for accommodating the filter cartridge with the outer side of the container, and a side wall. The bottom and the side wall form the cavity. The filter cartridge is filled with a filter material. In order to enable utilisation of both ion exchanger filter cartridges and reverse osmosis filter cartridges, the drain line includes an extension that can receive a throttle valve, e.g. an apertured diaphragm, when using a reverse osmosis filter cartridge and, in addition, includes a ball valve that is closed when the inserted filter cartridge is an ion exchanger filter cartridge, and open otherwise.

A method of making an ion exchange foam is described. The method includes forming an aqueous phase by suspending an ion exchange resin in an aqueous solvent. An organic phase is formed by mixing at least a divinylbenzene, a monomer, and a surfactant. The formed aqueous phase is mixed with the formed organic phase to form an emulsion. The emulsion is polymerized to form the ion exchange foam. The ion exchange foam can be used with a plurality of sample vials in an autosampler.