66 results about "Glass electrode" patented technology

The invention relates to the technical field of fractionation of lignocellulose biomass, and discloses a method for fractionating lignocellulose biomass by using a eutectic solvent, which comprises the following steps: mixing betaine and malic acid, stirring, and cooling to room temperature after the reaction is finished to obtain a clear and transparent eutectic solvent; the method comprises the following steps: mixing crushed lignocellulose biomass with a deep-eutectic solvent, and putting the mixture into a high-pressure reaction kettle; acetone and n-butyl alcohol are mixed according to the volume ratio of 3: 2-4: 1, and an anti-solvent is prepared; the method comprises the following steps: slowly adding an anti-solvent into a mixture of the lignocellulose biomass and the eutectic solvent, carrying out ultrasonic treatment, and then carrying out suction filtration. The glass electrode pH meter is used for measuring the pH value of the recovered deep-eutectic solvent, and the newly prepared deep-eutectic solvent is added according to the pH value, so that the stability of the solvent performance can be effectively maintained, the deep-eutectic solvent always keeps a good fractionation effect in multiple times of recycling, the utilization rate of the solvent is greatly improved, and the production cost is reduced.

The present invention discloses a photoelectrochemical sensor for the detection of hexavalent chromium ions. The photoelectrochemical sensor is a modified ITO glass electrode, and the modification material is a photosensitive composite film with high-sensitive optoelectronic activity. Due to the strong absorption effect of the photo electron acceptor on the photo electrons generated by the photosensitive complex, the sensor can generate a strong cathodic photoelectrochemical signal. By utilizing the enrichment performance of the photosensitive composite film for hexavalent chromium ions, and under the conditions of light illumination and an applied bias voltage, weakly conductive reduction products can be generated on the surface of the photosensitive composite film, which effectively reduces the conductivity of the photosensitive composite film, inhibits the optoelectrochemical activity, hinders the transfer of photo electrons to the electron acceptor, quenches the photocurrent, and the quenched photocurrent has a correlation with the content of hexavalent chromium. In the present invention, the preparation of the sensor is simple, the cost is low, the response is fast, the sensitivity is high, the detectable range is wide, and the detection limit is as low as 5 pM. The rapid determination of hexavalent chromium in environmental water bodies, drinking water and food can be realized.

The present invention belongs to the cross - field of glass preparation technology and electrochemical material technology, relates to glass electrode materials, and specifically relates to an iron borate glass material with a high iron - to - boron ratio and its application as a battery negative electrode material. Starting from the structure and composition of Fe2O3 - B2O3 glass, by corroding with acid, part of B2O3 in the glass will be corroded away, which will increase the Fe2O3:B2O3 ratio in each sample. Especially for the glass sample after acid treatment, its Fe2O3:B2O3 is much greater than 3 / 7, which is a glass material difficult to prepare by the traditional melting - cooling method; at the same time, the prepared material is still in a glassy state, and when it is applied to the battery negative electrode, the reversible capacity is increased by nearly 50%.

The application discloses a perovskite solar cell and a preparation method thereof. The composition of the perovskite solar cell comprises a glass electrode, an electron transport layer, a sensitized layer, a perovskite film, a hole transport layer and a metal electrode which are sequentially arranged, and the sensitized layer contains stannous ions. The preparation method of the perovskite solar cell comprises the following steps: 1) immersing the glass electrode on which the electron transport layer is deposited into a soluble stannous salt solution for soaking, and then taking out and drying to form the sensitized layer on the electron transport layer; 2) depositing the perovskite material on the sensitized layer to form the perovskite film, and then sequentially depositing the hole transport layer and the metal electrode on the perovskite film to obtain the perovskite solar cell. The perovskite film in the perovskite solar cell has good uniformity and compactness, and the perovskite solar cell has high photoelectric conversion efficiency. The preparation method is simple, and is suitable for large-scale popularization and application.

The present invention discloses a preparation method of an aptamer photoelectrochemical sensor for detecting toxins in food, comprising the steps of: dripping a TiO2 dispersion on the surface of an ITO conductive glass electrode, adding a chloroauric acid solution for electrodeposition after drying; modifying the electrode surface after deposition with a toxin aptamer in food for incubation, drying with nitrogen to obtain an apt / Au / TiO2 / ITO electrode, incubating the apt / Au / TiO2 / ITO electrode surface with 6-mercaptohexanol as a blocking agent, and drying to obtain a working electrode; using a saturated TiO2 solution as an electrolyte to obtain an aptamer photoelectrochemical sensor for detecting toxins in food. The preparation method can accurately detect the toxin concentration in food. The present invention also provides an aptamer photoelectrochemical sensor prepared by the method, and an application of the aptamer photoelectrochemical sensor in mycin analysis and detection.

The invention discloses a water quality on-line biotoxicity detection method and a water quality on-line biotoxicity detection device through a lactic acid bacteria PH inhibition method. The detection method comprises the following steps: preparing a first water sample and a second water sample; acquiring initial PH voltage values of the first water sample and the second water sample; performing constant-temperature culture on the first water sample and the second water sample; respectively acquiring PH voltage values of the first water sample and the second water sample after culture; and performing biotoxicity analysis calculation on the to-be-detected water sample. According to the method disclosed by the invention, the size of harmful substances in water is determined by monitoring the pH change caused by lactic acid bacteria metabolite lactic acid; pH is detected based on a mature glass electrode electrochemical principle method, and the detection precision is not influenced by water turbidity; the detection method provided by the invention has high consistency with a photobacterium method in the prior art for detecting the biotoxicity, and meets the related technical requirements in the determination of the acute toxicity of the water quality.

The application provides a recycled water irrigation system based on ultraviolet peroxo organic acid combination and a water treatment method. The system comprises a shell, a POA dosing tank and a control unit. The lower part of the shell is provided with a water inlet, and the upper part is provided with a water outlet. The water inlet is provided with a lifting pump. A glass liner is arranged in the shell. The interior of the glass liner is divided into a first chamber, a second chamber and a third chamber which are sequentially communicated by a baffle. A grid is arranged in the first chamber. The inner wall of the first chamber is provided with spiral flow guide lines. An ultraviolet light intensity sensor is arranged in the second chamber. The top of the third chamber is provided with a UV-Vis spectrometer with a built-in quartz cuvette. A nozzle, a stirring mechanism, a spiral mixer and a glass electrode pH sensor are arranged in the third chamber. The bottom of the third chamber is provided with an ultraviolet lamp. The system solves the safety and applicability problems of direct irrigation of recycled water through the synergistic effect of ultraviolet irradiation and oxidation.

The utility model designs a measuring cell of an industrial pH meter, which comprises a measuring cup and a top cover, and is characterized in that the measuring cup is made of porous alumina ceramics, holes of the porous alumina ceramics are of through hole structures, the hole diameter is 70 microns, the top cover is made of rubber, and a round hole is formed in the center of the top cover. The porous alumina ceramic measuring cup has the advantages that during measurement, hydrogen ions and other soluble ions in measured liquid can penetrate through the through holes, with the diameter of 70 microns, of the porous alumina ceramic measuring cup to enter the cavity of the measuring cup, and most solid particles cannot penetrate through the porous alumina ceramic to enter the cavity of the measuring cup. Due to the fact that direct contact between insoluble substances and the glass electrode is avoided, the purpose of protecting the electrode is achieved on the premise that pH value measurement is not affected. The porous aluminum oxide ceramic has the characteristics of high temperature resistance, corrosion resistance and stable chemical property, can be repeatedly used after being cleaned, and is relatively low in use cost.

The application belongs to the technical field of microbial sewage treatment, and particularly relates to an iron-carbon quantum dot / electrically active non-oxygen-producing photosynthetic bacteria / carrier hybrid cell factory and application thereof in sewage resourceization or carbon emission reduction; the iron-carbon quantum dot in the hybrid cell factory provided by the application promotes the non-oxygen-producing purple photosynthetic bacteria to utilize more light energy, and generates photo-generated electrons as an extracellular efficient electron donor source, and the photosensitive active substances in the extracellular polymeric substance of the non-oxygen-producing purple photosynthetic bacteria can promote the formation of a continuous cycle of trivalent iron and divalent iron, realize mutual cooperation, promote sewage resourceization and carbon emission reduction, and synthesize high-value-added products; and in addition to facilitating the recovery of biomass, the transparent conductive glass electrode as the carrier also ensures that the non-oxygen-producing purple photosynthetic bacteria stably and efficiently utilize light energy; therefore, the hybrid cell factory provided by the application is a high-efficiency microbial sewage treatment technology, and solves the technical problem of lack of high-efficiency microbial sewage treatment technology in the prior art.

The utility model relates to the technical field of ozone preparation, concretely to a vertical installation anti -stringing slide -down fixed support device of ozone generator glass electrode tube, including ozone generator cylinder, ozone generator cylinder top end is provided with ozone generator cylinder top cover plate, ozone generator cylinder bottom is provided with ozone generator cylinder bottom plate, ozone generator oxygen gas inlet port is provided with in the ozone generator cylinder right side upper portion, ozone generator ozone outlet port is provided with in the ozone generator cylinder left side lower portion. The utility model four fluorine fixed support device adopts ordinary four fluorine material to make, and the volume is smaller, and the cost is not high, and the dosage is less, and it is easy to process and make, and the installation is very convenient, can guarantee that glass electrode generating tube safe and efficient stable operation, saves time and worries, while greatly guaranteeing glass electrode generating tube safe and stable operation, the installation maintenance cost expense is less, and the enterprise saves the branch and creates the income and increases the benefit.

The utility model relates to the technical field of water quality detection, in particular to a water quality detection system. The system comprises a PH detection probe, a PH value signal amplification conditioning circuit and a processor, the PH detection probe adopts a PH composite glass electrode, and the PH value signal amplification conditioning circuit comprises a pre-amplification circuit and a post-stage translation circuit. The pH composite glass electrode is adopted, a high-performance operational amplifier CA3140 is matched to serve as a pre-amplifier, an operational amplifier LM741 serves as a post-amplifier, weak pH signals can be accurately amplified and processed, and therefore the detection precision is remarkably improved.

The impedance of an electrode can be measured more simply and accurately, in a pH measurement apparatus using a glass electrode. A measurement apparatus (10) includes a measurement unit (161) that measures the impedance of an electrode to be measured having first and second terminals, and a controller (11). The measurement unit (161) includes an operational amplifier having first and second input terminals and an output terminal, and a feedback resistor, which is a variable resistor, having a third terminal connected to the output terminal, and a fourth terminal connected to the first input terminal. The controller (11) acquires, in a state of the first input terminal connected to the first terminal, a measurement value of the impedance of the electrode to be measured, based on a voltage applied to the second terminal, the potential of the output terminal, and a resistance value of the feedback resistor.

The utility model belongs to the technical field of sterilization beauty instrument, and disclose a kind of skin sterilization beauty instrument of electricity storage type, including beauty instrument, the bottom of beauty instrument is provided with glass electrode tube, the inside of beauty instrument is provided with the elastic clamp block located in the outside of glass electrode tube, the bottom end of beauty instrument is provided with waterproof assembly, wherein, the beauty instrument includes shell, the bottom of shell is clamped with bottom cover.The utility model is provided with baffle and press bar, the elastic recovery of spring is merged in connecting rod by the driving of two baffles, and then the rubber strip on the two baffles is staggered together in the merging process, and then the top block on one side baffle will extrude press bar, drive press bar to move downward, and press bar is pressed to the rubber strip staggered together, to form good sealing effect between the two baffles closed together, so that it has good waterproof effect, to avoid internal electronic components from being damaged.

The present invention relates to the field of conductive materials and electrochromic technology, and in particular to a method for preparing a conductive material modified material layer, a conductive glass electrode, a conductive glass and a dynamic window. The preparation method comprises the following steps: performing plasma treatment, silanization reaction and polymerization reaction on indium tin oxide conductive glass, and finally adsorbing palladium ions as a catalyst through a polymer layer, thereby forming a more uniform catalyst layer on the surface, thereby effectively reducing the voltage difference between the center and the edge of the Pd-ITO conductive layer, thereby achieving a good metal deposition effect, and being able to well realize the transparent and opaque state conversion, and uniform and rapid deposition of metals at the center and the edge. In addition, the problems of raw material agglomeration and instability can be avoided, and the method has the advantages of low raw material cost, short preparation time, high preparation efficiency, simple and fast process, and is conducive to commercialization. The method can be well applied as an electric glass electrode and applied to the preparation of conductive glass and dynamic windows.

The water quality detector mounting support and cleaning device comprises a mounting assembly and a cleaning assembly, the mounting assembly comprises a first flange end, a second flange end, a ball valve element and a rotating shaft, the first flange end is in butt joint with the second flange end, and the cleaning assembly comprises a first ball valve, a second ball valve, a third ball valve and a fourth ball valve. According to the utility model, the mounting component forms the mounting bracket of the water quality detector and is used for mounting the PH glass electrode of the water quality detector, and the cleaning component forms the cleaning device of the water quality detector and is used for cleaning the PH glass electrode of the water quality detector. The PH glass electrode of the water quality detector can be calibrated and cleaned without dismounting a passage by matching with the mounting assembly, the calibration efficiency is greatly improved, and meanwhile, the problem that a solution in a pipeline is influenced by cutting off and recovering the pipeline is avoided.

The application discloses a force feedback type MEMS accelerometer based on a silicon Bragg grating F-P cavity and a manufacturing method, and belongs to the technical field of microelectromechanical systems. The force feedback type MEMS accelerometer comprises a silicon-based F-P cavity MEMS sensitive structure and a glass electrode substrate. The silicon-based F-P cavity MEMS sensitive structure comprises a flexible beam, a mass block, a common anchor point, a peripheral anchor point, a Bragg grating F-P sensitive cavity, a signal transmission optical fiber and a driving comb tooth. The glass electrode substrate comprises a glass substrate and an electrode. The silicon-based F-P cavity MEMS sensitive structure converts horizontal axis input acceleration into displacement of the mass block, causes the cavity gaps of a pair of oppositely arranged F-P sensitive cavities to oppositely drift, causes opposite transformation of F-P cavity interference light signals, and realizes high-precision differential detection of acceleration. The force feedback type MEMS accelerometer has the advantages of high sensitivity, strong common mode error resistance, large dynamic range and good long-term stability.

The present invention discloses a photoelectrochemical biosensor for detecting Cyfra21-1 and its preparation method. The biosensor comprises a titanium carbide / graphite-like carbon nitride / cadmium selenide quantum dot nanocomposite fixed to the surface of an FTO glass electrode. A probe sequence is fixed to the surface of the nanocomposite. The probe sequence partially binds to a single-stranded nucleic acid sequence, which is connected to a signal amplification factor via its terminal modification group. The present invention achieves detection of Cyfra21-1 using a photoelectrochemical biosensor, which is simple, highly sensitive, and easy to operate.

The invention discloses a force feedback type MEMS accelerometer based on a silicon Bragg grating F-P cavity and a manufacturing method, and belongs to the technical field of micro-electro-mechanical systems. The force feedback type MEMS accelerometer comprises a silicon-based F-P cavity MEMS sensitive structure and a glass electrode substrate, wherein the silicon-based F-P cavity MEMS sensitive structure comprises a flexible beam, a mass block, a common anchor point, a peripheral anchor point, a Bragg grating F-P sensitive cavity, a signal transmission optical fiber and driving comb teeth; the glass electrode substrate comprises a glass substrate and an electrode; the silicon-based F-P cavity MEMS sensitive structure converts the horizontal axis input acceleration into the displacement of the mass block, so that the cavity gaps of the oppositely arranged F-P sensitive cavities generate reverse drifting, the F-P cavities are triggered to interfere with the inverse transformation of optical signals, and the high-precision differential detection of the acceleration is realized. The force feedback type MEMS accelerometer has the advantages of high sensitivity, strong common mode error resistance, large dynamic range and good long-term stability.

A high-frequency electrotherapy device for promoting the healing of chronic, non-healing wounds, comprising: a signal generation module configured to generate a high-frequency alternating electrical signal in the range of 1.0 MHz to 1.8 MHz with a waveform selected from sinusoidal or pulsed sinusoidal profiles; a power amplification circuit electrically coupled to the signal generation module and configured to boost the signal to a therapeutic voltage in the range of 200 V to 500 V RMS; a dielectrically coated glass electrode containing a noble gas selected from neon, argon, or xenon, the electrode being shaped for direct surface application to skin wounds and being removably coupled to the output of the power amplification circuit via a high-voltage coupling capacitor; a microcontroller-based feedback system configured to monitor skin impedance in real time and dynamically modulate output amplitude and treatment duration to maintain local tissue exposure within predefined bioimpedance and thermal safety thresholds; a safety locking mechanism comprising a capacitive proximity sensor embedded in the electrode rod, wherein signal output is only permitted upon proven contact with human skin within a calibrated pressure and proximity range; and a programmable user interface configured to execute wound-specific treatment protocols that include predefined exposure durations, modulation frequencies, and rest intervals optimized for diabetic ulcers, pressure ulcers, and post-operative wounds.

The utility model provides a PH tester for water-based ink production, which comprises a PH tester main body, and a testing end, namely a glass electrode, is mounted on a testing protective head integrally arranged on the PH tester main body; a thread arranged on the surface of the testing protective head is meshed with the locking cylinder, and the detachable stirrer is limited on the testing protective head; a display main panel and a control button are arranged on the surface of the PH tester main body, and an auxiliary panel is arranged at the upper end of the display main panel; the sealing cylinder is allowed to be engaged with a thread arranged on the surface of the testing protective head and wraps the testing protective head; according to the utility model, the printing ink is effectively stirred in the test, the test end is ensured to be uniformly contacted with the printing ink, and the measurement accuracy is improved. The detachable stirrer is convenient to operate and clean, continuous and accurate testing is guaranteed, the service life of the instrument is prolonged, the size of the instrument is reduced due to the detachable design, and the instrument is convenient to carry. And the inclined stirring plate below the stirring leather disc efficiently stirs the ink and does not interfere with the test assembly, so that the test convenience is improved.

The utility model discloses a pH value detector adopting an ion electrode method, and relates to the field of acid-base detection. The device comprises a detector, an electrode supporting and measuring assembly is installed on the detector, the electrode supporting and measuring assembly comprises a supporting rod, a PH glass electrode and a rotating ring block, the PH glass electrode is arranged in the supporting rod, the supporting rod is used for supporting the PH glass electrode, the rotating ring block is rotatably connected in the supporting rod, the supporting rod is fixedly connected in the rotating ring block, and the supporting rod is fixedly connected in the rotating ring block. The PH glass electrode is slidably connected into the supporting rod, the rotating ring block drives the PH glass electrode to rotate circumferentially, and the supporting rod is used for adjusting the distance between the PH glass electrode and the circle center. According to the device, the rotating ring block capable of rotating is arranged, so that a PH glass electrode can uniformly stir a solution in a test cylinder, and meanwhile, the distance between the PH glass electrode and the circle center is adjusted through the auxiliary sliding groove, so that the device is suitable for test cylinders with different bottle opening sizes, and the stirring process is safe and effective.

The utility model discloses a pressure-resistant deep sea pH sensor based on an ion sensitive field effect transistor, which relates to the technical field of pH sensors and comprises a detection tube, a detection circuit board is arranged in the detection tube, a bottom tube is sleeved at the lower end of the outer wall of the detection tube through threads, and a salt bridge is arranged at the lower end of the inner wall of the detection tube. The bottom of the salt bridge is in contact fit with the bottom of the inner wall of the bottom pipe, a chip fixing pipe is fixedly embedded in the salt bridge, the upper end of the detection pipe is sleeved with a top pipe through threads, the upper end of the detection circuit board is located in the top pipe, the inner wall of the detection pipe is filled with sealant, and the outer side of the chip fixing pipe is sleeved with the sealant in a sealed mode. An external reference solution is filled between the chip fixing tube and the detection tube, and an electrode is connected to the interior of the external reference solution. The ion-sensitive field effect transistor is used for replacing a traditional glass electrode, so that the ion-sensitive field effect transistor-based seawater pH detection device has better voltage withstanding characteristic and can realize seawater pH detection under the condition of deep sea high pressure.

The invention discloses a hemispherical electrode base and a sintering method thereof, and the method comprises the following steps: a plurality of glass electrode assemblies are prepared, the plurality of glass electrode assemblies are in one-to-one correspondence with a plurality of electrode holes of the hemispherical electrode base, and each glass electrode assembly comprises an electrode needle and a glass column coaxially fixed on the electrode needle, the glass column is matched with an electrode hole in the semispherical electrode base, the glass electrode assembly is arranged in the corresponding electrode hole of the semispherical electrode base in a penetrating mode, the oxygen-free copper pipe is arranged in a center hole of the semispherical electrode base, brazing filler metal is arranged between the oxygen-free copper pipe and the hole wall of the center hole, and a semispherical electrode base pre-finished product is obtained; performing segmented sintering on the semi-spherical electrode base pre-finished product to obtain a semi-spherical electrode base; according to the method, glass insulation sealing sintering between the metal electrode and the metal base and brazing sintering between the oxygen-free copper pipe and the metal base can be completed through one-step sintering, the technological process is shortened, the cost is reduced, and meanwhile the yield is increased.

The invention relates to a method for determining chloride ions in a process of synthesizing methylhydrazine by a hydrazine hydrochloride methanol method, and belongs to the technical field of medical analysis. The method comprises the following steps: (1) precisely weighing a methylhydrazine reaction solution in a beaker, monitoring the pH value of the solution, respectively adjusting the pH value to 3-5, adding water to a constant volume, titrating by using a potentiometric titrator, inserting a glass electrode and a silver electrode into the solution, putting a rotor, starting a stirrer, titrating by using a 0.1 mol / L silver nitrate titrating solution, and measuring the concentration of the silver nitrate titrating solution; recording data; (2) calculating the chlorine content; according to the method, a potentiometric titrator is adopted, the pH value of the solution is adjusted to 3-5, the chlorine ion content can be rapidly and accurately detected in the presence of methylhydrazine and hydrazine hydrate, the method is rapid and simple to operate, high in sensitivity, good in repeatability and accurate in result, and the chlorine ion content of reaction liquid in multiple steps in the methylhydrazine synthesis process can be quantitatively detected.

Various examples are provided related to heat transfer enhancement using parametric electrostatic forcing. In one example, a heat transfer system includes a cell including fluids; an aluminum electrode clamped on a first side of the cell; and an ITO-coated glass electrode clamped on a second side of the cell. AC excitation of the aluminum electrode and the ITO-coated electrode produces AC electrostatic fields that resonate the fluids enhancing heat transfer across the cell. The heat transfer system can be operated in microgravity environments without gravity driven buoyancy.

The invention discloses a hemisphere electrode base composite sintering die and device.The die comprises an upper die, a lower die and a hemisphere electrode base, the hemisphere electrode base comprises a base body, a plurality of glass electrode assemblies located on the base body, a copper pipe and a brazing material ring arranged on the copper pipe in a sleeving mode, and the upper die and the lower die are each provided with a positioning groove matched with the base body; an overflow groove is formed in the groove bottom of the positioning groove, a plurality of insertion holes corresponding to the electrode needles are formed in the groove bottom of the overflow groove, and a containing through hole matched with the copper pipe is further formed in the groove bottom of the upper overflow groove; the base body is positioned in a space enclosed by the upper positioning groove and the lower positioning groove, the electrode needles are positioned in the corresponding upper and lower jacks, the copper pipe is positioned in the accommodating through hole, and the upper end part of the copper pipe extends out of the accommodating through hole. According to the method, one-step sintering of the hemispherical electrode base can be achieved, and compared with traditional two-step sintering, the technological process is shortened, the cost is reduced, and meanwhile the yield is increased.

The present invention discloses an inorganic multi-color transmission electrochromic film, coated glass and a design method. The coated glass comprises a glass substrate and the inorganic multi-color transmission electrochromic film stacked in sequence. The inorganic multi-color transmission electrochromic film comprises a dielectric layer (optionally added), a current collecting interference layer, a sacrificial layer, an electrochromic layer, and an electron blocking layer (optionally added) stacked in sequence. With the help of thin film optics principle to design transmittance and color coordinates, optimize the material selection and thickness parameters of each film layer, and further use large-area coating technology to prepare a multilayer film structure on a clean flat glass substrate, and finally a large-area coated glass product with multi-color transmission color and electro-control effect is obtained.

The invention discloses a reusable dual-mode aptamer biosensor for detecting clostridium perfringens, which is characterized by comprising a competitive chain CP-C, a CeO2 (at) PANI nano composite material, a closed bipolar electrode system and an aptamer functionalized magnetic bead probe. According to the invention, the high-affinity nucleic acid aptamer is combined with the specific extracellular electron transfer mechanism of the clostridium perfringens viable bacteria for the first time, a new viable bacteria detection sensing strategy free of nucleic acid extraction and target gene amplification is constructed, and the biosensor can specifically recognize the viable clostridium perfringens, and can be used for detecting the viable bacteria of the clostridium perfringens. According to the present invention, with the detection method, the false positive result caused by the existence of dead bacteria is avoided, the detection can be rapidly completed within 3 min, the voltage signal and the G value signal are mutually proved, the false positive or false negative of the single signal detection is effectively avoided, the detection limit is as low as 2.50 CFU / mL, and the excellent anti-interference ability in the complex food matrix such as chicken and milk is provided; the core element ITO glass electrode can be continuously and repeatedly used for 12 times, and the performance is not obviously attenuated.

To measure impedance of an electrode more easily and precisely by a pH measuring device using a glass electrode.SOLUTION: A measuring device (10) comprises a measurement section (161) for measuring impedance of a measured electrode having a first terminal and a second terminal, and a control section (11). The measurement section (161) has an operational amplifier having a first input terminal and a second input terminal, and an output terminal, and a feedback resistor that is a variable resistor having a third terminal connected to the output terminal and a fourth terminal connected to the first input terminal, and the control section (11) acquires a measurement value of impedance of the measured electrode on the basis of voltage applied to the second terminal, the potential of the output terminal, and the resistance value of the feedback resistor in a state in which the first input terminal is connected to the first terminal.SELECTED DRAWING: Figure 6

The utility model provides a device for measuring the pH value of a high-temperature corrosive solution, and relates to the field of devices for measuring the pH value of the solution, the device comprises a solution storage tank and a telescopic measuring mechanism, the telescopic measuring mechanism is arranged on the upper side of the solution storage tank, and by arranging the telescopic measuring mechanism, the pH value of the high-temperature corrosive solution can be measured through the steps of measuring, washing and the like during use. According to the device, the actual pH value of the solution can be measured on line, the measurement accuracy is improved, the time of each step can be set, the actual measurement condition can be reflected, after one measurement cycle, the washing water pipeline can be used for washing the pH measurement electrode, the glass film of the pH electrode can be well protected until the measurement of the next cycle, and the measurement accuracy is improved. Therefore, the glass electrode of the pH meter is prevented from being soaked in a high-temperature corrosive solution for a long time, the accuracy of pH measurement is improved, the service life of the electrode is prolonged, the solution is thoroughly isolated from a human body in use, and the safety of operators is protected.