Abstract: The present invention relates to an apparatus for an extracorporeal blood treatment having an extracorporeal blood circuit in which a dialyzer is arranged and having a dialyzate circuit, wherein the blood circuit is in fluid communication with a first chamber and the dialyzate circuit is in fluid communication with a second chamber of the dialyzer, and wherein the two chambers are separated from one another by a semipermeable membrane, with a dialyzate pump for a conveying of the dialysis solution being present in the dialyzate circuit, wherein the apparatus has a control unit that is configured to operate the apparatus in a first phase and in a second phase following the first phase, wherein the dialyzate pump is operated with a smaller flow rate in the first phase than in the second phase and/or wherein the dialyzate pump conveys a dialysis solution in the first phase that is of a higher concentration with respect to at least one component than in the second phase.

Abstract: The invention relates to a method for the processing of protein-containing suspensions or solutions, for example for concentrating or purifying the protein-containing particles or dissolved protein-containing substance contained in the suspensions or solutions, wherein the protein-containing suspensions or solutions are filtered by means of a filter module and the protein-containing particles or dissolved protein-containing substance retained in the filter module are conveyed out of the filter module by means of a backwashing fluid.

Abstract: The invention relates to a dialysis machine comprising an apparatus for the treating of fluids, in particular for the treating of water for the dialysis, wherein the apparatus comprises one or more hollow fiber membrane filters, fluid lines, one or more sampling points and valve connections, wherein the apparatus is configured such that contaminants can concentrate in a first hollow fiber membrane filter and conclusions can be drawn as to the contamination of the provided fluid, in particular water, from an analysis value determined from samples of the concentrated contaminants. The invention further relates to a method for monitoring the apparatus for treating fluids, in particular water, for contamination.

Abstract: The invention relates to a method for the processing of protein-containing suspensions or solutions, for example for concentrating or purifying the protein-containing particles or dissolved protein-containing substance contained in the suspensions or solutions, wherein the protein-containing suspensions or solutions are filtered by means of a filter module and the protein-containing particles or dissolved protein-containing substance retained in the filter module are conveyed out of the filter module by means of a backwashing fluid.