39 results about "Fluid cell" patented technology

The invention discloses a microfluidic reaction chip, a sample pretreatment device and a control method thereof. The microfluidic reaction chip comprises a chip body, a purification assembly and a liquid storage unit for preloading reaction liquid, wherein the chip body is provided with a containing groove, a sample liquid pool, a uniform mixing pool and a liquid collecting pool; the purification assembly can be assembled on the chip body and is communicated with the accommodating groove, the sample liquid pool, the uniform mixing pool and the collection liquid pool; the liquid storage unit can be assembled in the containing groove and release reaction liquid, the sample liquid pool is used for containing a sample and located on a flowing path of the reaction liquid, and the sample and the reaction liquid can controllably flow between the sample liquid pool and the uniform mixing pool in a reciprocating mode to obtain mixed liquid; the purification assembly is located on a flowing path of the mixed liquid in the sample liquid pool, and a purified solution obtained through separation of the purification assembly flows into the collection liquid pool. The microfluidic reaction chip disclosed by the invention can be used for obtaining a purified solution for flow type sample loading analysis through reaction. The pre-sample treatment device is small in size, and the pre-sample treatment cost is reduced.

The present invention provides a sheath flow impedance particle analyzer and a sample measurement method thereof, which includes a premixing pool, a sample needle, a sheath flow impedance counting pool, a sheath liquid pool, a rear sheath isolation pool, a rear sheath waste liquid pool and a waste liquid pool, wherein the rear sheath isolation pool, the rear sheath waste liquid pool and the waste liquid pool are in a closed environment and a normal pressure state during the measurement process. The present invention can simplify the structure of the sheath flow impedance particle analyzer, realize the parallel execution of the emptying operation of the rear sheath waste liquid pool and the measuring operation of the sheath flow impedance counting pool, thereby achieving the dual purpose of increasing the sample measurement speed and reducing the instrument cost and volume.

Systems and methods determine physical properties of drilling mud by modeling velocity and dispersion behavior of drilling mud based on signals received from a downhole fluid cell device. The systems and methods may determine fluid and / or gas properties. The systems and methods may provide enhancement to interpretation of data from logging tools. The systems and methods may be integrated with a drilling control system to design optimum drilling mud and / or provide real-time monitoring and adjustment of drilling mud properties.

The invention discloses a liquid laser denudation sampling system and method, a storage medium and computer equipment. The system comprises a liquid injection device, a denudation pool and a waste liquid discharge device, the liquid injection device is used for extracting a liquid sample and injecting the liquid sample into the liquid storage tank through the liquid injection port and the first channel; after the liquid sample is analyzed, the washing liquid is extracted and injected into the liquid storage tank through the liquid injection port and the first channel; the liquid discharge device is used for discharging the liquid sample through the second channel and the liquid discharge port after the liquid sample is analyzed; and when the first channel and the liquid storage tank are cleaned, the cleaning liquid after cleaning is discharged through the second channel and the liquid outlet. According to the liquid sample injection device, air in the liquid storage tank and the first channel can be fully discharged in the liquid sample injection process, meanwhile, the functions of liquid sample injection, denudation tank cleaning, waste liquid discharging and the like are integrated, and the liquid sample analysis process is more automatic, simpler and more convenient.

The utility model relates to the field of solution particle detection and analysis, and particularly provides a micro-flow imager, aiming at solving the problem that the length of the existing micro-flow imager in a certain direction is too long. In order to achieve the purpose, the microflow imager comprises a frame body; the light source is arranged on the frame body; the reflecting mirror is arranged in front of the light source in the propagation direction of light in the light source, a reflecting surface is arranged on the reflecting mirror, the reflecting surface and the propagation direction of the light in the light source form a certain angle and are not perpendicular to each other, and the reflecting surface is used for turning the path of the light; a sample flow channel in the liquid pool is used for containing detected liquid, and the sample flow channel is arranged between the light source and the reflecting mirror in the propagation direction of light in the light source 2; and the camera assembly is arranged on one side of the reflecting mirror and is used for receiving the light reflected by the reflecting surface. According to the utility model, the problem that the light path occupies too much space of a table top in a certain direction is solved by folding the light path.

The application provides a kind of marine structure flow field simulation method, the method comprises: generating calculation grid and object surface grid for flow field simulation;Initialize object surface grid level set function field;According to flow field information, calculate the force condition of object surface, calculate object translation vector and rotation vector;Complete data mapping of object surface grid to calculation grid, obtain the level set function field of calculation grid;According to the obtained calculation grid level set function field, divide cell type;Carry out geometric calculation to cut cell, based on cut cell flow field reconstruction strategy, complete fluid cell, cut cell estimated speed update;Solve pressure Poisson equation, obtain pressure field, pressure gradient, update velocity field according to the obtained pressure gradient, obtain the final velocity field satisfying continuity condition.The marine structure flow field simulation method of the application greatly improves the numerical simulation efficiency of complex structure flow field, and reduces the implementation difficulty.

The present invention discloses a self-pumping microfluidic chip for quantitative detection of whole blood biomarkers, which relates to the technical field of dark-field microscopy detection of tumor markers. The chip comprises a glass substrate and a cover plate, wherein an inlet, a functional microchannel and an outlet are provided on the cover plate, and the functional microchannel comprises a mixing microchannel, a reaction chamber, a separation microchannel, a detection area, a first Tesla microvalve, a pressing chamber and a second Tesla microvalve connected in sequence; a magnetic bead accumulation area is connected to the separation microchannel, and a magnet placement area is provided next to the magnetic bead accumulation area; and a liquid storage tank is provided on the first inlet. The self-pumping microfluidic chip provided by the present invention has stable properties, good detection performance, and can realize the precise transportation of liquids. It will get rid of the problems of cumbersome operation and additional bulky instruments of traditional detection, and can accurately perform process judgment and quantitative detection of biomarkers in human whole blood samples.

The utility model discloses a plastic staining jar for fluorescence in situ hybridization experiments, which relates to the technical field of fluorescence in situ hybridization experiments and comprises a staining jar body, a liquid inlet is arranged on the rear side of the upper surface of the staining jar body, and a liquid storage tank is arranged inside the staining jar body. A water level monitoring mechanism is arranged on the right side of the upper surface of the dyeing vat body, a liquid inlet groove is formed in the lower end of the water level monitoring mechanism, a cylinder is slidably arranged in the water level monitoring mechanism, a dial gauge is arranged on the outer rod face of the water level monitoring mechanism, and a liquid outlet is formed in the right side of the outer surface of the dyeing vat body. Compared with an existing common plastic staining jar for the fluorescence in-situ hybridization experiment, the plastic staining jar for the fluorescence in-situ hybridization experiment has the advantages that the amount of liquid entering the staining jar is determined through a dial gauge outside the water level monitoring mechanism, and the height of the liquid in the staining jar is extremely convenient to observe; and no light source can enter the dyeing cylinder, so that the experiment accuracy is improved.

A sample producing apparatus produces an observation sample by placing an observation target object on a surface of a liquid pool on an optically transparent plate and then removing the liquid pool. The sample producing apparatus comprises a holding means for holding the plate, and a tilting means for tilting the plate such that the liquid pool on the plate is flowed. According to the sample producing apparatus, the working efficiency when producing the observation sample is improved.

The invention discloses a parallel type liquid pool, which comprises a 4k shielding layer and a 1K shielding layer arranged in the 4k shielding layer, a secondary liquid pool, a parallel flow resistance unit, a sample table and a heater are arranged in the 1K shielding layer; the secondary liquid pool is connected with a cold source through an input pipeline, and the input pipeline is connected with a parallel flow resistance unit; a first-stage liquid pool and a first-stage flow resistance unit are arranged outside the 1K shielding layer, the first-stage liquid pool is connected with a cold source through an input pipeline, and the first-stage flow resistance unit is connected to the input pipeline; and gas outlets of the second-stage liquid pool and the first-stage liquid pool are connected with a pump through an output pipeline. According to the invention, fluid shunting and flow velocity regulation and control are realized through the parallel flow resistance structure, stable standing of the fluid and high-temperature and low-temperature variable temperature isolation are guaranteed in combination with the parallel liquid pool, the problem that wide-range variable temperature measurement cannot be met in the prior art is solved, and the reliability and precision of fluid treatment and temperature-related experiments are improved.

The utility model discloses a liquid level measuring device which comprises a liquid storage pool, an infrared emitter is installed at the upper left corner of the inner side wall of the liquid storage pool in an inclined mode, infrared rays emitted by the infrared emitter are emitted to the liquid level in the liquid storage pool at an inclined angle, and limiting sliding rods are fixedly installed on the left side wall and the right side wall of the liquid storage pool respectively. A reflecting plate is arranged between the limiting sliding rods on the two sides, the limiting sliding rods are sleeved with the two ends of the reflecting plate in a sliding mode, buoyancy balance assemblies are further arranged on the left side and the right side of the reflecting plate, a horizontal graduated scale is arranged on the upper edge of the inner wall of the liquid storage pool, and infrared light emitted by the infrared emitter falls on the horizontal graduated scale after being reflected by the reflecting plate; working of the liquid level measuring device is not affected by pollution and corrosion of stored liquid, manual danger-related observation is not needed, measured numerical values are accurate, and measurement stability is better guaranteed.

The utility model provides a continuous microneedle sampling interstitial fluid detection device which comprises a pressing piece, a pressing cavity is arranged in the pressing piece, a liquid storage tank is arranged at the lower end of the pressing cavity and is attached to the upper surface of an electrochemical detection electrode, a microneedle seat is arranged on the lower surface of the electrochemical detection electrode, a microneedle head is embedded in the microneedle seat, and the microneedle head is connected with the pressing cavity. A micro-needle channel penetrates through the interior of the micro-needle head, a negative pressure cavity is defined by the upper surface of the micro-needle base, the inner ring wall of the electrochemical detection electrode and the inner ring wall of the liquid storage tank, the electrochemical detection electrode comprises a detection area and a circuit area, a liquid discharging channel is formed in the liquid storage tank, the negative pressure cavity is connected with the micro-fluidic chip through the liquid discharging channel, and the pressing piece is extruded to press the micro-needle head. When the pressing cavity disappears and the pressing piece is loosened, the pressing piece is in a rebound state, the pressing cavity is in a recovery state, and an integral cavity gap formed by the negative pressure cavity and the microneedle channel is in a negative pressure state, so that the interstitial fluid can be continuously and rapidly sampled and detected.

A method and apparatus for online UV monitoring in automated synthesis reactions. The apparatus includes a module with a fluid pool whose operating parameters remain substantially unchanged over time during monitoring and between sequential processes. The module includes a separable housing structure including a UV light source and an optical detector integrated in a substantially temperature insensitive fluid pool. A portion of the cell is defined by slots formed in the cell-chassis and supplemented with inlet and outlet channels sized to ensure that there is no bubble and / or stagnant fluid in the cell during the time of delivery of the liquid reactant to be measured through the inlet channel into the cell. The method is configured to determine the process and completion of the reaction (s) in real time, adjust the reaction time, and repeat the reaction (s).

The application discloses a kind of dosing device and system for cell culture, dosing device includes liquid storage mechanism and gas supply mechanism, liquid storage mechanism includes several liquid storage pools, the bottom of liquid storage pool is equipped with liquid outlet hole, liquid outlet hole is set so that the liquid inside liquid storage pool only flows out under the condition that the air pressure in liquid storage pool exceeds first air pressure;Gas supply mechanism includes several gas pipelines, each gas pipeline is sealedly connected with the upper end opening of liquid storage pool one by one, and gas supply mechanism transports preset air pressure greater than first air pressure into liquid storage pool through gas pipeline.The dosing device of the application can completely discharge the liquid in the liquid storage pool by setting the liquid outlet hole at the bottom of the liquid storage pool, avoiding the waste of drugs, and the structure is simple, easy to operate;On the other hand, the structure of the dosing device of the application is easy to cooperate with the microscopic imaging mechanism, to realize the synchronization of dosing and microscopic imaging, and the reaction of cells to drugs can be monitored.

A spectrum in-situ detection electrolytic tank suitable for insoluble gas is characterized in that an electrolytic tank cover is in a circular truncated cone shape with a wide upper part, a narrow lower part and an open top, and an optical window is arranged at the bottom of the electrolytic tank cover; a horizontal upper silica gel sheet and a horizontal lower silica gel sheet are arranged in the electrolytic tank main tank from top to bottom; a corrosion-resistant metal plate is arranged at the bottom of the lower silica gel sheet; an area above the corrosion-resistant metal plate is defined as a liquid pool; an area below the corrosion-resistant metal plate is a gas pool; the center of the upper silica gel sheet and the center of the lower silica gel sheet are respectively provided with a circular through hole, and a sheet-shaped working electrode is arranged between the through hole of the upper silica gel sheet and the through hole of the lower silica gel sheet. The circular ring sealing ring, the circular through holes in the centers of the upper silica gel sheet and the lower silica gel sheet form a step-shaped ventilation channel, bubbles generated in the electrolysis process and bubbles leaking out of a gap between the working electrode and the lower silica gel sheet are guided to penetrate out of the ventilation grid at the top of the annular sealing ring, and the bubbles are prevented from being accumulated at the bottom of the optical window.

The invention discloses a small space phase change heat transfer experimental device. The experimental device comprises an experimental liquid pool assembly, a liquid injection assembly and an experimental data acquisition assembly which are arranged in a support frame, the supporting frame forms a multi-layer structure in the vertical direction, a plurality of experimental liquid pools of the experimental liquid pool assembly are horizontally arranged in the supporting frame from top to bottom, the experimental liquid pools on every two adjacent horizontal planes are not overlapped on the projection plane, and a space is reserved between the lowest experimental liquid pool and the bottom of the supporting frame; the liquid injection assembly is used for injecting the experimental working medium in the liquid storage device into the evaporation table, and part of structural parts of the liquid injection assembly are arranged in the bottom space of the supporting frame; observation windows are arranged above and on the side of the experiment liquid pool, and optical observation equipment arranged outside the supporting frame obtains image data in the experiment liquid pool through the observation windows. The structural layout design of the multi-layer space experimental device is compact in structure, high in strength, high in load structural mass ratio, modularized in partition, beneficial to debugging and low in cost.

This disclosure relates to the adjustment of the measurement of cellular concentration in a fluid determined by a sensor. [Solution] The biofluid processing apparatus 10 includes a pump system and a valve system, a control unit, and an optical detection assembly. During the execution of the biofluid processing procedure, the control unit controls the operation of the pump system and the valve system to separate the cell-containing fluid from the blood of the blood supply source, and further controls the optical detection assembly to irradiate the cell-containing fluid with light. The control unit receives a signal from the optical detection assembly indicating the intensity of the light transmitted through the cell-containing fluid. The control unit receives or calculates an adjustment coefficient derived from historical data reflecting a cell collection procedure previously performed on the same blood supply source from which the cells were collected. The control unit determines the adjusted cell concentration of the cell-containing fluid based at least in part on the signal from the photodetector and the adjustment coefficient.

The invention discloses a multi-sensor fusion release film quality online evaluation system and method, and relates to the technical field of release film quality detection.The system comprises a liquid coating pool, an unwinding roller, a winding roller, a traction mechanism, a guide mechanism, a fixing mechanism, a visual module and a control module; the control module is configured to control the traction mechanism to execute a release force detection instruction if the quality evaluation demand information is obtained, call detection data after the current moment and define the detection data as data I; performing release force evaluation analysis based on the data I to obtain an evaluation result I and outputting the evaluation result I; then the fixing mechanism is controlled to act; if a signal fed back after the fixing mechanism completes the action is received, the traction mechanism is controlled to execute a mechanical strength detection instruction, and detection data after the current moment is called and defined as second data; and performing mechanical strength evaluation analysis based on the second data to obtain and output a second evaluation result. The method has the effect of improving the detection efficiency.

The present invention belongs to the field of solution mining technology and discloses an eddy current heating-based in-situ leaching method for ionic rare earth ore. The method comprises: arranging injection wells according to the rare earth ore body; arranging a liquid collecting pipe on the bottom surface of the rare earth ore body; arranging heating monitoring wells between the injection wells, wherein a coil assembly and an infrared thermal imaging detector are placed in the heating monitoring wells; injecting a leaching solution containing iron-nickel alloy particles; when the leaching solution flows into the collecting tank, activating a high-voltage alternating current box, causing the temperature of the iron-nickel alloy particles to rise under the action of an alternating magnetic field, heating the leaching solution; and displaying the captured infrared image on an infrared thermal imaging display through analog-to-digital conversion and image processing circuitry by the infrared thermal imaging detector. By observing the image on the infrared thermal imaging display, the scope of the leaching solution impregnation area in the ore body can be determined. The present invention solves the problem of being unable to confirm the seepage range and leakage location of the leaching solution during in-situ leaching of ionic rare earth ore, and can be used for ionic rare earth mining.

The present application relates to the technical field of flue gas content measurement, in particular to a system and method for measuring carbon dioxide content in flue gas of fixed pollution source, which comprises an absorption cell and an absorption container; an atomizer is arranged at the inner top of the absorption cell, one input end of the atomizer is connected with an absorption liquid pool through an absorption liquid delivery device, and the other input end is connected with the inner bottom of the absorption cell through a circulation device; a sample gas delivery device is connected with one side of the absorption cell; a transfer device is connected between the other side of the absorption cell and the absorption container; a sealed tube is arranged through the absorption container; the two ends of the sealed tube connected with the absorption container are transparent windows; a spectrophotometer is arranged at the transparent windows; an electrolyte solution and an indicator are arranged in the sealed tube; and a temperature measuring element is arranged in the absorption container; wherein the material of the sealed tube is a carbon dioxide selective permeation membrane. The system can be used to continuously and accurately measure the carbon dioxide content in the flue gas of fixed pollution source.

A measurement accuracy of a particle size distribution measuring device that performs a particle size distribution measurement in a line start mode is improved by a measurement cell used in a line start mode of a centrifugal sedimentation type particle size distribution measuring device that includes a cell main body and a cell cap. The cell main body has an opening provided on one end and stores therein a density gradient liquid WDGS. The cell cap closes the opening of the cell main body and has an internal passage R provided therein for holding a sample liquid WSS. When an application of a centrifugal force is received, the sample liquid WSS is introduced from the internal passage R into the density gradient liquid WDGS.

The invention relates to the technical field of crane pipes, and provides a vertical pipe for a loading crane pipe and an automatic liquid recycling and sampling method thereof, the linkage design of a vertical pipe main body and a bottom residual liquid pool is adopted, and a liquid shunting channel is formed through a side wall liquid outlet and an anti-overflow opening. According to the core principle, a multi-mode sensing system is used for cooperative work, a dynamic reference model of liquid flow impact force is established through an annular pressure array, liquid surface deformation characteristics are captured in real time through laser ranging, and the sampling position is accurately judged through infrared detection; when the system recognizes that the liquid level is inclined or the pressure is abnormal, stable liquid flow is formed through pulse type adjustment of the electromagnetic valve, and finally automatic control over the whole process of residual liquid recycling and sampling is achieved.

The invention discloses a leakage calculation method, system and equipment for liquid hazardous chemical substances in different scenes, and belongs to the technical field of hazardous chemical substance research. The method comprises the following steps: determining a current leakage scene according to environment inspection data; wherein the environment detection data at least comprises a leakage opening area, a leakage coefficient, internal pressure, environment pressure and physical and chemical properties of the liquid hazardous chemical substance; determining a matched target calculation model based on the current leakage scene; wherein the target calculation model at least comprises a leakage rate calculation unit, a flash evaporation rate calculation unit and a liquid pool evaporation capacity calculation unit; different leakage scenes correspond to different calculation models; and based on the target calculation model, calculating a cloud cluster gas amount and a liquid pool liquid amount generated by liquid hazardous chemical substance leakage in the current leakage scene. By means of the method, the gas-liquid two-phase leakage amount generated when the liquid hazardous chemical substance leaks is calculated.

The invention relates to the technical field of radiopharmaceutical labeling, and provides a microfluidics-based radiopharmaceutical labeling automation device and method, and the microfluidics-based radiopharmaceutical labeling automation device comprises a plurality of reactant sample injectors; the micro-channel reactor is connected with the plurality of reactant sample injectors; the purification column is connected with the micro-channel reactor; the plurality of leacheate sample injectors are connected with the purification column; the effluent liquid storage tank is connected with the purification column; the leacheate storage tank is connected with the purification column; the two-way valve is arranged on the pipeline between the microchannel reactor and the purification column and is used for switching the flow direction of the flow path; the intermediate product liquid storage tank is connected with one outlet of the two-way valve; the control system is electrically connected with the reactant sample injector, the leacheate sample injector, the two-way valve, the intermediate product driving pump and the micro-channel reactor. Liquid is accurately controlled through the control system, physical isolation of radioactive operation and personnel operation is achieved, efficient diffusion mixing is achieved through the micro-flow control technology, and the reaction rate is increased.

The application relates to the technical field of automatic control, in particular to a solid-liquid reaction control device based on digital microfluidics, which comprises a control module, a detection module, a solid fixing module, a solid plate and a digital microfluidic chip; the solid fixing module can be fixed below the digital microfluidic chip; the solid plate is used for loading solid and is detachable, can be inserted into the solid fixing module and can send the solid into the digital microfluidic chip; the digital microfluidic chip is provided with an in-out sample area, a solid-liquid reaction area and a detection area, and the areas are connected through electrodes; the in-out sample area is provided with a liquid storage pool which is used for storing reaction solution; the control module controls the voltage of each electrode to realize micro-droplet movement; the solution in the liquid storage pool is controlled to move to the solid-liquid reaction area, contacts the solid and reacts, and the solution can also be moved out of the solid-liquid reaction area to interrupt the reaction process of the solid; the control module can also control the to-be-detected micro-droplet to move to the detection area; and the detection module detects the to-be-detected micro-droplet in the detection area through a sensor probe thereof.

The invention relates to a deep-sea wind tunnel device for simulating deep-sea environment corrosion, and the device comprises a simulated deep-sea autoclave, a gas-liquid circulation adjustment system and an online detection system which are sequentially connected through a gas-liquid pipeline, and the simulated deep-sea autoclave comprises a sample holder and an electrochemical detection unit. The gas-liquid inflow channel and the gas-liquid outflow channel are used for communicating the interior of the kettle body with the gas-liquid circulation adjusting system; the gas-liquid circulation adjusting system comprises an outflow gas-liquid pressure adjusting flow path and a flow-back gas-liquid pressure adjusting flow path, and the outflow gas-liquid pressure adjusting flow path comprises a back pressure valve; the return gas-liquid pressure regulating flow path comprises a high-pressure circulating pump; the online detection system comprises a liquid storage tank and a plurality of detection sensors arranged in the liquid storage tank. The device can realize real-time detection on the corrosion reaction liquid containing microorganisms with specific concentration without influencing the cultivation of the microorganisms, and can accurately obtain the growth and metabolism physicochemical properties of the microorganisms in a specific temperature field and a specific pressure field, and the adhesion corrosion mechanism of the microorganisms on the surface of a material and the change of the corrosion development process of the microorganisms.

This invention relates to the field of photoelectric detection and particle analysis technology, specifically a high-sensitivity, wide dynamic range single-particle optical sensor. It includes a fluid cell, a light source, an extinction detection unit, a scattering detection unit, and a signal synthesis unit. The fluid cell forms a detection channel for particles carried by the fluid to pass through, and the light source emits a detection beam into the detection channel. The extinction detection unit is positioned in the transmission optical path to acquire the extinction signal, and the scattering detection unit is positioned in the scattering optical path to acquire the scattering signal. The signal synthesis unit sums or weighted sums the extinction and scattering signals to generate a single composite signal, and outputs particle size information and / or counting information based on the composite signal. The composite signal is dominated by the scattering signal in the small particle size range, the extinction signal in the large particle size range, and achieves a smooth transition in the transition range.

This invention relates to the field of Worthington jets, specifically to an apparatus and method for quantitative analysis of the mechanical energy of Worthington jets. The apparatus includes an exciter position and energy control component, a release component, a liquid pool, a digital image recording component, and a data analysis system. The release component carries and releases the exciter and is movably connected to the exciter position and energy control component, which drives the release component to the release position. The digital image recording component captures images of the Worthington jet occurring in the liquid pool. The data analysis system is connected to the image recording component and analyzes the image information acquired by the image recording component to obtain the quantitative analysis results of the Worthington jet's mechanical energy. This invention can obtain accurate mechanical energy of the Worthington jet object.

This invention belongs to the field of urine electrolyte content detection technology, specifically relating to a miniature integrated device and method for measuring urine electrolyte content. The device includes a first electrode on a silicon substrate, an internal reference liquid reservoir and a third microfluidic channel on a third chamber layer, a sample reservoir and a second microfluidic channel in a second chamber layer, a second electrode and a connecting cell on a silicon-based electrode layer, a first microfluidic channel in the first chamber layer, a potential measuring instrument on a cover plate, and a first, second, third, fourth, and fifth injection port on the entire device. Based on silicon micro-etching technology and combined with the principle of ion-selective electrode detection, this invention, through miniaturization of electrodes and electrolyte chambers, provides a low-cost, portable biological electrolyte detection instrument. Furthermore, by increasing the number of internal reference liquid containers, the number of ion types that the product can detect can be further increased.