Sartorius Stedim Biotech Gmbh

Sartorius Ag

Eberhard Wuenn

Wolfgang Demmer

Daniel Riechers

Andreas Kocourek

Stefan Fischer-Fruehholz

Reinhard Baumfalk

Gerhard Greller

Dietmar Nussbaumer

Thorsten Adams

Julia Lueders

Tobias Schleuss

Dietmar Nusbaumer

The present invention relates to a radiation-resistant microporous membrane having a hydrophobicity gradient, to a method for the preparation thereof, and to the use of the membrane in the sterilizing filtration of gaseous fluids or as a liquid barrier in liquid-containing systems to be vented.

Radiation-resistant microporous membrane having a hydrophobicity gradient

The present invention relates to a new type of fluorescent with the following formula (I), its preparation process, and also an optical pH sensor which comprises this fluorescent dye immobilized on an analyte-permeable carrier. 

Fluorescent dye for pH sensor

The invention relates to a bioreactor for cultivating cells having a filter bag for separating culture fluid and cells, the filter medium of the filter bag having a degree of swelling of less than 1%. The bioreactor according to the invention is characterized by a high durability of the filter bag thereof.

Bioreactor

An optical sensor is provided with reduced sensitivity toward external light influences, fluorophores, and radiation, more particularly gamma radiation. The sensor is suitable for determining at least one parameter in a medium. The sensor has a matrix that contains a fluorescent dye. The matrix is supported by a transparent substrate and has a precious metal layer on the side facing the medium. The precious metal layer provides protection against photobleaching and radiation. The optical sensor is suitable for implementation in containers and laboratory products that are sterilized by gamma radiation, such as disposable bioreactors.

Optical sensor and device therewith, and method for the production thereof

The present invention relates to adsorption membranes comprising microporous polymer membranes in which adsorbent particles are incorporated. Furthermore, the present invention relates to a method of producing the inventive adsorption membranes as well as devices which comprise the inventive adsorption membranes.

Adsorption membranes, method of producing same and equipment, including the adsorption membranes

The present invention relates to adsorption membranes, comprising microporous polymer membranes into which are incorporated porous silicon dioxide particles modified with hydrocarbon ligands having 2 to 24 carbon atoms as adsorbent particles. Furthermore, the present invention relates to a method of producing the inventive adsorption membranes as well as devices which comprise the inventive adsorption membranes.

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Goettingen, Germany

Eberhard Wuenn