300 results about "Cuvette" patented technology

A self-calibrating hybrid spectrophotometer comprises a receptacle for receiving the cuvette, first and second optodes that are configured to permit light to enter the cuvette, third and fourth optodes that are configured to permit light to leave the cuvette, and a controller that is configured to control delivery of light to one of the first and second optodes. Light entering one of the first and second optodes is received at the third and fourth optodes after having interacted with the turbid sample along different paths having different lengths. Measurements made at the third and fourth optodes in response to having illuminated both the first and second source optodes provide two slopes of optical transmittance as a function of path length. The spectrophotometer uses these slopes to identify a slope that is indicative of the absorption coefficient and the reduced scattering coefficient of the sample.

The invention is suitable for the technical field of silkworm cocoon shell oxidation resistance detection, and provides a silkworm cocoon shell ABTS free radical scavenging capability detection method, which is based on an ABTS free radical scavenging method, and comprises a multi-frequency ultrasonic device, the multi-frequency ultrasonic device performs three-stage gradient frequency ultrasonic treatment on silkworm cocoon shells, and the silkworm cocoon shells are subjected to three-stage gradient frequency ultrasonic treatment on the silkworm cocoon shells. The internal structure of the silkworm cocoon shell is converted into an aperture fiber structure from a compact fiber structure; the aperture fiber structure of the silkworm cocoon shell is in contact with the oxidant solution for mass transfer to form a reaction solution; the reaction liquid is placed in a quartz cuvette, and an ultrasonic transduction head and a temperature control module are arranged in the quartz cuvette; when the silkworm cocoon shell ABTS free radical scavenging capacity is detected, the quartz cuvette is placed in a spectrophotometer, and the silkworm cocoon shell ABTS free radical scavenging rate is obtained through the spectrophotometer.

The invention discloses a rapid detection device for pesticide residues in food and a use method of the rapid detection device, and relates to the technical field of food detection.The rapid detection device comprises a detector body and a box, a containing groove is formed in the inner side of the detector body, and one end of the detector body is fixedly connected with the box; one end of the detector main body is fixedly connected with a feeding mechanism, a cuvette is placed on the inner side of the feeding mechanism, and a pressing mechanism is arranged above a placing groove, so that the integrated design realizes full-process automation from sample pretreatment to detection, and effectively solves the problems of tedious operation and low efficiency of a traditional method; the overall detection efficiency is improved, and the method is particularly suitable for rapid screening of batch samples.

The invention provides a laser-induced plasma visualization experiment platform and a use method. The laser-induced plasma visualization experiment platform comprises a laser-induced breakdown module, an image acquisition module and a control module, the laser-induced breakdown module comprises a laser used for emitting pulse laser, an attenuator, a beam compressor and a beam splitter are sequentially arranged in the pulse laser propagation direction of the laser, and a reflector, an amplification objective lens and a cuvette are arranged in the propagation direction of a beam of pulse laser split by the beam splitter; the image acquisition module comprises a high-speed camera and an ICCD (Intensified Charge Coupled Device) camera, and a lens of the high-speed camera and a lens of the ICCD camera are both compared with the cuvette; the control module comprises a computer control submodule and a signal generator, the computer control submodule is in communication connection with the signal generator, the high-speed camera and the ICCD camera, and the signal generator is in communication connection with the laser, the high-speed camera and the ICCD camera. According to the platform, the whole dynamic process of induced breakdown of nanosecond pulse laser in liquid is visualized.

The invention relates to the technical field of material detection, and discloses an SPC floor production formaldehyde release colorimetric detection device which comprises a release chamber, an absorption chamber arranged on one side of the release chamber and a detection chamber arranged on one side of the absorption chamber, and a cuvette and an optical detection device located above the cuvette are arranged in the detection chamber. A liquid outlet corresponding to the cuvette is formed in one end of the absorption chamber, an electromagnetic valve is mounted on the liquid outlet, and a pressure cavity is formed above the release chamber; the device further comprises a residue removing mechanism. Through the lifting of the piston plate and the integrated mechanical linkage design of the release chamber, the absorption chamber, the detection chamber, the pressure cavity and the residue removal mechanism, the technical problems that in an existing colorimetric detection device, links such as gas conveying, absorption and residue removal are dispersed and independent and depend on multiple power sources are solved, cooperative and efficient operation of the whole formaldehyde detection process is achieved, and the detection efficiency is improved. The whole structure of the device is simplified, energy consumption is reduced, and precise synchronization of actions of all links is guaranteed.

The invention discloses an activated sludge fluorescence online detection device based on a flow cell, and relates to the field of activated sludge biomass detection.The activated sludge fluorescence online detection device comprises a fluorescence spectrophotometer and a fluorescence spectrophotometer sample table arranged on the fluorescence spectrophotometer, and the fluorescence spectrophotometer is connected with a processor through a cable; the fluorescence spectrophotometer sample table is connected with a sample cup through a guide pipe, activated sludge is arranged in the sample cup, and a peristaltic pump is arranged on the guide pipe; the activated sludge continuously flows through the fluorescence spectrophotometer sample table through the guide pipe for three-dimensional fluorescence detection through the peristaltic pump, sludge sedimentation in a traditional cuvette is avoided, measurement is simple and convenient, and on-line real-time monitoring of the activated sludge biomass can be achieved.

The invention discloses a portable yellow wine alcoholic strength detection device and a rapid detection method. The device comprises a power supply module, a light source module and a spectrograph, the power supply module is connected with the light source module and the spectrograph, a transmission detection module and an optical fiber adjustable attenuator are sequentially connected between the light source module and the spectrograph through optical fibers, and the transmission detection module is provided with a cuvette used for containing a yellow wine solution. An optical signal emitted by the light source module is emitted into the yellow wine solution in the cuvette, passes through the optical fiber adjustable attenuator and then is transmitted into the spectrograph, the spectrograph receives the signal, and the spectrograph is connected with a computer processing unit. The invention has the advantages of small size, light weight and strong portability; the detection speed is high, quantitative analysis of the alcoholic strength of the yellow wine can be completed in a short time, and the detection efficiency is greatly improved; besides, complicated sample pretreatment and professional operation skills are not needed, common personnel can operate the device through simple training, and meanwhile, the manufacturing cost and the use cost are greatly reduced.

The utility model discloses a double-channel iodine element automatic detector. The double-channel iodine element automatic detector comprises a base, a double-channel colorimetric mechanism, a stirring and uniform mixing mechanism, a sample placing mechanism, a material injection mechanism, a cuvette and a shell, the base, the two-channel colorimetric mechanism, the stirring and uniform mixing mechanism, the sample placing mechanism and the injection mechanism are all arranged in the instrument shell, the cuvettes are placed on the sample placing mechanism, the sample placing mechanism is arranged on the base, and one end of a hose of the injection mechanism is vertically aligned with the corresponding cuvette; the two-channel colorimetric mechanism comprises a blue light emitter, a photosensitive sensor and a mounting seat and is used for a colorimetric detection assembly, the stirring and uniform mixing mechanism is arranged below the cuvette so as to uniformly mix a sample and a detection reagent in the cuvette, the two-channel colorimetric mechanism is arranged below the sample placing mechanism, and the cuvette is located between the two-channel colorimetric mechanism. According to the detector, the detection efficiency of a traditional single-channel detector is greatly improved through the dual-channel design.

The invention discloses an anti-toppling water environment monitoring device, and relates to the technical field of chemical or physical analysis, the anti-toppling water environment monitoring device comprises a monitoring box, a leveling mechanism and an anti-toppling mechanism are sequentially clamped at the bottom of the monitoring box from top to bottom, and the leveling mechanism is used for detecting the horizontal degree of the monitoring box and stably placing the monitoring box; a fixing mechanism for adjusting the angle until the monitoring box is in a horizontal state is arranged below the anti-toppling mechanism; the horizontal state of the monitoring box can be guaranteed by placing the monitoring box on the placing disc after two times of supporting, horizontal stable supporting of the monitoring box is achieved, the situation that the liquid level of liquid in the cuvette is uneven and a light path deviates due to inclination is avoided, the accuracy of detection data such as absorbance is improved, and the detection accuracy is improved. And the arrangement of the structure is superior to that the monitoring box is horizontally adjusted after supporting, so that the problem that the existing monitoring box is difficult to adapt to different gradients and keep horizontal at the same time is solved, and meanwhile, the problem that the monitoring box falls due to unstable supporting in the adjusting process caused by the fact that the existing monitoring box is adjusted after supporting is solved.

The utility model relates to the technical field of cuvettes, and discloses a bubble-eliminating cuvette, which comprises a cuvette body used for placing a solution to be detected; the pouring box is movably connected to the opening of the cuvette body, the pouring box is provided with a liquid inlet through which a solution to be detected is poured, the end part of the pouring box is provided with a liquid outlet through which the solution to be detected flows out, and the liquid outlet is used for limiting the flow of the solution to be detected; the supporting block is arranged on the inner wall of the frosted glass of the cuvette body and is used for supporting the pouring box and shunting the to-be-detected solution flowing out of the liquid outlet. The cuvette has the effect of reducing the possibility that the to-be-detected solution generates bubbles in the cuvette.

A cuvette support groove is a cuboid-shaped cavity with an opening in the upper portion, light-transmitting openings are formed in the light-facing face and the backlight face of the support groove and used for allowing incident light to pass through, small square prisms are arranged at the four inner corners of the support groove, the four small prisms are consistent in size, one right angle of each small prism coincides with the right angle of the support groove, and the other right angle of each small prism coincides with the right angle of the support groove. The height of the small prism is equal to that of the support groove. And the distance between the two small prisms between the bracket groove light-facing surface and the bracket groove backlight surface is matched with the outer diameter between the two colorimetric light surfaces. And the inner diameter between the side surfaces of the two bracket grooves is matched with the outer diameter between the rough surfaces of the two cuvettes. According to the cuvette bracket groove provided by the utility model, the light surface of the cuvette is clamped by the four small prisms, and the rough surface of the cuvette is clamped by the two side surfaces, so that the cuvette is stably and vertically fixed on the bracket groove. Except the part contacted with the small prism, the smooth surface of the cuvette is not contacted and rubbed with the bracket groove in the plugging process, and the smooth surface is not abraded.

1. The name of the design product: colorimetric cup. 2. The use of the design product: for biochemical detection instrument. 3. The design points of the design product: in shape. 4. The picture or photo that best indicates the design points: perspective view 1.

Dissolving activity analyzer including an integrating cavity comprising a reflective inner wall or walls, and configured to receive a cuvette containing liquid sample. The integrating cavity comprises a light inlet port and a light outlet port, the light inlet port being configured to receive light from a light source and the light outlet port being configured to deliver light to a spectrometer. The dissolving activity analyzer is configured to operate in a diffusely reflecting mode in which light from the light source follows a light path from the inlet port into the integrating cavity, is incident onto the reflective inner wall or walls and is diffusely reflected, such that the light from the light source irradiates the liquid sample before being transmitted through the light outlet port and received by the spectrometer to provide an absorbance spectrum of the liquid or liquid matrix contained in the liquid sample.

Aspects are provided for a UV-Vis calibration solution, composed of a lanthanide and an ionic liquid. In particular, the UV-Vis calibration solution may contain 4 to 12% by weight of Holmium (III), dissolved in an aqueous chloride solution. The disclosure also includes a calibration standard created from this calibrated solution, by placing the solution in a cuvette and capping it. The disclosure additionally includes a method of using the calibration standard to obtain a UV-Vis spectrum in the wavelength range of about 250 nm to 700 nm.

1. The name of the design product: dry bath heater block. 2. The use of the design product: used for heating samples in test tubes and cuvettes, and also for drying empty test tubes and cuvettes. 3. The design points of the design product: in shape. 4. The picture or photo that best shows the design points: perspective view.

The present invention relates to an optical modulation system based on the interaction of two collinear light beams having different wavelengths passing through a cuvette containing a solution of Cs2SnI6, comprising a pumping laser emitter emitting a modulated pumping beam with a wavelength between 355 nm and 1550 nm and with a variable frequency; a test laser emitter emitting a continuous wave test beam at 633 nm and with a power limited to 10 mW; a beam splitter where the pumping and test beams are combined to strike on the cuvette; a pass filter that removes the signal from the pumping beam; a spatial analysis camera; a time / frequency analysis equipment with a photodetector, a commercial lock-in amplifier and an oscilloscope; and a signal generator.

The utility model discloses a transmission / reflection spectrum detection light path structure, which relates to the field of spectrum detection, and comprises an integrating sphere fixedly arranged on the left upper side in a shell; the object carrying cover is arranged on the top surface of the shell, and the object carrying cover is arranged right above the integrating sphere in a covering manner; the left side of the cuvette bracket is fixed at an outlet in the right side of the integrating sphere; the buckling cover is mounted on the top surface of the shell, and the buckling cover is positioned right above the cuvette bracket; the first heat dissipation cover is mounted on the right side of the cuvette bracket; the second heat dissipation cover is mounted at a left interface of the lower end of the integrating sphere; the spectrograph is fixedly mounted in the shell, and the spectrograph is connected with a right interface at the lower end of the integrating sphere through an optical fiber. According to the utility model, transmission and reflection spectrum detection can be simultaneously carried out, the reliability and stability of object detection can be effectively ensured, and the accuracy of a detection result is ensured.

The application discloses a method for detecting the concentration of dissolved CO in fermentation liquor. The method comprises the following steps: (1) preparing CO saturated aqueous solution, oxygen-free aqueous solution, sodium hydrosulfite solution as a reference solution and deoxygenated myoglobin solution; (2) preparing an absorbance-CO saturation standard curve; (3) sampling and detection: taking a sample from the fermentation liquor as a sample to be detected by a sampling device, injecting the sample to be detected into a cuvette, adding 2.5 mL of deoxygenated myoglobin solution in the cuvette in advance and sealing the cuvette, adjusting zero with the reference solution, detecting the absorbance of the cuvette containing the sample to be detected at a wavelength of 415-425 nm by a spectrophotometer, substituting the obtained absorbance into the absorbance-CO saturation standard curve obtained in step (2) to obtain the corresponding CO saturation, and then converting the CO saturation into the concentration of dissolved CO according to the known CO solubility. The detection method has the characteristics of taking and measuring immediately, rapidness and simplicity.

The invention belongs to the field of water pollution monitoring, and particularly relates to an online measurement method for petroleum in water, which comprises the following steps: step 1, water sampling: a trigger unit transmits the detected fluorescence intensity of the water surface to a control unit, and the control unit controls the water sampling frequency of a sampling pump in the water sampling unit according to the fluorescence intensity detected by the trigger unit; step 2, extraction: sending the water sample extracted by the sampling pump into a sample storage container, and extracting oil substances into an extraction reagent; step 3, separation: conveying into a separation container through a conveying pump; and 4, measuring, namely feeding the extraction reagent into a cuvette of a measuring unit for measuring the content of the oil substances. According to the design, a method of combining water surface early warning measurement and underwater quantitative measurement is adopted, pollution occurrence can be judged in time, and the content of underwater oil substances can be measured online, so that pollution sources can be conveniently fed back and controlled in time, and the timeliness of online water environment monitoring is guaranteed.

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 present application provides an oil analyzer, comprising a shell, a sample storage module, a detection chamber, a near-infrared spectrum analysis module, a sampling module and a temperature adjusting module. The shell has a first cavity, when multiple oil samples need to be detected, the multiple samples can be simultaneously accommodated in the first cavity through a sample support and a sample tube, and the first cavity is refrigerated or heated through the temperature adjusting module, so that the first cavity is at the same temperature as the detection chamber. The oil analyzer provided by the present application can perform constant temperature treatment on the samples in advance, so that the temperature of the samples reaches a stable state when the samples are temporarily stored in the first cavity. In this way, when detection is performed, the samples first enter a cuvette through the sampling module, and then the cuvette is moved to the detection chamber through the first telescopic rod. After the samples enter the detection chamber, they no longer need to wait, and the near-infrared spectrum analysis module can directly perform spectrum analysis on the samples, eliminating the waiting time and improving the detection efficiency.

A method of using an automatic chemical analyzer includes detecting in real-time abnormalities in a cuvette used with the analyzer and further detecting abnormal reaction conditions present in the cuvette used with the analyzer. Baseline signals are continuously updated and compared with subsequent signal recordings, as well as evaluating data within a given subsequent signal recording itself. Signal criteria are used when evaluating and comparing signal recording data and the analyzer will indicate or provide an alert where a detected abnormality in the cuvette or reaction condition is identified.

The utility model relates to an ultraviolet and visible spectrophotometer, which aims at solving the technical problems that the current cuvette is relatively tight in insertion, relatively large in friction force and not smooth in insertion, and comprises a spectrophotometer shell, a sample chamber, a turning cover, a cuvette groove and a cuvette, the sample chamber is arranged in the spectrophotometer shell; the flip cover is rotationally arranged on the spectrophotometer shell corresponding to the opening of the sample chamber; the cuvette groove is arranged at the bottom in the sample chamber; the plurality of cuvettes are respectively connected with the cuvette groove through a plurality of connecting structures; the connecting structure comprises a U-shaped plate and an abutting elastic piece. The U-shaped plate is arranged in the cuvette groove; the two abutting elastic pieces are arranged on the two sides of the bottom of an inner cavity of the U-shaped plate correspondingly. The cuvette is inserted into the inner cavity of the U-shaped plate, and the two sides of the bottom of the cuvette are matched with the two abutting elastic pieces in an abutting mode respectively. The cuvette has the advantages that the cuvette is inserted into the U-shaped plate, the inner cavity of the U-shaped plate has enough space, the abutting elastic pieces abut against and position the cuvette, and the cuvette is convenient to insert and position.

A turbidity meter and a method for cleaning the turbidity meter are provided. An example turbidity meter may include a cuvette designed to receive fluid, wherein the cuvette comprises a first end, a second end, and an internal surface. The turbidity meter may also include a cuvette cleaning blade positioned between the first end and the second end of the cuvette. The turbidity meter may further include a movement device designed to move the cuvette cleaning blade across the internal surface of the cuvette, wherein the cleaning blade is designed to be circumferentially rotated, vertically moved, or combinations thereof.

The utility model provides a cuvette auxiliary bracket for a photometer. The cuvette auxiliary bracket comprises a bottom plate, a cleaning frame and a plurality of bearing seats, the cleaning frame comprises two mounting plates, a cleaning channel is formed between the two mounting plates, and an avoiding notch is formed in each mounting plate. A mounting groove is further formed in the side wall, close to the cleaning channel, of the mounting plate, and a detachable cleaning piece is arranged in the mounting groove. A guide groove is further formed in the top face of the bottom plate, and the guide groove penetrates through the cleaning frame along the receding notch. And the bearing seat is movably arranged on the bottom plate, a guide column is arranged at the bottom of the bearing seat, and the guide column is arranged in the guide groove in a sliding mode. A bearing groove is formed in the top face of the bearing seat, and taking-out notches communicated with the bearing groove are formed in the front side wall and the rear side wall of the bearing seat. According to the cuvette auxiliary support for the photometer, the side wall of the optical surface of the cuvette can be protected, and the side wall of the optical surface can be wiped.

1. The name of the design product: blood coagulation cup. 2. The use of the design product: for placing analysis reagent and analyzed sample on coagulation analysis instrument. 3. The design points of the design product: in shape. 4. The picture or photo that best shows the design points: perspective view 1.

The application belongs to the technical field of neutron scattering, and discloses a sample rotating device. The sample rotating device is used for rotating a cuvette containing a liquid to be detected during a neutron experiment on the liquid. The sample rotating device comprises a supporting seat, a sample fixing assembly and a driving assembly. The sample fixing assembly comprises a rotating cylinder, and a worm wheel is arranged on the outer side of the rotating cylinder. The driving assembly comprises a driving motor and a worm. The driving motor is in transmission connection with the worm wheel through the worm. The worm is rotatably arranged on the supporting seat. The driving motor drives the worm to rotate. The worm drives the worm wheel to rotate and further drives the rotating cylinder to rotate. The rotating cylinder is fixedly installed with the cuvette. When the rotating cylinder rotates, the cuvette can rotate with the center of the disc surface of the cuvette as the axis. The liquid sample in the cuvette can be prevented from precipitating or being non-uniform in density during long-time measurement, so that the solute in the liquid sample can be kept in a uniformly dispersed state, and the effectiveness of small-angle neutron scattering experimental data can be ensured.

The invention discloses a low-energy-consumption wavelength and intensity composite standard lamp which structurally comprises a deep ultraviolet module, a visible-infrared module, a micro-channel heat dissipation structure and a rare earth sharp line calibration unit. The core innovation is that a rare earth sharp line calibration unit is integrated on the basis of a standard intensity lamp, that is, a cuvette filled with a Re (Er-Ho-Dy) (NO3) 3 or Re (Er-Ho-Dy) (ClO4) 3 ternary mixed solution is additionally arranged at a light source outlet. The device has the beneficial effects that the device can be switched to a sharp line mode on the basis of an intensity calibration function to realize high-precision wavelength calibration, is compact in integration, and adapts to a portable detection scene.

The invention relates to a NMR spectrometer (10) comprising a permanent magnet arrangement (11) which comprises a measurement volume (12) and a bore (13) for introducing a NMR measurement sample in a sample cuvette (14) and a HF coil (15) outside a cylindrical temperature regulation tube (16) which comprises a continuous annular gap (17) through which a temperature regulation gas can be conducted through a gas inlet (18), characterized in that on the end opposite to the gas inlet a movable holding device (19) is mounted which in a first operating position does not touch the sample cuvette, in a second operating position holds the sample cuvette force-locked and / or form-locked on the outer circumference of the sample cuvette with an axially acting force or static friction F f in its measurement position and in a third operating position releases the sample cuvette for removal and in the second operating position applies F f >F Stau -F Gewicht , wherein F Stau denotes the buoyancy force generated by the dynamic pressure of the temperature regulation gas flowing onto the sample cuvette and F Gewicht denotes the gravitational force of the sample cuvette. By this it is possible to avoid the problems of the known generic arrangement by the dynamic pressure of the temperature regulation gas.

The application discloses a kind of anti-toppling water environment monitoring devices, it is related to chemical or physical analysis technical field, including monitoring box, monitoring box bottom is sequentially clamped with leveling mechanism and anti-toppling mechanism for monitoring box detection its level and stable placement from top to bottom, anti-toppling mechanism is equipped with the fixed mechanism for adjusting angle until monitoring box is horizontal state;The horizontal state of monitoring box can be guaranteed by placing monitoring box on the placing disc after being supported twice, the horizontal stable support of monitoring box is realized, the inaccuracy of absorbance detection data is improved, the liquid surface in cuvette is not flat, the light path is deviated due to inclination is avoided, and the setting of the structure is superior to supporting and then adjusting the level of monitoring box, the problem that existing monitoring box is difficult to simultaneously guarantee to adapt to different slopes and keep horizontal is solved, the problem that existing support and then adjustment leads to unstable support during adjustment process and causes monitoring box to fall is solved.