Abstract: The present invention provides a membrane comprising (a) polymer solids comprising 60 wt. % or more of a fully synthetic organic polymer and optionally about 40 wt. % or less of a polymer of natural origin and (b) a cellulose compound which allows for the detection of a biological molecule of interest, wherein the cellulose compound is uniformly distributed throughout the surface of the membrane. The present invention also provides methods of preparing and using such membranes.

Abstract: A process for the immobilization of a linear polymer, in particular a polyionenes, which is soluble in an aqueous solvent, on a chemically inert carrier material and a matrix having an antimicrobial effect are provided, which are suitable for, in particularly intracorporeally applied, medical appliances and in the form of microporous membranes as filters for water purification or, in the form of beads, as a surface disinfectant. The process is characterized in that the two terminal reactive groups of the linear polymer are reacted with an excess of an alpha, omega-bifunctional compound, the reaction product obtained is dissolved in a hydrophilic solvent and applied at least once to the carrier material and then cross-linked with a cross-linking agent dissolved in a hydrophobic solvent which is chemically inert to the cross-linking agent and the carrier material.

Abstract: There is disclosed a filtration unit for the selective separation of substances from fluids by membrane adsorbers, comprising a plurality of filtration chambers arranged in parallel and using membrane adsorber packs having a variable number of porous laminar sections, and wherein at each membrane adsorber pack, the same pressure drop is maintained between feed and permeate.

Abstract: A column for removing poisons and/or other undesired substances from a liquid mixture. The column has a mixture of inactive filler particles and active granules positioned therein, with said filler particles being substantially larger than said active granules, (which are selected from adsorbing material and ion-exchanging material). The filler particles are in fixed contact relationship with each other and the active granules completely fill the spaces between the filler particles.