The present invention relates to a device for fractionating a suspension sample and to uses of such device. Furthermore, the present invention also relates to a method of fractionating a suspension sample into a liquid phase and a solid phase. The present invention also relates to a device and method for separating a sample comprising a solvent and two or more components having different molecular weights and being dissolved in said solvent, into said two or more components.

An object of the present invention is to provide an adsorbent material having high dispersibility and reversibility. The adsorbent material has a polymer material having a plurality of functional groups ionizable in water and exhibiting no lower limit critical solution temperature, an adsorption site capable of interacting with a target substance, and a carrier.

An object of the present invention is to provide an adsorbent material having high dispersibility and reversibility. The adsorbent material has a polymer material having a plurality of functional groups ionizable in water and exhibiting no lower limit critical solution temperature, an adsorption site capable of interacting with a target substance, and a carrier.