Abstract: Container and method for the mixing of media, in particular as a disposable container, which has at least one closable opening for the introduction and/or removal of the media and has a first sensor for measurement of at least one parameter of the mixture, in which at least one second sensor for measurement of the same parameter is arranged at a distance from the first sensor.

Abstract: The invention relates to a sensor for measuring an oxygen content in a liquid or gaseous sample, comprising a first sensor section (14a) that can be brought into contact with the sample and has a luminescent indicator dye embedded in an oxygen-permeable, first polymer matrix, light guiding means (10) for guiding luminescence excitation light from a light source (31, 32) to the first sensor section (14a), and light guiding means (10) for guiding luminescence emission light from the first sensor section (14a) to a detector (39). The invention is distinguished in that arranged adjacent to the first sensor section (14a) is a second sensor section (14b) that includes the same dye, embedded in an oxygen-impermeable, second polymer matrix.

Abstract: Device for fastening a sensor on containers with a flexible container wall, in particular mixing bags, comprising a sensor support which is fitted with a sensor, bears against an inner wall of the container wall at least with a rear subsurface averted from the sensor, and is guided with a central piece through an opening in the container wall in which the sensor support is fixed on the container wall by a clamping part which can be connected to the central piece, in which the container wall is clamped between the rear subsurface of the sensor support and on a bearing surface, facing an outer wall of the container, of the clamping part, and in which the rear subsurface bears sealingly against the inner wall of the container wall. The sensor support can also have an electronic or optical transmit unit which is connected to the sensor, in which case the transmit unit communicates in a wireless fashion with a receive unit arranged outside the container.

Abstract: 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.

Abstract: A force measuring system with at least two load cells (1, 2), which detect and convert partial forces of the force to be measured into a digital output signal, and with an electronic circuit (5), which calculates a total signal from the output signals of the individual load cells according to the amount of the force to be measured and transmits this total signal to another electronic unit (3) for further processing or data output. The electronic circuit (5) is integrated into at least one load cell (2), whereby the hardware requirements are minimized while detection of the measured values is clearly separated from further processing of the measured values. Advantageously the electronic circuit (5) can be integrated into each load cell (2).

Abstract: A method and device for identifying the type of occupancy of a supporting surface, particularly of a motor vehicle seat (2), with the aid of force sensor-assisted signals. The sensor signals si, which are recorded at predetermined instants ti, or quantities derived therefrom, are continuously stored in a memory (4) in such a manner that, the sensor signals from the recent past, or the quantities derived therefrom are available for analysis at any time, and that the type of occupancy is derived from these stored values using at least two independent calculation methods or using a neural network.

Abstract: A cleaning method for a filter testing device (10) including switching devices (V1–V6), external connections (12, 14, 16, 18, 20) and internal volumes (24, 26, 28, 30, VV1–VV5) that can come into contact with a fluid from a filter device that is to be tested. The cleaning method involves the steps of: selecting one or more internal volumes (24, 26, 28, 30, VV1–VV5) to be cleaned, cleaning the selected internal volumes (24, 26, 28, 30, VV1–VV5) with a cleaning fluid by correspondingly switching the switching devices (V1–V6), and removing the cleaning fluid contained in the internal volumes (24, 26, 28, 30, VV1–VV5) from the internal volumes. Also a computer program product with program parts for implementing the method of the invention or a preferred embodiment thereof, and a filter testing device adapted to be cleaned by the method of the invention.

Abstract: There is disclosed a cellulosic microporous filtration membrane with upper and lower porous protective layers with a porous sponge-type intermediate layer between the two protective layers, wherein the sponge-type structure consists of two isotropic regions having different pore sizes.

Abstract: Membrane holder for membrane adsorber chromatography comprising a housing body (12) with a reception space for at least one layer of adsorber membranes (22) and at least one first housing cap (34) for closing a first reception space opening, which can be fixed to the housing body (12), a liquid stream being introducible via first liquid guide means (36) through the first housing cap (34) and the first reception opening into the reception opening, so that it passes through the adsorber membranes (22) and flows away through a second reception space opening. The first housing cap (34) can be screwed as a first union nut onto the housing body (12) and a first brace element (24), which can be clamped between the first cap (34) and the housing body (12) via a flange (32) extending beyond the first reception space opening, can be fixed leaktightly in a basket-like insert (14) with a liquid-tight wall and a perforated bottom (18), which is used to receive the adsorber membranes (22).

Abstract: A connector system (10) for producing a sterile connection includes a fluid conduit (32), an engagement device (14, 22) designed to engage with a complementary engagement device (16, 24) of a complementary connector (12), a displacement device (26) with a substantially plane displacement surface (30) and a fluid conduit aperture (60) which extends through the displacement surface (30) and is connected to the fluid conduit (32), with the displacement device (26) being designed to displace the connector (12) and the complementary connector (12) relative to one another in a displacement direction (40) after the engagement device (14, 22) has engaged with the complementary engagement device (16, 24), and with the displacement direction (40) being substantially parallel to the displacement surface (30), and a sterile cover device (20, 74) designed to cover at least the fluid conduit aperture (60) in a sterile manner.

Abstract: The invention relates to a filter element (F), particularly for the static or dead-end filtration of fluids, comprising an inner, essentially hollow supporting core (10) and at least one filter layer (12–14) placed thereon. The inner supporting core (10) is formed as a single piece together with a first end plate (20) and with a second end plate (30). The first end plate (20) comprises a connecting piece (22), which is provided therewith as a single piece and which is fluid-connected to the supporting core (10). The second end plate (30) has a seat (32), which is formed therein, is fluid-connected to the supporting core (10) and is adapted to the shape of the connecting piece (22) whereby enabling a connecting piece (22) of a second structurally identical filter element (F) to be at least partially inserted into the seat (32) in order to establish a fluid connection between the supporting cores (10) of the filter elements (F).

Abstract: The invention relates to a device for carrying out integrity tests on filter elements by means of test gases, comprising a device housing (3), with an electronic controller (4), arranged therein for regulation and control of the progress of a test programme for filter elements, a filter housing (6), for housing a filter element (2) under test, a pneumatic unit (5), connected to the controller (4) and the filter housing (6), in particular for the generation and measurement of gas pressures, an electronic memory unit (10), which may be connected to the filter element (2) under test and a communication unit (13?), connected to the controller (4), for the exchange of data between the controller (4) and the electronic memory element (10). The communication unit (13?) is preferably embodied as an antenna (14?) and the electronic memory element (10) as a transponder (11). In addition to the device a method for carrying out integrity tests and a computer programme product are also disclosed.

Abstract: The invention concerns a device and method for monitoring the integrity of filtering installations consisting of a filter housing (1) designed to perform integrity tests and for filtration, equipped with a plurality of filter elements (2, 3) and an electronic testing and monitoring unit (4) designed for monitoring and performing integrity tests, said filter elements (2, 3) having each a storage element and a communicating part (7) being connected to the monitoring and testing unit arranged in the filtering housing, whereon data of said electronic storage elements can be read.

Abstract: A method for testing the integrity of filter elements, in which the convective component of the volumetric gas flow rate is determined from the ratio of the volumetric gas flow rates and the ratio of the solubility or diffusion coefficients of two different gases in the wetting liquid of the filter elements or is determined from the ratio of the volumetric gas flow rates and the ratio of the solubility or diffusion coefficients of a test gas in two different wetting liquids.

Abstract: A bioreactor for culturing microorganisms which has a reactor vessel, a plurality of gas-introduction tubes and a gas-introduction system for introducing gas into a culture medium in the gas-introduction tubes via injectors, wherein the gas-introduction tubes are connected by their respective lower end, in the vertical direction, to the reactor vessel and by their opposite upper end to the upper end of an upright vessel which is likewise connected by its lower end to the reactor vessel, and at the upper end of the upright vessel an expansion vessel is arranged.

Abstract: There is disclosed a filter package comprising a housing and a cover that is adapted to enclose a sterile disposable filter wherein the package cover is penetrable at a point axially aligned with the filter and has at least one pre-formed break line along which the package cover, when subjected to appropriate force, ruptures so as to permit withdrawal of the filter by a syringe coupled thereto.

Abstract: Open-celled membranes from thermoplastic polymers are prepared from foamed polymer melts by extrusion through a die and particulary suitable for filtration.

Abstract: The invention relates to a crossflow-filtration method for beverages, in particular beer, which comprises the following steps: a) the feed liquid is introduced into a filter module by means of a tangential flow through a filter membrane (6) in a first direction, whereby the filtrate flow on the filtrate side (19) of the filter module is maintained within predetermined threshold values; b) the entry pressure is reduced and the filter is backflushed by surges of filtrate initiated by a reversal of the flow direction transversally to the membrane; c) the feed liquid is optionally introduced in an inverse flow direction to that of step a) and the concentrate is evacuated on the non-filtrate (7) side of the module; d) the entry pressure is reduced and the filter is backflushed by surges of filtrate initiated by a reversal of the flow direction transversally to the membrane; e) steps a) to d) are repeated until the filtrate flow lies below the lower predetermined threshold value; f) to k) the filter is emptied by a

Abstract: A force sensor with two force input elements to which a force to be measured and a support force are applied. The two force input elements are substantially rotationally symmetrical and are axially spaced apart, and the force to be measured and the support force are applied in radial directions. A spring element, arranged axially between the two force input elements connects these elements and its load-dependent deformation is converted into an electrical signal. A suppression of transverse forces is achieved in a purely mechanical manner so that the influence of transverse forces on the output signal of the force sensor are negligible. Both force input elements are additionally connected to each other by a guide element which encloses the spring element and which has two parallel guide connectors. The guide element is softer in the direction of the force to be measured than in a direction perpendicular thereto.