Abstract: This invention relates to a handheld mobile device which can analyze and measure whole blood, serum, urine or analytes which contain target agents such as mycotoxin, aflatoxin or cholera etc. with a easy to use reusable cartridge consisting of a cartridge head and cartridge body. The cartridge comprises four syringes, one of which being detachable. A waste reservoir is integrated with the syringes.

Abstract: The present disclosure discloses a method for producing an ISE half-cell, including the steps of: immersing a first end of a hollow body into a membrane solution comprising at least one solvent and an ion-specific ionophore; removing the hollow body from the membrane solution; drying the hollow body and evaporating the solvent from the membrane solution, whereby an ion-selective membrane is created at the immersed end of the hollow body; and completing the hollow body to make an ISE half-cell. The present disclosure also discloses an ISE half-cell that is produced according to such a method. The present disclosure further discloses a sensor and a multiparameter sensor comprising several such ISE half-cells.

Abstract: A gas sensing device has a power source, data processing means and a memory for storing sampling configuration data and sensed data. Sensing means samples ambient gas adjacent the device according to first sampling configuration data and outputs sensed gas concentration data and sensed gas flow data. A telemetry module communicates the sensed data to a remote terminal and receives second sampling configuration data from the remote terminal for updating the first sampling configuration data. A gas monitoring system comprises the terminal and at least one gas sensing device remote from the terminal. The sampling configuration data comprises data representative of a frequency and duration of gas flow measurement, data representative of a frequency and duration of gas concentration measurement, and data representative of an offset time corresponding to a time interval between a gas flow measurement and a gas concentration measurement.

Abstract: Methods for determining the presence of an unmeasured chemical in an environment can include receiving a plurality of sensor readings from a plurality of chemical sensors, wherein each chemical sensor of the plurality of chemical sensors is configured to detect a different chemical, determining a cross-sensitivity pattern from one or more unmeasured chemicals in the plurality of sensor readings, comparing the cross-sensitivity pattern with one or more known chemical patterns, determining that the cross-sensitivity pattern matches at least one of the one or more known chemical patterns that correspond to one or more chemicals, and identifying one or more unmeasured chemicals based on determining that the cross-sensitivity pattern matches the at least one of the one or more known chemical patterns.

Abstract: An apparatus for selectively detecting an anion in a medium and/or selectively measuring the concentration of an anion in a medium. The apparatus comprises at least one sensor and a conductive polymer film and is configured such that dielectric and/or electric property changes of the conductive polymer film can be detected by the sensor when the conductive polymer film is in hydraulic contact with the medium or after it has been in hydraulic contact with the medium. Methods of selectively detecting an anion in a medium and/or selectively determining a concentration of an anion in a medium are also provided.

Abstract: A trace metal analysis detector and method of operating the same to detect metals in various fluid samples using boron doped diamond working electrodes.

Abstract: Methods and systems are for determining the concentration of a chemical species in an analyte solution. At least one train of segments are injected into a microfluidic channel having a first end and a second end, each train of segments having segments of analyte solution and segments of sensing solution which are immiscible with the segments of analyte solution. The train of segments is circulated from the first end to the second end of the microfluidic channel such that a reversible chemical exchange is established between the chemical species of each segment of analyte solution and a chemical indicator of the at least one contacting segment of sensing solution. The response of the chemical indicator is measured at the second end of the microfluidic channel and the concentration of the chemical species in the analyte solution is determined based on the response.

Abstract: The present application discloses a sensor for determining a measurand correlated with a concentration of at least one analyte belonging to the class of reactive oxygen species in a measuring fluid, the sensor including a sensor element having an indicator substance, wherein the indicator substance is oxidized into an oxidized form of the indicator substance by the at least one analyte, a means for generating a flow of current in the sensor element that causes a reduction of the oxidized form of the indicator substance and thereby regeneration of the indicator substance, an optical measuring sensor to detect measuring radiation influenced by the oxidized form of the indicator substance and to generate an electrical measuring signal using the influenced measuring radiation, and a sensor switch connected to the optical measuring sensor to receive the measuring signal and to ascertain a measured value of the measurand using the measuring signal.

Abstract: A gas detecting module includes a carrying plate, a sensor, a compartment body and an actuator. The carrying plate has a substrate and a gas opening. The compartment body is divided into a first compartment and a second compartment by a partition plate. The first compartment has an opening. The second compartment has an outlet and accommodates the actuator. The bottom of the compartment body has an accommodation recess receiving the carrying plate, whereby the gas opening is aligned with the outlet, and the sensor packaged on the substrate is disposed within the first compartment through the opening. The partition plate has a notch. The gas detecting module is assembled in a slim-type portable device having a casing. The casing has an inlet aligned with the first compartment. As the actuator is actuated, ambient gas is inhaled into the first compartment, and the sensor detects the gas flowing therethrough.

Abstract: This disclosure describes microfluidic devices that include one or more magnets, each magnet being operable to emit a magnetic field; and a magnetizable layer adjacent to the one or more magnets, in which the magnetizable layer is configured to induce a gradient in the magnetic field of at least one of the magnets. For example, the gradient can be at least 103 T/m at a position that is at least 20 ?m away from a surface of the magnetizable layer. The magnetizable layer includes a first high magnetic permeability material and a low magnetic permeability material arranged adjacent to the high magnetic permeability material. The devices also include a microfluidic channel arranged on a surface of the magnetizable layer, wherein a central longitudinal axis of the microfluidic channel is arranged at an angle to or laterally offset from an interface between the high magnetic permeability material and the low magnetic permeability material.

Abstract: A resin-framed membrane electrode assembly includes a membrane electrode assembly, a resin frame, and a clearance. The membrane electrode assembly includes an electrolyte membrane, a first electrode, a second electrode, and a step. The first electrode is located on a first surface of the electrolyte membrane and includes a first catalyst layer and a first diffusion layer which are stacked on the first surface in a stacking direction. The resin frame is disposed outside the membrane electrode assembly. The clearance is provided between the resin frame and an outer edge surface of the first diffusion layer to be filled with a filler such that the filler reaches a level higher than a lower one of a height of the first diffusion layer or a height of the resin frame in cross section in the stacking direction.

Abstract: According to one embodiment, a biosensor includes a substrate and a sensor matrix that is present in a two-dimensional region on the substrate. The sensor matrix includes a plurality of basic blocks. Each of the basic blocks includes at least three types of sensor elements.

Abstract: The subject of the invention is a microprobe for selective electroporation comprising at least two metal electrodes (A) immersed in a glass rod (E), characterized in that the glass rod (E) made of a primary glass is 50 ?m to 2 mm in diameter, preferably 50 ?m to 500 ?m, the metal electrodes (A) made of a metal alloy are formed as rods with diameter of 1 ?m to 100 ?m, preferably 20 ?m to 30 ?m, wherein endings of those rods are exposed, wherein the primary glass and the metal alloy are matched in such manner that dilatometric softening temperature DTM of the primary glass is highly similar to the temperature of melting for the metal alloy. The invention also includes a method of manufacturing of such a microprobe.

Abstract: The current invention pertains to electrochemical biosensors. The electrochemical biosensor of the current invention comprises: a) a sensing electrode having attached to its surface a binding agent capable of specifically binding to the analyte to form a binding agent-analyte complex and wherein the binding of the analyte to the binding agent alters the electron transfer properties at the sensing electrode surface thereby providing a change in the electrochemical response at the sensing electrode surface proportional to the number of binding agent-analyte complexes, and b) a test equipment capable of measuring the electrochemical response at the sensing electrode surface. The binding agent can be a binding protein, an antibody, or an aptamer, and the analyte can be a biomolecule. Accordingly, the current invention provides a method of detecting the presence or assessing the likelihood of development of a disease associated with an abnormal level of a biomolecule in a subject.

Abstract: The presently claimed invention provides an electrochemical analytical apparatus for electrochemical bath analysis. The apparatus comprise a static electrode and a rotatable unit. As steady liquid flow can be generated on the electrolytic surface of the static electrode by the rotatable unit through rotation, the static disk electrode does not involve any movement during the bath analysis such that the design of the electrical contact in the electrode can be substantially simplified.

Abstract: A sensor element includes a sensor arrangement and a heating arrangement. The sensor arrangement can be heated by the heating arrangement. The heating arrangement has an electrically conductive heating structure which is at least partially electrically insulated from the sensor arrangement by electrical insulation having an electrically insulating material. The electrically insulating material has gas-tight sintered particles which have forsterite particles, spinel particles, or a mixture of forsterite particles and spinel particles. Such particles may have an average size D50 of less than or equal to about 200 nm.

Abstract: A pH sensor comprising a metal oxide-polymer composite, comprising: a continuous polymer resin matrix; and a solid particulate, component dispersed in the polymer resin matrix comprising (i) metal oxides and (ii) a particulate carbon-based conductor wherein the metal oxides comprise Ta2O5 and RuO2 in a weight ratio of Ta2O5:RuO2 (on the basis of weight of metal component) in the range of from 90:10 to 10:90.

Abstract: A gas monitoring apparatus and system that provides for reliable and accurate monitoring of gaseous hydrogen and other compounds in dielectric oil. The apparatus provides an environment for and is used in conjunction with metal oxide semiconductor sensors. Thermal conditioning zones for oil provide an environment in which variations in oil temperature and ambient temperature are eliminated to insure that analytical data are not affected by these environmental conditions.

Abstract: The present invention relates to phaseguide patterns for use in fluid systems such as channels, chambers, and flow through cells. In order to effectively control filling and/or emptying of fluidic chambers and channels, techniques for a controlled overflowing of phaseguides are proposed. In addition, techniques of confined liquid patterning in a larger fluidic structure, including approaches for patterning overflow structures and the specific shape of phaseguides, are provided. The invention also proposes techniques to effectively rotate the advancement of a liquid/air meniscus over a certain angle. In particular, a phaseguide pattern for guiding a flow of a liquid contained within a compartment is provided, wherein an overflow of the phaseguide by a moving liquid phase is controlled by a local change in capillary force along the phaseguide, wherein said overflow by the liquid over the phaseguide is provoked at the position of the local change in capillary force.

Abstract: Analyzing a hydrocarbon-containing fluid includes providing a hydrocarbon-containing fluid to a separation system including a cyclone separator, and separating the hydrocarbon-containing fluid into a gas phase sample and a liquid phase sample. The liquid phase sample is separated into an aqueous sample and a non-aqueous sample. The volume of the gas phase sample and of the non-aqueous sample are assessed, and the ratio of the volume of the non-aqueous sample to the volume of the gas phase sample yields the condensate-gas ratio.

Abstract: A measuring electrode for chemical liquid in semiconductor process that measures a chemical liquid used for a semiconductor process comprises a first body having a first internal liquid chamber into which a first internal liquid is filled, and a flow tube for a part or all of which a responsive glass is used and that forms a flow channel where a chemical liquid as being a measuring object flows, wherein the flow tube is so arranged to penetrate the first body and the responsive glass makes contact with the first internal liquid in the first internal liquid chamber.

Abstract: The present invention comprises an optical train (50) and optional wavelength-selective photodetectors. The optical train (50) uses reflecting elements (600) including mirrors and/or prisms to fold the light path of the transmitted UV light beam to direct it through the body (100) of the instrument, through a sample vessel (200) using at least one pass but preferably two or more passes and into illumination contact with a photodetector (400). With each additional pass, the Beer-Lambert path length is effectively increased. Separate second optical train (53) and third optical train (54) exist for the detection and measurement of scattered light by illumination contact with one or more photodetectors.

Abstract: Devices and methods for detecting, identifying, and sequencing, compounds, complexes, and molecules are described. Electronic detection is combined with optical excitation to determine the presence or identity of an analyte of interest. Embodiments of the invention additionally provide devices and methods that allow highly parallel nucleic acid sequence determination.

Abstract: An electrochemical polymerization based salt content analyzer configured to determine salt composition in a direct, fast, and serial manner. The salt content analyzer includes three electrodes: a working electrode, a counter electrode and a reference electrode. In operation, the current passing through the electrodes as a sweeping voltage is applied may be analyzed to determine the salt content of the analyte. The working electrode includes an access control mechanism to only expose a fraction of the working length of the working electrode to the outside environment at any given time. The access control mechanism is advanced between tests to expose a fresh portion of the working electrode. Thus, testing may be performed in a serial manner.

Abstract: An amperometric sensor circuit for measuring chlorine concentration in water. The circuit includes first and second working electrodes coated with a hydrophilic membrane. A power supply and biasing circuit is configured to deliver a generally constant voltage between the first working electrode and a reference electrode and to generally deliver a constant current between the second working electrode and a counter electrode. A measurement circuit measures the current between the counter electrode and the first working electrode. A processing circuit is provided for determining the chlorine concentration based on the current measured by the measurement circuit.

Abstract: A stationary gas monitoring and testing system includes one or more gas monitoring stations 20, each of which includes at least one gas sensor. The system also includes a supply of testing span gas, a supply of testing zero gas, a gas distribution network connecting each gas sensor to the span gas supply and the zero gas supply through substantially separate conduits, and a controller for enabling the delivery of gas from the supply into the network for delivery to the one or more sensors. A one-way poppet valve at each gas monitor allows the supply conduits to be pressurized in advance. Pre-pressurized separate supply conduits minimize or eliminate the delay in delivering gas to each sensor for testing and calibration.

Abstract: The invention relates to a component (4) of a biosensor, comprising at least one first device (6) for receiving a sample liquid, wherein the device (6) is connected via a distributor channel (7) to further receiving devices (8 to 11), into each of which a feed channel (71, 72, 73, 74) branching off from the distributor channel (7) opens, and the feed channels (71, 72, 73, 74) are arranged in succession in flow direction (S) of the sample liquid passed on through the distributor channel (7). In accordance with the invention, it is envisaged that, in the distributor channel (7), in each case between two immediately successive feed channels (71, 72; 72, 73; 73, 74) in flow direction (S), at least one region (K) for at least temporary slowing or stoppage of the capillary flow of the sample liquid has been inserted.

Abstract: Described is an electrochemical flow cell (1) for analyzing fluid samples including a first member (100) including a first working surface (101), the first working surface (101) including a sample outlet (102), and a second member (200) including a second working surface (201), the second working surface (201) including a working electrode (202). The first and second member (100, 200) being connectable to each other to create a chamber (2) in between the first (101) and second working surface (201). The first working surface (101) being opposite and spaced apart from the second working surface (201) and the sample outlet (102) being directed at the working electrode (202). The electrochemical flow cell (1) includes an adjustment element for stepless adjustment of a distance (d) between the first working surface (101) and the second working surface (201).

Abstract: An electrochemical sensor cell is disclosed. The cell comprised of a diffusion membrane, a cathode, an anode, an electrolyte, electronic circuit board with electronic leads contained in housing. The anode is made of substantially pure bismuth. The electrolyte may be either solid or aqueous solution of potassium hydroxide (KOH) solution or acetic acid (CH3COOH). The cathode may be a carbon fiber substrate with gold deposited thereon. The sensor may be RoHS compliant.

Abstract: An ion sensitive system has sets of microfluidic microchannels forming ion sensitive electrodes by the assembly of a substrate with structured microchannels and another substrate including metal contacts on its surface. The integrated ion sensitive sensors are each composed of a microfluidic microchannel to contain an electrolyte, another microfluidic microchannel to contain the analyte and another microfluidic microchannel to contain a membrane liquid that separates the electrolyte from the analyte at the confluent junction of the three solutions. The system has the dimension of a thin and small disc and can be incorporated in an analyzing device.

Abstract: The present aspects of an embodiment make more efficient use of hydrogen on-demand (hereinafter “HoD”) systems, thereby improving fossil-fuel-powered systems on the market. One main aspect uses a disposable cartridge in which the electrolytic process takes place to separate gas molecules from a solution that uses a substantially dry-cell design. Generally, the aspects include a replaceable and reusable cartridge for the flow of electrolyte solution using a pump, which may include a variety of safety features. A HoD cartridge generator has a plurality of staggered conductive material members that require electrolyte solution to flow between them, from one or more inlets to one or more outlets, using one or more specified paths. A conventional or specially-formulated electrolyte solution may be used. One or more sensors allow the generator to have a steady flow of solution in and a steady flow of liquid-gas mixture out of the system.

Abstract: An electrolytic device includes four channels separated by three charged barriers. The device can be used to suppress an eluent stream containing separated sample analyte ions and/or to pretreat a sample stream containing unseparated analyte ions.

Abstract: An ion-selective electrode comprising: a housing, which surrounds a housing interior; an ion-selective membrane; especially a polymer membrane; and a sensing system, which is in contact with the ion-selective membrane, for sensing a potential of the ion-selective membrane, wherein the ion-selective membrane at least partially fills the housing interior, and is in contact with a medium surrounding the housing via at least one traversing bore through a housing wall of the housing.

Abstract: The present invention provides a substrate for a microfluidic device comprising a polymeric base plate, at least one sensor formed over the polymeric base plate for detecting at least one target analyte from a sample, the sensor comprising at least one reference electrode and at least one working electrode, wherein a plurality of nanostructures deposited over the working electrode for increasing the surface area of the working electrode, and at least one recognition element bound to or deposited over the nanostructures. The microfluidic device of the present invention is a point-of-care, self calibrated, self contained hand-held device for rapid screening and diagnosis of various disease markers.

Abstract: Described herein is an apparatus and methods for characterizing a fluid composition including exposing electrolyte to one fluid mixture, collecting a signal from an electrode in contact with the electrolyte, and simultaneously exposing the electrolyte to a second fluid, collecting a signal from a second electrode in contact with the electrolyte exposed to the second fluid, and comparing the signal difference between the electrodes with the Nerst equation wherein the temperature of the electrolyte is above 488° C. Carbon dioxide, nitrogen, and/or oxygen may be present in the fluid and/or the second fluid.

Abstract: The present invention provides an apparatus and method for performing heat-exchanging reactions on an electro wetting-based micro fluidic device. The apparatus provides one or multiple thermal contacts to an electro wetting-based device, where each thermal contact controls the part of the electro wetting-based device it communicates with to a designed temperature. The electrowetting-based device can be used to create, merge and mix liquids in the format of droplets and transport them to different temperature zones on the micro fluidic device. The apparatus and methods of the invention can be used for heat-exchanging chemical processes such as polymerase chain reaction (PCR) and other DNA reactions, such as ligase chain reactions, for DNA amplification and synthesis, and for real-time PCR.

Abstract: A device is intended to electrochemically measure biochemical reactions and includes a base plate, a sensor array situated on the latter, a coating of the base plate, and a sealing film with at least one recess. The recess is mechanically connected to the base plate and/or to the coating of the base plate and forms a flow cell above the sensor array. An inlet and an outlet of the flow cell are in the form of continuous recesses in the base plate. The active surfaces of the sensors are free of the coating and regions of the base plate adjacent to the sensors are covered by the coating.

Abstract: An object of the present invention is that variations in an applied membrane potential in the planar patch clamp device are suppressed to reduce a noise current, thereby enabling accurate measurement of an ion channel current. Disclosed is a planar patch clamp device including: an electrically insulative substrate provided with one or more fine through holes; a liquid reservoir that holds a conductive liquid provided on both surface sides of the through hole; and energizable electrode sections provided in the liquid reservoir; these electrode sections including: (a) an electrode vessel, at least part of which is made of an inorganic porous material, (b) an electrode in which a chloride NmCl layer is formed on the surface of a noble metal Nm, and (c) an electrode solution containing NmCl and an alkali metal chloride being dissolved therein at a saturated concentration.

Abstract: Method and apparatus to measure electrolytes. The apparatus has a measuring portion for measuring electromotive forces generated by a reference fluid and the sample fluid, respectively, by the use of an electrode portion. A dilution vessel for preparing the sample solution by diluting a sample fluid with a diluting fluid. A control portion for providing control such that the reference fluid and the sample solution are alternately supplied to the electrode portion from the dilution vessel and that a given amount of the diluting fluid is supplied to and wasted from the dilution vessel prior to the preparation of the sample solution.

Abstract: A device for displacing a small volume of liquid under the effect of an electric control, including a first substrate with a hydrophobic surface provided with a first electrical conductor, a second electrical conductor positioned facing the first conductor, and a third conductor, forming with the second conductor, a mechanism for analyzing or heating a volume of liquid.

Abstract: An electrochemical oxygen sensor includes a micro-porous plastic membrane supported on a sealing disk and located between a gas inflow port and the sensor's electrolyte. The membrane and disk minimize thermal shock effects due to using the sensor at a first location, at a first temperature, and then moving it to a second location at a different temperature.

Abstract: Exemplary embodiments provide diagnostic devices, systems and methods for determining the presence or absence of one or more markers or characteristics in one or more samples. An exemplary diagnostic device may display a first two-dimensional machine-readable output to indicate the presence or absence of a first characteristic in a sample. Similarly, the exemplary diagnostic device may display a second two-dimensional machine-readable output to indicate the presence or absence of a second characteristic in a sample. An image capture device may be used to automatically detect the two-dimensional machine-readable output appearing in the diagnostic device. A computational device may be used to automatically determine whether the presence or absence of the first characteristic and/or the second characteristic based on the two-dimensional machine-readable output displayed in the diagnostic device.

Abstract: Microelectrode comprising a body formed from electrically non-conducting material and including at least one region of electrically conducting material and at least one passage extending through the body of non-conducting material and the region of conducting material, the electrically conducting region presenting an area of electrically conducting material to a fluid flowing through the passage in use. An electrochemical cell which includes such a microelectrode is also disclosed.

Abstract: A sensor includes a housing, at least two electrodes within the housing, an electrolyte providing ionic conductivity between the electrodes and a vent member including a first section including a portion extending through a passage in the housing. The vent member also includes at least one extending member connected to the first section that extends through at least a portion of an interior of the housing. The first section of the vent member is porous so that gas can diffuse from the interior of the housing to an exterior of the housing via the vent member.

Abstract: A nanopore device is described wherein is provided a sample input (110), an input chamber (120), and first and second sample chambers (130, 140) connected to the input chambers (120) via first and second nanopores (135, 145).

Abstract: An ion sensor includes a sensor main body having a channel for a sample and an opening connected to the channel, a responsive portion which is filled in the opening and selectively responds to a specific ion, an electrode which has a ring shape, is set such that a central axis of the ring is substantially perpendicular to a central axis of the channel, and senses the response, and an output terminal which is formed out of one metal plate out of which the electrode is formed, has a pin shape, and is held by the sensor main body such that an axis extends along a direction substantially perpendicular to the central axis of the channel and the central axis of the ring.

Abstract: A liquid dielectrophoretic device comprises: a first container unit defining a first micro containing space including an electrode pair for generating a dielectrophoretic force; a second container unit defining a second micro containing space and including an electrode pair for generating a dielectrophoretic force; and a fluid channel unit defining a micro-channel between the first and second micro containing spaces and including an electrode pair having a middle region layer that has first and second enlarged sections and a middle section disposed between the first and second enlarged sections. The first and second enlarged sections are enlarged gradually from the middle section to the first and second micro containing spaces. A method for controllably transporting a liquid using the liquid dielectrophoretic device is also disclosed.

Abstract: An electrochemical sensor having at least two electrodes, and a reservoir chamber containing electrolyte. The reservoir chamber is internally coated with a wicking material to spread the electrolyte evenly over the walls of the reservoir.

Abstract: A method of measuring a quantity of a substrate contained in sample liquid is provided. This method can reduce measurement errors caused by a biosensor. The biosensor includes at least a pair of electrodes on an insulating board and is inserted into a measuring device which includes a supporting section for supporting detachably the biosensor, plural connecting terminals to be coupled to the respective electrodes, and a driving power supply which applies a voltage to the respective electrodes via the connecting terminals. One of the electrodes of the biosensor is connected to the first and second connecting terminals of the measuring device only when the biosensor is inserted into the measuring device in a given direction, and has a structure such that the electrode becomes conductive between the first and second connecting terminals due to a voltage application by the driving power supply.

Abstract: The multiplexed electrochemical microfluidic paper-based analytical device comprises multiple detection zones for the detection of multiple biochemical analytes from one single sample. Cavity valves integrated on the device will deliver the sample to different detection zones. These analytes include, but are not limited to, urea, creatinine, creatine, glucose, lactate, ethanol, uric acid, cholesterol, pyruvate, creatinine, ?-hydroxybutyrate, alanine aminotrasferase, aspartate aminotransferase, alkaline phosphatase, and acetylcholinesterase (or its inhibitors). This system will provide a simple and low-cost POC approach to obtain quantitative and multiple biological information from one sample (e.g. one drop of blood).