Abstract: Fluidized-bed reactor for the gas-phase polymerization of olefins including a gas distribution grid installed in a lower part of the fluidized-bed reactor and a gas recycle line, which is equipped with a compressor and a heat exchanger and which is connected at the upper end with the top of the fluidized-bed reactor, wherein the gas recycle line splits at the lower end in at least two horizontal branches which are connected tangentially with the fluidized-bed reactor below the gas distribution grid and a process for preparing an olefin polymer carried out in the fluidized-bed reactor.

Abstract: The microcapsules and process of making describe a novel core shell microcapsule. The microcapsule incorporates a polysaccharide such as chitosan into the microcapsule wall forming the shell. The microcapsule shell is formed by dissolving chitosan into a material of structure wherein each R is independently selected from hydrogen, C1 to C8 alkyl, or a cyano group; and each y is independently an integer from 1 to 8, and reacting with a multifunctional (meth)acrylate.

Abstract: Plant for the conversion of biogas into a chemical product with a high added value, selected among methanol, dimethyl ether, formaldehyde, acetic acid by a process comprising the following steps: a) reforming by converting methane and carbon dioxide contained in the biogas into syngas, b) synthesis of methanol by using syngas from step a), b?) synthesis of one of the aforesaid chemical products: formaldehyde, dimethyl ether or acetic acid by using methanol from step b) c) optional purification and separation of said chemical product, characterized in that the reaction section in which the steps b) and b?) are carried out or a part of it is replaceable with a further and different whole section or section part, in order to obtain one of the aforesaid chemical products different from the one obtained before said substitution.

Abstract: Methods, systems, compositions, and devices for the manufacturing of high-quality building blocks, such as polynucleotides, are described herein. Processes described herein provide for efficient washing of residual reagents, solvents, or byproducts from previous synthetic steps to allow for the generation of polynucleotides with low error rates. Processes described herein also provide for reduction in deletion rates during chemical nucleic acid synthesis. Further, methods and devices described herein allow for the rapid construction and assembly of large libraries of highly accurate polynucleotides.

Abstract: The invention relates to a fluid-conducting device (10) having a conduit block (12), within which there are formed multiple primary conduits (14) which extend in a primary conduit direction (100) and which are designed to conduct a primary fluid. The fluid-conducting device furthermore has at least one secondary conduit (16), which extends at least partially in a secondary conduit direction (102) extending at least partially perpendicular to the primary conduit direction (100) and which is designed to conduct or to receive a secondary fluid.

Abstract: A DNA complex includes a carrier and DNA immobilized on the carrier. 80% or more by mass of the DNA is single-stranded DNA, the DNA has an average molecular weight of 500,000 or less, and the DNA content is more than 15% by mass and 50% or less by mass of the DNA complex. The carrier contains an inorganic material. The DNA complex has an average particle size of 10 ?m or more.

Abstract: A method of recycling an saturated adsorbent (3) of a filter module (1) of an industrial process plant (15), wherein a first process (17) includes removing the saturated adsorbent (3) from the filter module (1), a fourth process (20) includes washing and reactivating the saturated adsorbent, a fifth process (21) includes drying and packing the reactivated adsorbent in airtight containers, and a seventh process (23) includes replacing the saturated adsorbent by reactivated adsorbent in the filter module (1).

Abstract: The invention provides a composite catalyst containing a first component and a second component. The first component contains a ternary mixed metal oxide. The second component contains a platinum group metal. The composite catalyst is useful for catalyzing the low temperature oxidation of carbon monoxide and hydrocarbons.

Abstract: Provided are catalyst particles for treating vehicle exhaust gas, containing semiconductor nanoparticles supported by noble metals.

Abstract: The present invention relates to a honeycomb catalytic converter, including: a honeycomb structured body in which multiple through-holes are arranged longitudinally in parallel with one another with a partition wall therebetween; and Pd and Rh supported on the partition walls of the honeycomb structured body, wherein the honeycomb structured body is an extrudate containing a ceria-zirconia complex oxide and alumina, a Pd-carrying region where only Pd is supported is formed on the partition walls within a predetermined width from one end of the honeycomb structured body, and a Rh-carrying region where only Rh is supported is formed on the partition walls within a predetermined width from the other end of the honeycomb structured body, and the Pd-carrying region extends to at least 50% of the length of the honeycomb structured body, and the Rh-carrying region extends to at least 20% of the length of the honeycomb structured body.

Abstract: The present invention provides a honeycomb catalytic converter including: a honeycomb structured body in which multiple through-holes are arranged longitudinally in parallel with one another with a partition wall therebetween; and a noble metal supported on the honeycomb structured body, wherein the honeycomb structured body contains a ceria-zirconia composite oxide and alumina, and cerium on a surface of each partition wall has a lower concentration than cerium in a central portion of the partition wall in a thickness direction.

Abstract: The present invention relates to a honeycomb catalytic converter including: a honeycomb structured body in which multiple through-holes are arranged longitudinally in parallel with one another with a partition wall therebetween; and a noble metal supported on the honeycomb structured body, wherein the honeycomb structured body contains a ceria-zirconia complex oxide and alumina, each partition wall includes a first carrier layer defining a surface layer of the partition wall and carrying Pd, and a second carrier layer located more inwardly of the partition wall than the first carrier layer and carrying Rh.

Abstract: The present invention relates to a honeycomb catalytic converter including: a honeycomb structured body in which multiple through-holes are arranged longitudinally in parallel with one another with a partition wall therebetween; a noble metal supported on the honeycomb structured body; and an inlet-side end face and on outlet-side end face, wherein each partition wall includes a substrate portion in the form of an extrudate containing a ceria-zirconia complex oxide and alumina, and a coat layer formed on a surface of the substrate portion and containing the noble metal, and the inlet-side end face has a higher aperture ratio than the outlet-side end face.

Abstract: A catalyst for decomposing perfluorinated compounds is composed of tungsten (W) and nickel (Ni) as main components and composed of aluminum (Al) or silicon (Si) as a supporter.

Abstract: A method for producing an olefin oligomer is disclosed, in which an olefin oligomerization reaction is performed in the presence of an olefin oligomerization catalyst comprising (A) a chromium compound, (B) an amine compound of the general formula (1): (R1 to R4 represent a group such as a hydrocarbon group, Y represents a structure represented by —CR5R6—, R5 and R6 represent a group such as a hydrogen atom, and Z represents an integer of 1 to 10), and (C) a compound such as an organometal compound; and the olefin oligomerization catalyst.

Abstract: Disclosed is a catalyst for use in hydrotreating hydrocarbon feedstocks and methods of making the same catalyst. Specifically, a catalyst is disclosed comprises at least one Group VIB metal component, at least one Group VIII metal component, an organic additive resulting in a C-content of the final catalysts of about 1 to about 30 wt % C, and preferably about 1 to about 20 wt % C, and more preferably about 5 to about 15 wt % C and a titanium-containing carrier component, wherein the amount of the titanium component is in the range of about 3 to about 60 wt %, expressed as an oxide (TiO2) and based on the total weight of the catalyst. The titanium-containing carrier is formed by co-extruding or precipitating a titanium source with a AI2O3 precursor to form a porous support material primarily comprising AI2O3 or by impregnating a titanium source onto a porous support material primarily comprising AI2O3.

Abstract: In a photocatalyst and a photocatalyst carrier, tungsten oxide microcrystals that have a crystal grain size of 10 nm or less and oxidizes a gaseous chemical substance and titanium oxide microcrystals that have a crystal grain size of 10 nm or less and oxidizes the gaseous chemical substance are irregularly arranged to form a solid.

Abstract: The present invention relates to a honeycomb catalytic converter including: a honeycomb structured body including in which multiple through-holes are arranged longitudinally in parallel with one another with a partition wall therebetween; and a noble metal supported on the honeycomb structured body, wherein the honeycomb structured body contains a ceria-zirconia complex oxide and alumina, each partition wall includes a first carrier layer defining a surface layer of the partition wall and carrying Rh, and a second carrier layer located more inwardly of the partition wall than the first carrier layer and carrying Pd, and the Pd concentration on the first carrier layer side of each second carrier layer is higher than the Pd concentration in the center of the second carrier layer.

Abstract: The present invention relates to a honeycomb catalytic converter including: a honeycomb structured body in which multiple through-holes are arranged longitudinally in parallel with one another with a partition wall therebetween; and a noble metal supported on the honeycomb structured body, wherein each partition wall includes a substrate portion in the form of an extrudate containing a ceria-zirconia complex oxide and alumina, and a coat layer formed on a surface of the substrate portion and containing the noble metal, and the partition walls have a thermal expansion coefficient of 7.0×10?6/° C. to 8.0×10?6/° C. in a longitudinal direction.

Abstract: An electrically heated catalyst includes a honeycomb substrate, an electrode, and a joining section. The honeycomb substrate and the joining section include matrices and conductive fillers. The matrices contain borosilicate including at least one of an alkali metal and an alkaline earth metal. The joining section preferably has a softening point lower than that of the honeycomb substrate.

Abstract: The present invention discloses a preparation method of a catalyst with white carbon black modified by Zr—Nd—O and use thereof, and belongs to the field of catalyst technologies. In the present invention, an organic solvent evaporation induced self-assembly method is used to load Zr—Nd—O onto white carbon black to obtain a mesoporous Zr—Nd—O/white carbon black catalyst. The mesoporous Zr—Nd—O/white carbon black catalyst in the present invention has high catalytic activity, contains uniformly distributed mesopores with a relatively large average aperture, and has a simple preparation process, etc.

Abstract: The disclosure relates to a process for producing a VPO catalyst containing molybdenum and a vanadyl pyrophosphate phase, which comprises the steps: a) provision of a reaction mixture comprising a V(V) compound, a P(V) compound, an Mo compound, a reducing agent and a solvent, b) reduction of the V(V) compound by means of the reducing agent at least in parts to give vanadyl hydrogenphosphate in order to obtain an intermediate suspension, c) filtration of the intermediate suspension from step b) in order to obtain an intermediate, d) drying of the intermediate at a temperature of not more than 350° C. in order to obtain a dried intermediate and e) activation of the dried intermediate at a temperature above 200° C., characterized in that not more than 0.2% by weight of water, based on the weight of the reaction mixture, is present in step a) and no water is withdrawn during the reduction in step b).

Abstract: A system and method for lysing of whole blood for CO-Ox measurement uses a lysing chamber for acoustic lysing of whole blood in a module in which the lysing chamber is separate from a CO-Ox measurement chamber. The disclosed acoustic lysing system and method avoids the expense and complexity of chemical lysing methods and allows the whole blood sample to be lysed while under continuous flow through the lysing chamber. The acoustic lysing chamber is provided upstream from a CO-Ox measurement chamber. The separation of the lysing chamber from the Co-Ox measurement chamber provides freedom to arrange and orient various optical components and/or other CO-Ox measuring components around the CO-Ox measurement chamber. The decoupling of the lysing chamber from the CO-Ox measurement chamber allows for more efficient design of the ultrasonic lysing transducer and CO-Ox measurement optics.

Abstract: Provided in part herein are multiple-tube devices that contain a region of reduced wall thickness, which devices facilitate biological fluid processing and analysis. Also provided in part herein are methods of manufacturing and using such devices.

Abstract: Provided herein are assay cuvettes as well as related kits and methods for storing and transporting multiple solid reagents, and for performing diagnostic assays using the reagents held therein. The solid reagents are constrained within separate containers inside a lid of the cuvette. The containers are open to the inner chamber of the cuvette such that, when liquid buffer, reagent, or sample solutions is added to the cuvette, the solid reagents can be dissolved in the liquid to create within the cuvette a mixture that can then be assayed.

Abstract: An in-situ analyzer for a nutritive salt includes an injector, a calorimetric detector (11), a mixing ring (12), a sample pipeline, a pure water bin, a standard solution bin and various reagent bins of the analyzer which are correspondingly connected to ports of a multi-way valve (5). A microprocessor is connected to a first motor driver and a first motor in turn, and then connected to an injection pump (6) of the injector. The microprocessor is connected to a second motor driver and a second motor in turn, and then connected to the multi-way valve (5) for controlling one port in the multi-way valve connected to the injector to be in respective and corresponding communication with other ports in the multi-way valve (5). The colorimetric detector (11) is connected with the microprocessor.

Abstract: Multi-well collapsible basket arrays and methods for their use with high throughput culture and histology analysis of spheroids and organoids. Such a collapsible basket array includes a collapsible cellular array structure having multiple cells and connectors that interconnect adjacent pairs of the cells to cause the collapsible cellular array structure to collapse from an expanded configuration to a collapsed configuration in which the connectors are partially wrapped around perimeters or circumferences of the cells, whereby the collapsible cellular array structure is expandable to acquire an expanded configuration capable of individually aligning the cells thereof with wells of a well plate. The collapsible basket array further includes inserts individually mountable to the cells of the collapsible cellular array structure, with each insert including a permeable basket with pores sized to retain spheroids or organoids within the basket.

Abstract: A method and system for performing biomolecule extraction are provided that use liquid-to-liquid extraction (LLE) in combination with an electrowetting on dielectric (EWOD) device to provide a biomolecule extraction solution that has high extraction efficiency and that is less costly and easier to use than current state of the art methods and systems. The system and method are well suited for, but not limited to, extraction of DNA, RNA and protein molecules.

Abstract: A measuring cuvette for counting and/or characterizing cells, the measuring cuvette including a base and a transparent lateral enclosure extending from the base so as to form with the latter an optical measurement chamber; the base having a through-orifice with a diameter of 30 to 100 ?m for cells to pass through, characterized in that the base and the transparent lateral enclosure form a one-piece cuvette suitable both for impedance measurement and for optical measurement. Also, a system for characterizing cells, which includes the measuring cuvette.

Abstract: A microfluidic test device has a body, a first chamber having an outlet provided with a first valve and holding a first buffer having a first buffer volume, a primary reaction chamber, a sample inlet for receiving and feeding a sample having a sample volume, into the microfluidic test device, a first fluid path connecting the outlet of the first chamber and the sample inlet, a second fluid path connecting the sample inlet and the primary reaction chamber, a primary test part having a primary test chamber, a third primary fluid path connecting the primary reaction chamber and the primary test part, a primary valve arranged in the third primary fluid path, a flow driving device configured to move fluid from the primary reaction chamber to the primary test part, and a heating assembly configured to heat a reaction fluid in the primary reaction chamber.

Abstract: A functional material for testing a liquid sample includes a based material in a sheet shape and a channel part provided on a mounting surface of the base material wherein the channel part is composed with water-permeable fibers having permeability, and water-impermeable fibers having impermeability. The water-permeable fibers and the water-impermeable fibers are arranged along the longitudinal direction of the channel part, forming voids wherein the voids are in a mesh structure in which one of the voids connects to another of the voids such that the empty spaces are linked from a base end to a tip end of the channel part. A thickness of the channel part is ranged from 20 ?m mm to 5 mm, and a width of the voids is ranged from 10 ?m to 200 ?m, allowing the liquid sample to move from the base end to the tip end due to capillarity.

Abstract: The present invention relates to a device and a method for qualitative and quantitative analysis of heavy metals and more particularly provides a device and a method for qualitative and quantitative analysis of heavy metals utilizing a rotary disc system.

Abstract: A disposable cartridge may have a fluid analysis chip for receiving a fluid to be analyzed. The fluid analysis chip may be attached to a fluid preparation unit of the disposable cartridge and may include a base layer. The fluid analysis chip may also include a spacer layer disposed over the base layer, the spacer layer including a microchannel formed therein, the microchannel being configured to guide a flow of the fluid to be analyzed within the fluid analysis chip. The fluid analysis chip may also include a cap layer disposed over the spacer layer, the cap layer including an inlet and an outlet for establishing fluid communication with the microchannel included in the spacer layer, and an interface layer disposed over the cap layer, the interface layer being configured to attach the fluid analysis chip to the fluid preparation unit of the disposable cartridge.

Abstract: The invention relates to methods and compositions useful for routing and tracking multiple mobile units within a microfluidic device. Mobile units may be routed through a plurality of chemical environments, and the mobile units may be tracked to determine the path and/or environments that the mobile units have routed through. Mobile units may be routed in accordance with a predetermined algorithm. Mobile units may be routed through microfluidic devices in ordered flow. Absolute or relative position of a unit inside a microfluidic device, e.g. within an ordered set of units, may be used to identify the routing path history of the unit.

Abstract: A system and method for processing and detecting nucleic acids from a set of biological samples, comprising: a capture plate and a capture plate module configured to facilitate binding of nucleic acids within the set of biological samples to magnetic beads; a molecular diagnostic module configured to receive nucleic acids bound to magnetic beads, isolate nucleic acids, and analyze nucleic acids, comprising a cartridge receiving module, a heating/cooling subsystem and a magnet configured to facilitate isolation of nucleic acids, a valve actuation subsystem configured to control fluid flow through a microfluidic cartridge for processing nucleic acids, and an optical subsystem for analysis of nucleic acids; a fluid handling system configured to deliver samples and reagents to components of the system to facilitate molecular diagnostic protocols; and an assay strip configured to combine nucleic acid samples with molecular diagnostic reagents for analysis of nucleic acids.

Abstract: Embodiments of the present disclosure relate to a magnetic bead platform for isolating sperm cells from biological samples. In some embodiments, such magnetic bead platforms integrate recognition reagents to its surface to bind target cells, such as sperm cells. Such embodiments provide the ability to at least one of rapidly isolate and quantitate sperm cells from biological samples as occur in sexual assault evidence, for example, thereby enhancing identification of suspects in these cases and contributing to the safety of society.

Abstract: A device for separating material composites to be disposed of, including at least two material fractions with differing material properties, and a method for separating such material composites are provided. The device, in a region of an upper cover plate, has a bowl-shaped dispensing channel having at least one opening facing toward an impact chamber, and a dispenser arranged in the channel and designed to receive material fractions of a second type from the region of the chamber above a first separating screen and/or near the upper cover plate. Individual material fractions of a material composite, such as a material fraction of the second type to be comminuted and having a lower density than a first material fraction, may be separated in larger pieces from remaining material, to facilitate the transport of individual material fractions and further processing as part of raw material recovery.

Abstract: An animal slurry macerator (1) comprising a housing (2), a slurry chamber (3) in the housing (2) for receiving slurry from a slurry inlet (6) on the housing (2), a rotatable cutting plunger (4) in the slurry chamber (3) for macerating slurry, and a plurality of slurry outlets (7) on the housing (2) for discharging macerated slurry from the slurry chamber (3) wherein the slurry outlets (7) are provided with air-valves (8) at the housing (2) to facilitate air flow through the slurry outlet (7).

Abstract: A method for treating cannabis comprises treating a feedstock of cannabis and obtaining treated feedstock comprising comminuted cannabis; pneumatically conveying the treated feedstock to a cyclonic separator; and, subjecting the treated feedstock to a first cyclonic separation stage and obtaining a first stream of treated feedstock separated out of a fluid stream by the first cyclonic separation stage and a first fluid stream having a reduced level of treated feedstock.

Abstract: A grinding machine for grinding foodstuffs, such as meat or the like, includes an orifice plate at the outlet of a grinding head. The orifice plate has collection passages that discharge a mixture of soft material and hard material through the orifice plate. A separator assembly is positioned downstream of the orifice plate for separating the soft material from the hard material. The separator assembly includes a separator chamber that receives the mixture of soft material and hard material, in combination with a rotatable separator screw positioned within the separator chamber. Rotation of the separator screw functions to separate the soft material from the hard material. Soft material is discharged through perforations in the separator chamber and hard material is discharged through a discharge of the separator chamber.

Abstract: A device for wet mechanical separation of a mixture of solid materials of different density comprises a rotatable drum having a bottom wall, a closed peripheral wall and an open top. The drum tapers conically upwards and vertically. A motor is provided for rotating the drum in a rotation direction. A supply supplies a separating liquid with a mixture of solid materials of different density through the open top into the rotatable drum. During operation rotating the drum results in driving the separating liquid with the mixture of solid materials outwardly towards the inner wall of the drum. Depending on their density solid materials to be separated either float on the surface of separating liquid or sink towards the bottom wall and can be discharged and gathered from the top or bottom of the drum, respectively. The device comprises at least one discharge extending radially outwards from the bottom wall of the drum for separating liquid and solid materials that have sunk to the bottom wall.

Abstract: A magnetic filtration device for installing into an opening of a reservoir, including, but not limited to acting as a replacement to a standard drain plug commonly positioned at the bottom of the reservoir. The magnetic filtration device may attract and capture magnetic (ferromagnetic) particulate circulating throughout a mechanical system. Applications for the device include engines, motors, pumps, compressors, gear boxes, transmissions, hydraulic systems, fuel systems and generators. The magnetic filtration device may comprise a magnet core enclosed within a magnet casing, with additional rods affixed to and/or arranged around the magnet casing to alter the radius of the magnetic field.

Abstract: The present invention relates to a process for treating non-sulfidic ores with a collector composition containing a primary and a secondary collector, wherein the primary collector is selected from the group of amphoteric and anionic surface active compounds and the secondary collector is an ethoxylated fatty acid wherein the average degree of ethoxylation is higher than 0 and less than 2, to collector compositions suitable for use in the above process, and to pulp comprising such collector compositions.

Abstract: Centrifuges are useful to, among other things, remove red blood cells from whole blood and retain platelets and other factors in a reduced volume of plasma. Platelet rich plasma (PRP) and or platelet poor plasma (PPP) can be obtained rapidly and is ready for immediate injection into the host. Embodiments may include valves, operated manually or automatically, to open ports that discharge the excess red blood cells and the excess plasma into separate receivers while retaining the platelets and other factors in the centrifuge chamber. High speeds used allow simple and small embodiments to be used at the patient's side during surgical procedures. The embodiments can also be used for the separation of liquids or slurries in other fields such as, for example, the separation of pigments or lubricants.

Abstract: A reject chamber for use with a hydrocyclone for separating a fiber suspension into a heavy fraction substantially containing heavy contaminants and a light fiber fraction substantially containing fibers, the reject chamber having an internal cavity, a reject inlet into the internal cavity, and a reject outlet out of the internal cavity, the longitudinal axis of the reject outlet being angled relative to the longitudinal axis of the reject inlet. The reject chamber has a stem that extends into the internal cavity at the elbow of the reject chamber, and at least two bumps, each of which extend into the chamber on opposite sides of the stem, the reject chamber taken along a cross section through the stem and between the bumps having symmetrical sides.

Abstract: A portable multi-nozzle air flow meter. A nozzle cover is attached to a front portion of a cylindrical housing. A nozzle panel is attached to an inner portion of the nozzle cover, with a central insertion hole being defined in a central portion thereof, such that a measuring nozzle is detachably inserted into the central insertion hole. The nozzle panel includes a sealing portion provided an inner peripheral portion of the central insertion hole. One or more fixed nozzles arranged in the nozzle panel in a circumferential direction about the measuring nozzle, such that a cross-sectional area thereof is adjustable depending on an amount of air flow discharged from a duct.

Abstract: A spray head adapted for connection to a supply of fluid. The head includes a body to receive the supply of fluid and a number of conical mixing volumes, in fluid connection with the body and supply of fluid, each conical mixing volume having an outlet. Each conical mixing volume includes at least one first inlet for a flow of fluid into the conical mixing volume at an angle to a conical axis thereof, and at least one second inlet for a flow of fluid into the conical mixing volume substantially parallel to the conical axis. There is a valve disposed upstream of the conical mixing volumes, the valve adapted to divide and vary the supply of fluid flow between the at least one first inlet and the at least one second inlet, which in turn varies the output of the fluid from the outlet of the conical mixing volumes.

Abstract: A showerhead engine internally swirls water within a swirling chamber. Multiple swirling chambers may be used, each separated from one another. The water is swirled angled through holes in a mid plate. As the water passes through the angled holes, it is projected out an angle. The water then contacts the swirling chamber wall and continues to follow the curvature of the wall. The curved wall paired with the angled entry causes the water to continue to swirl within the swirling chamber. The water is released out of the swirling chamber through slots, which allow the water to retain the angular velocity at a discharge angle.

Abstract: A fire protection sprinkler including a frame body having an inlet, an outlet, defining an internal passageway extending between the inlet and the outlet along a sprinkler axis. A dome shaped deflector member is centered, axially aligned with the sprinkler axis, and spaced from the outlet. The deflector member has an outer surface and an inner surface that preferably includes: a peripheral region, a central region and an intermediate region. The intermediate region includes a primary deflecting surface, and a secondary deflecting surface that is surrounded by the primary deflecting surface. The deflector member provides for generation of a non-circular spray pattern defined by four zones of fluid density concentrically formed about the sprinkler axis.

Abstract: A device for dispensing a fluid medium comprises a head portion and a base body portion, and further comprises a cavity for receiving the fluid medium, wherein the head portion comprises a dispensing opening leading into the cavity for dispensing the fluid medium, wherein the device further comprises a rod that is displaceable in an axial direction between a first end position and a second end position and comprises a sealing portion at a first end portion of the rod that in the first end position is arranged spaced from the dispensing opening and in the second end position closes the dispensing opening on a side facing the cavity. A second end portion of the rod is guided out of the cavity for coupling the rod to an actuator, wherein the device further comprises a seal for sealing the second end portion with respect to the cavity.