A porous substrate capable of adsorptive filtration of a fluid having a porous self-supporting substrate and one or more porous, adsorptive coatings comprising from about 1 to about 80% of the void volume of the pores of the substrate. The resultant substrate has good convective and diffusive flow and capacity. The substrate may be crosslinked, have one or more capture chemistries attached to it and is useful as a chromatography media for the selective filtration of desired species including biomolecules such as proteins and DNA fragments.

 
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< Peristaltic pump comprising members for locating a tube

< Porous adsorptive or chromatographic media

> Method of forming polysaccharide structures

> Reception head for a filter unit

~ 00232