Abstract: The invention relates to a method for processing a liquid sample situated in a receptacle, wherein an attachment device is attached to the receptacle such that at least one fluid line protrudes into the liquid sample and a fluid is directly dispensed into the liquid sample through the fluid line and/or a portion of the liquid sample is aspirated into the fluid line.

Abstract: A microfluidic device for isolation objects from a liquid suspension comprises at least one fluid inlet and at least one fluid outlet, at least one fluid channel fluidically connecting the at least one fluid inlet to the at least one fluid outlet, a plurality of passive hydrodynamic trapping sites arranged along the at least one fluid channel, each trapping site configured to trap a defined number of objects from a liquid suspension flowing along the at least one fluid channel, and a plurality of nozzle channels, wherein each nozzle channel is in fluidic communication with one of the trapping sites and fluidically connects this trapping site with an associated nozzle orifice. A force may be applied concurrently to the trapped objects and the liquid columns in the nozzle channels so that a liquid aliquot containing the defined number of objects is ejected from each nozzle orifice.

Abstract: A method and a kit are for measuring parameters of an analyte using bi-component detection methods. The method includes measurements of dilutions of the analyte with an extended measurable concentration range of measurements. The determination of dissociation constants of components of bi-component systems is made using the measurements of dilutions of the analyte. Quantitation can be carried out in a highly parallel manner.

Abstract: The invention relates to a device for processing a liquid sample, comprising a carrier that has at least one well for receiving the liquid sample, a processing unit for carrying out at least one processing step, and an actuating apparatus, which has an electrical control or regulating unit for controlling or regulating the processing step carried out by means of the processing unit, wherein the actuating apparatus, in particular the control or regulating unit, is mounted on the processing unit. The device is characterized in that the processing unit is mounted on the carrier.

Abstract: The invention relates to a method for processing a liquid sample situated in a receptacle, wherein an attachment device is attached to the receptacle such that at least one fluid line protrudes into the liquid sample and a fluid is directly dispensed into the liquid sample through the fluid line and/or a portion of the liquid sample is aspirated into the fluid line.

Abstract: A dispensing assembly comprising a cartridge holder is presented. The cartridge holder can receive a cartridge for dispensing a fluid. The cartridge can comprise a reservoir for receiving the fluid. The reservoir can comprise an outlet. The reservoir can have an adjustable volume for forcing the fluid through the outlet. The cartridge can further comprise a nozzle for dispensing the fluid. The nozzle can be connected to the outlet. The dispensing assembly can further comprise an actuator for actuating the adjustable volume. The dispensing assembly can further comprise an impulse generator for imparting an impulse to the nozzle. The impulse generator can comprise an actor for contacting the nozzle. The dispenser assembly can further comprise a controller for controlling the actor and the impulse generator.

Abstract: An ozone generator of a gas blow-through type, especially to produce a gas mixture of ozone/air or ozone/oxygen. An ozone producing structural unit in the path of the blown air or oxygen is used as ozone source. The ozone producing structural unit is operated on the principle of alternating current auxiliary electrode cold arc discharge with its capacity increased by limited arc discharge, with an alternating voltage voltage source. This solution does not result in high-temperature arc discharges, thus the fire hazard may be eliminated, and at the same time the device is capable of producing extremely large quantities of ozone. The ozone producing structural unit of the ozone generator is placed in one or more insulating housings/air ducts, placed in a direction parallel to or coaxial to the air blowing direction. Further details of the apparatus are disclosed herein.

Abstract: A valve for dispensing a fluid comprising a dry portion and a wet portion is presented. Only the wet portion is contacted by the fluid. The wet portion comprises a fluid dispenser unit having a inlet opening, a capillary nozzle providing a fluid outlet, a cavity, the capillary nozzle having an end within the cavity, and a plunger. The plunger moves within the cavity into an opening position allowing an inflow of the fluid through the inlet opening through the cavity and an outflow of the fluid through the capillary nozzle. The plunger has a sealing surface directed towards the end of the capillary nozzle. The plunger moves into a closing position for sealing the end of the capillary nozzle with the sealing surface. The dry portion comprises a closing component for exercising a magnetic closing force onto the plunger for attracting the plunger into the closing position.

Abstract: A cartridge for dispensing a fluid is presented. The cartridge comprises a reservoir chamber for receiving the fluid and for receiving a ventilation gas. The reservoir chamber comprises an inlet for receiving the ventilation gas and an outlet for dispensing the fluid. At least a portion of the reservoir chamber is filled with the ventilation gas when in an operating position. The inlet is located in the portion being filled with the ventilation gas. The fluid comprises a reagent. The cartridge further comprises a baffle for restricting gas diffusion through the inlet. The reservoir chamber receives the ventilation gas via the baffle. The inlet is maintains a constant gas pressure within the portion of the reservoir chamber that is being filled with the ventilation gas.

Abstract: A dispenser for dispensing a fluid is presented. The dispenser comprises a compressible elastomeric fluid conduit having a first end and a second end for flowing the fluid from the first end to the second end, a first check valve and a second check valve distanced in the conduit for forming a fluid chamber, and an actor for compressing the fluid chamber for dispensing a portion of the fluid. At least the second check valve is a duckbill valve. The second check valve is located at the second end of the conduit. The second check valve has sealing lips that extend beyond the second end of the conduit.

Abstract: A device for dispensing or receiving a liquid volume includes a liquid reservoir having an outlet, a pressure generator which provides a compressible enclosed gas volume of a constant amount of substance with a pressure, wherein the gas volume is in direct or indirect fluidic contact with the liquid in the liquid reservoir, a dosing device coupled to the outlet of the liquid reservoir and operable in order to enable the liquid to pass the outlet, a pressure sensor arranged to measure a current pressure in the gas volume and to output an output signal indicating the current pressure in the gas volume and a controller coupled to the pressure generator, the dosing device and the pressure sensor.

Abstract: A cartridge for dispensing a fluid is presented. The cartridge comprises a reservoir chamber for receiving the fluid and for receiving a ventilation gas. The reservoir chamber comprises an inlet for receiving the ventilation gas and an outlet for dispensing the fluid. At least a portion of the reservoir chamber is filled with the ventilation gas when in an operating position. The inlet is located in the portion being filled with the ventilation gas. The fluid comprises a reagent. The cartridge further comprises a baffle for restricting gas diffusion through the inlet. The reservoir chamber receives the ventilation gas via the baffle. The inlet is maintains a constant gas pressure within the portion of the reservoir chamber that is being filled with the ventilation gas.

Abstract: A pressure sensor for measuring a fluid pressure of a fluid within a measurement chamber has the measurement chamber having a mechanical deformable wall, a shape of the measurement chamber varying depending on a pressure within the measurement chamber. The pressure sensor further has a measurement electrode, wherein the measurement chamber is arranged relative to the measurement electrode to be arranged within a region of an electrical field originating from the measurement electrode upon application of a potential to the measurement electrode, wherein an influence of a variation of the shape of the measurement chamber on the electrical field can be detected.

Abstract: A dispenser for dispensing a fluid is presented. The dispenser comprises a compressible elastomeric fluid conduit having a first end and a second end for flowing the fluid from the first end to the second end, a first check valve and a second check valve distanced in the conduit for forming a fluid chamber, and an actor for compressing the fluid chamber for dispensing a portion of the fluid. At least the second check valve is a duckbill valve. The second check valve is located at the second end of the conduit. The second check valve has sealing lips that extend beyond the second end of the conduit.

Abstract: A valve for dispensing a fluid comprising a dry portion and a wet portion is presented. Only the wet portion is contacted by the fluid. The wet portion comprises a fluid dispenser unit having a inlet opening, a capillary nozzle providing a fluid outlet, a cavity, the capillary nozzle having an end within the cavity, and a plunger. The plunger moves within the cavity into an opening position allowing an inflow of the fluid through the inlet opening through the cavity and an outflow of the fluid through the capillary nozzle. The plunger has a sealing surface directed towards the end of the capillary nozzle. The plunger moves into a closing position for sealing the end of the capillary nozzle with the sealing surface. The dry portion comprises a closing component for exercising a magnetic closing force onto the plunger for attracting the plunger into the closing position.

Abstract: A dispensing assembly comprising a cartridge holder is presented. The cartridge holder can receive a cartridge for dispensing a fluid. The cartridge can comprise a reservoir for receiving the fluid. The reservoir can comprise an outlet. The reservoir can have an adjustable volume for forcing the fluid through the outlet. The cartridge can further comprise a nozzle for dispensing the fluid. The nozzle can be connected to the outlet. The dispensing assembly can further comprise an actuator for actuating the adjustable volume. The dispensing assembly can further comprise an impulse generator for imparting an impulse to the nozzle. The impulse generator can comprise an actor for contacting the nozzle. The dispenser assembly can further comprise a controller for controlling the actor and the impulse generator.

Abstract: A device for generating a drop of a primary liquid is described, including: a reservoir fillable with the primary liquid, a pressure generation device for generating a hydraulic pressure on the primary liquid, at least one inlet channel for introducing a secondary fluid, and a channel having a flow cross-section transverse to a main flow direction, wherein the flow cross-section includes a main region and at least one sub-region extending from the main region, designed such that the primary liquid can be held in the main region by capillary forces, and the secondary fluid can be held in the sub-region by capillary forces, wherein the reservoir is fluidically connected to a first end of the channel via an output opening, and the at least one inlet channel is also fluidically connected to the channel, and wherein the pressure generation device is implemented to apply a hydraulic pressure to the primary liquid, whereby the same is moved along the channel and output at a second end of the channel as free-flying d

Abstract: An apparatus for dispensing one or more cells or particles confined in a free flying droplet has a droplet generating device configured to eject out of an orifice a free flying droplet of a suspension of cells or particles. The droplet generating device has a branch-less one-way channel having the orifice at one end thereof. A device for detecting information on cells or particles located in an observation volume of the suspension within the branch-less one-way channel is provided. An ejected droplet is directed to a first position or a second position depending on the detected information.

Abstract: A device for dispensing or receiving a liquid volume comprises a liquid reservoir having an outlet, a pressure generation means which is implemented to provide a compressible enclosed gas volume of a constant amount of substance with a pressure, wherein the gas volume is in direct or indirect fluidic contact with the liquid in the liquid reservoir, a dosing means coupled to the outlet of the liquid reservoir and operable in order to enable the liquid to pass the outlet, a pressure sensor for measuring a current pressure in the gas volume and for outputting an output signal indicating the current pressure in the gas volume and a controller coupled to the pressure generation means, the dosing means and the pressure sensor.

Abstract: The invention relates to a method for operating a direct oxidation fuel cell in which the fuel cell is supplied generally with methanol via a transport device for the fuel. The invention likewise relates to a corresponding arrangement comprising a direct oxidation fuel cell, a fuel reservoir and at least one device for transporting the fuel through the fuel cell.