588 results about "Cuvette" patented technology

The invention relates to the technical field of total phosphorus detection, in particular to a method for determining total phosphorus in water, which comprises the following steps: 1) digestion treatment: adding an oxidant into a water sample to be detected, and then performing microwave digestion treatment to obtain digested water; a molybdate reagent is added into the digested water, then an improved ascorbic acid solution is added, a chromogenic reaction is completed at the set temperature, and the improved ascorbic acid solution is obtained by mixing an ascorbic acid solution and sodium ethylene diamine tetracetate; measuring the concentration: measuring the absorbance value of the obtained color development product by using a spectrophotometer and a long-optical-path cuvette; and drawing a standard curve: using a phosphorus standard solution as a quality control sample, adding a plurality of calibration points in a low-concentration interval of 0.0-0.1 mg / L, carrying out colorimetric determination, and establishing quadratic equation fitting according to absorbance and concentration so as to determine the total phosphorus content of the water sample to be detected, and the method has the advantages of high sensitivity and good accuracy in total phosphorus testing.

The invention discloses tea polyphenol component detection equipment for jasmine tea and a detection method thereof. The tea polyphenol component detection equipment comprises a spectrophotometer host, and the lower end of the spectrophotometer host is fixedly connected with a bottom support bin. Through the arrangement of the grinding box and the crushing knife rest, in the use process, jasmine tea needing to be detected is placed in the grinding box, then the pressing frame is assembled, through the pressing frame and second filter cloth, the movable space of the jasmine tea is limited, the jasmine tea is made to be close to the crushing knife rest, and therefore the crushing speed is increased; a solvent is placed in the grinding box, separation of tea polyphenol is accelerated through rotation of the crushing knife rest, meanwhile, sufficient extraction of the tea polyphenol can be guaranteed, the solution is directly filtered through the second filter cloth, the solution is taken out through the suction pipe and placed in the cuvette, then the cuvette is placed in the sample chamber, detection can be conducted, overall use is simple, and the detection efficiency is high. The device can directly measure on site, integrates components required by detection into a whole, and is convenient to carry.

The invention relates to a method for efficiently and accurately measuring the content of a urease inhibitor in a stabilized fertilizer. The method comprises the following steps: preparing a sample solution; carrying out digestion treatment on the sample solution; carrying out chromogenic reaction; measuring the absorbance of the blue complex by using a 3cm cuvette under the wavelength of 710 nanometers by using a spectrophotometer; and calculating the content of the total effective components of the urease inhibitor in the sample according to a relational expression between the phosphorus content and the absorbance. According to the invention, accurate measurement of the content of the target component can be realized through chemical digestion, chromogenic reaction and photometric analysis, the measurement method is simple and reliable, the measurement method shows significant advantages in the aspect of urease inhibitor content measurement, and powerful technical support can be provided for quality control and performance evaluation of related products. Compared with the existing liquid chromatography, the method has the advantages that the cost advantage is obvious, the acquisition cost and the maintenance cost of a liquid chromatograph and matched equipment thereof can be saved, accurate determination can be carried out only by using a conventional detection appliance, and the method has good universality.

The invention relates to an analysis preparation cuvette rack unit (10;10′) comprising a cuvette platform (20) for uprightly holding a sample cuvette (100;101) comprising a cuvette identification (111;111′) on a sample cuvette information carrier (110;110′). The cuvette rack unit (10; 10′) comprises a platform balance for determining the weight of the sample cuvette (100; 101) held by the cuvette platform (20), a reading device (16) for reading the unique cuvette identification (111; 111′) of the sample cuvette information carrier (110; 110′), a sample cuvette information carrier (110; 110′) and a sample cuvette information carrier (110; 110′). cuvette information carrier (110) of the sample cuvette (100;101) held by the cuvette platform (20), and an analysis preparation controller (14;14′) informationally connected to the platform scale (12) and the reading means (16) for storing and transmitting a sample cuvette weight value together with the associated read cuvette identification (111;111′) to a separate remote analysis unit (60) which performs a quantitative analyte analyser (66). The cuvette rack unit (10;10′) does not comprise an analyte analyser.

The invention discloses an optical fiber three-dimensional refractive index measuring system and method based on cylindrical objective lens interference. The system comprises a laser light source, a collimating and beam expanding lens group, a beam splitter prism, a rectangular prism, a reflector, a cylindrical objective lens, a tube lens, a CCD, a computer, a PZT, an electric rotating table, a cuvette and an optical fiber to be measured. According to the refractive index reconstruction method based on the system, an interference signal formed by a laser beam through a cylindrical objective lens is received by a CCD, an optical fiber projection phase diagram under full sampling is obtained by rotating the optical fiber at equal angles within the range of 1800, and three-dimensional reconstruction of the refractive index of the optical fiber is achieved by combining an optical calculation tomography back projection algorithm. The system uses a cylindrical objective lens different from a spherical objective lens, can effectively compensate spherical aberration and match optical characteristics of the optical fiber, improves imaging quality, realizes high-precision three-dimensional reconstruction of the refractive index of the optical fiber, and improves measurement precision of the fiber core diameter of the optical fiber. The method is suitable for high-precision nondestructive measurement of various types of optical fiber structures and internal defects, and is easy to apply.

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.

Aspects of the present disclosure include cuvettes used in photometric assays. Aspects of the present disclosure further include a cuvette module using the cuvette for performing photometric assays. Aspects of the present disclosure further include systems and methods for performing photometric assays using the cuvette.

The invention belongs to the technical field of soil cyanide determination, and particularly relates to a soil cyanide determination device and a determination method thereof. Comprising a spectrophotometer which is provided with an end cover; a plurality of cuvette grooves are formed in the spectrophotometer and located below the end cover, and a cuvette can be placed in each cuvette groove; the soil cyanide measuring device further comprises a moistening and wiping unit; according to the spectrophotometer provided by the invention, the rinsing and wiping unit is arranged on the spectrophotometer, the rinsing and wiping unit can automatically rinse the interior of each cuvette by using the tested reagent, the tested reagent is injected again after rinsing, then the smooth surface of each cuvette is wiped, and finally each cuvette is automatically fed into the cuvette groove, so that the test accuracy is improved. After detection, the cuvettes in the cuvette grooves are unloaded; the automation degree is improved, and time and labor are saved.

The invention discloses a radiotherapy system, an auxiliary system and method for evaluating free radical damage and application thereof, a tube body of a cuvette of the auxiliary system comprises side surfaces, a top surface and a bottom surface, the top surface is provided with an opening matched with a shading cover, and the side surfaces comprise a first side surface, a second side surface, a third side surface and a fourth side surface; one end of the first optical fiber is connected with the laser assembly, and the other end of the first optical fiber is connected with the first side surface; the irradiation assembly is arranged on one side of the top surface; the fluorescent light filter is arranged on the third side surface or the fourth side surface; one end of the second fiber is connected with the fluorescent filter, and the other end of the second fiber is connected with the luminosity assembly; the chamber is used for accommodating the cuvette and the fluorescent light filter; for FLASH radiotherapy, the real-time accurate detection of the fluorescence intensity can be realized by optimizing the detection environment, and a reliable platform is provided for free radical damage assessment.

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 utility model discloses a tool for rapid detection of an irradiation chemical dosimeter, which comprises a bottom plate, two sides of the bottom plate are provided with vertical plates, two fixing plates are arranged between the two vertical plates, one side of each fixing plate is provided with a plurality of test tube fixing holes which are arranged at equal intervals, test tubes are inserted into the test tube fixing holes, and the test tubes are fixed on the bottom plate. A plurality of cuvette fixing holes which are distributed at equal intervals are formed in one side, far away from the test tube fixing hole, of the fixing plate, cuvettes are arranged in the cuvette fixing holes, a cover plate is arranged above the cuvettes, a sealing block is arranged below the cover plate, two convex blocks are arranged on each of two sides of the sealing block, and clamping grooves matched with the convex blocks are formed in the inner walls of the cuvettes. The tool can rapidly detect the irradiation dose of the stoichiometric agent after irradiation, and the dose meter after irradiation is directly put into the spectrophotometer, so that the operation is extremely simple and convenient, the subsequent pipetting operation is not needed, the operation error is reduced, and the accuracy and consistency of the detection result are ensured.

The invention discloses a soil heavy metal monitoring device based on spectrum deep learning and an evaluation method, the soil heavy metal monitoring device comprises a plurality of column leaching containers, the plurality of column leaching containers are sequentially connected in series through hoses to form a percolation passage, the front end of the percolation passage is connected with a water outlet bucket through a peristaltic pump, and the rear end of the percolation passage is connected with a water inlet bucket; a branch pipe is led out of the hose between every two adjacent column leaching containers through a three-way pipe, the multiple branch pipes are connected with the multiple collection bottles respectively, and electrochemical detection assemblies are arranged on the collection bottles; the plurality of cuvette brackets are respectively arranged on the plurality of hoses, each cuvette bracket is connected with the optical fiber spectrometers through optical fibers, and the plurality of optical fiber spectrometers are electrically connected with the computer; the scheme aims at providing an effective evaluation method aiming at the soil pollution problem of a heavy metal high background area, the concentration of harmful heavy metal elements in the soil is remarkably reduced, the soil quality is improved, and important technical support and theoretical basis are provided for soil remediation.

The present invention provides a feed enzyme preparation activity detection instrument, and particularly relates to the technical field of detection equipment, the feed enzyme preparation activity detection instrument comprises a detection box and a detection assembly arranged in the detection box, one side of the top surface of the detection box is provided with a display and a controller, and the center of the top surface of the detection box is provided with a placement port. The detection assembly comprises a transmitting device and a receiving device which are arranged on the two sides of the interior of the detection box respectively, and two sealing plates are arranged between the transmitting device and the receiving device, so that the cuvette can be sealed after the cuvette is placed by a detector and the sealing cover is closed; and then the transmitting device and the receiving device are driven to approach to each other for detection, so that unnecessary pollution on the surfaces of the transmitting device and the receiving device due to accidental contact between the detecting personnel and the transmitting device and the receiving device in the process of manually placing the cuvette is avoided, and the detection effect of the transmitting device and the receiving device during detection operation is ensured.

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 discloses a method and a system for calibrating a light measuring point of a full-automatic biochemical analyzer based on a cuvette delay strategy. The method comprises the following steps: configuring a cuvette to be detected; setting a plurality of different delay times for the same cuvette based on the cuvette delay strategy; obtaining the distance from the light measuring point of the current cuvette to the optical detection position during detection, and selecting optimized delay time according to a distance comparison result to carry out delay detection so as to obtain a stable AD value; in the testing process, each cuvette passes through an optical detection position, absorbance data currently read by each cuvette is used as a photometric point, a time point for reading the data of the photometric point after a current cuvette serial number optocoupler is triggered is used as a delay point, the jumping photometric point is identified, and different delay times are selected; the problem that the photometric point of the full-automatic biochemical analyzer jumps is solved by delay adjustment of the cuvette, so that the originally unstable photometric point can read stable data, and the detection result is more accurate and real.

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 utility model discloses a cuvette assembly for a multi-wavelength fluorescence spectrometer, and relates to the technical field of water quality and environmental protection detection. The cuvette comprises a cuvette groove body, a cuvette is arranged in the cuvette groove body, a water sample is filled in the cuvette, and a plurality of groups of LED excitation light sources are arranged on the inner wall of the cuvette groove body. By changing the direction of a light path and combining the improvement of the cuvette, the problem of position conflict of light sources with different wavelengths is solved, the distance from an LED excitation light source to a water sample and the distance from emitted light penetrating through the water sample to a detector are kept consistent, the accuracy of a detection result is further guaranteed, and the defects that a traditional multi-wavelength fluorescence spectrum structure is difficult to realize and the detection accuracy is low are overcome. In the prior art, the light transmittance and flatness of the bottom of the cuvette need to be ensured due to the fact that a detector is arranged at the bottom of the cuvette, and preferably, flat and smooth quartz glass with the thickness of less than 1mm can be adopted to ensure the sensitivity and accuracy of detection.

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 relates to the technical field of colorimetric analysis instruments and equipment, and particularly discloses a portable multi-light-source colorimetric analyzer and method based on an intelligent mobile platform, and the analyzer comprises colorimetric analysis software which is used for setting collection parameters, collecting sample images and analyzing sample data; a sample solution is arranged in the sample analysis darkroom module assembly, and the sample analysis darkroom module assembly is used for shielding external light interference; the light source module provides a light source for the colorimetric analyzer and is convenient for collecting sample color parameters; the cuvette is used for containing a sample solution; the intelligent mobile equipment is used for carrying out information acquisition on the sample; and the light path lens module is used for collimating and filtering the light source. The color signals in the sample detection process are captured by the camera of the intelligent mobile equipment, and the chromaticity information is quantified in combination with corresponding colorimetric analysis software, so that on-site, real-time, rapid and quantitative sample parameter detection can be realized, the detection operation difficulty in a laboratory is reduced, the method is suitable for multi-model Android intelligent equipment, and the detection efficiency is improved. And detection personnel can conveniently go out for operation.

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 invention belongs to the technical field of mRNA production and manufacturing, and discloses an RNA reaction bag and an IVT reaction monitoring method. The RNA reaction bag provided by the invention comprises a bag body and a detection assembly, the bag body comprises a flexible part and a transparent hard part, the transparent hard part is structured to form a detection vessel, and in the IVT reaction process, the detection vessel is used as a cuvette to receive an IVT reaction liquid, and the detection assembly is used for detecting the IVT reaction liquid. Meanwhile, optical detectors arranged on the two opposite sides of the detection vessel are used for detection, so that detection of the IVT reaction liquid in the detection vessel can be achieved, real-time relevant information of reaction raw materials and / or products in the IVT reaction liquid is obtained, and pH value information and temperature information detected by a pH detector and a temperature detector are matched; the real-time monitoring of the IVT reaction process in the RNA reaction bag is realized, the reaction condition can be adjusted in time, and the raw materials can be supplemented in time to maintain an ideal reaction state, so that the amplification of the IVT reaction is realized, the large-scale production of RNA is realized, and the method has a good application prospect.

The invention discloses a method for measuring the concentration of a particulate matter suspension, and belongs to the technical field of particulate matter suspension detection and analysis. The measuring method comprises the following steps that a to-be-measured particulate matter suspension is poured into a cuvette, the OD value of the to-be-measured particulate matter suspension under different incident wavelengths is measured, and the OD value weight of the minimum wavelength is w1 = O1 / (O1 + pO2M + qO3N); the OD value weight of the intermediate wavelength is w2 = pO2M / (O1 + pO2M + qO3N); the OD value weight of the maximum wavelength is w3 = qO3N / (O1 + pO2M + qO3N); the final OD value of the particulate matter suspension is O = w1O1 + w2O2 + w3O3; and determining the concentration of the particulate matter suspension according to the final OD value. According to the measurement method, the problem of low OD reading at high concentration is solved, and the problem of jumping between dilution data and non-dilution data is also avoided.

An in-vitro diagnostic (IVD) analyzer 200 comprising an optical detection unit 217 comprising a cuvette 214 for the optical measurement of a biological sample 2, 2' is herein disclosed. The IVD analyzer 200 further comprises a piezo actuator 218 arranged on one side of the cuvette 214 configured to transmit ultrasonic waves 254, 254' through the cuvette 214, a piezo receiver 218' arranged on the opposite side of the cuvette 214 configured to receive ultrasonic waves 255, 255', 255" transmitted through the cuvette 214, and a controller 250 configured to operate according to a lysis operating mode L and according to an air-detection operating mode AD. According to the lysis operating mode L the piezo actuator 218 is configured to transmit ultrasonic waves 254' through the cuvette 214 for disrupting cellular particles contained in the biological sample 2. According to the air-detection operating mode AD the piezo actuator 218 is configured to transmit ultrasonic waves 254 through the cuvette 214 and the controller 250 is configured to correlate changes in amplitude and / or shifts of phase of the ultrasonic waves 255, 255', 255" received by the piezo receiver 218' relative to reference values with an eventual presence and quantity of air 3 in the cuvette 214, in order to determine if the optical measurement of the biological sample 2, 2' is affected by the presence of air 3. A respective automated method of operating the in-vitro diagnostic analyzer 200 in order to determine if the optical measurement of the biological sample 2, 2' is affected by the presence of air is also disclosed.

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.

An aspect of the present invention relates to a cuvette for a photometric measurement of a sample, the cuvette comprising: a sample container; and at least one photometer. Further aspects of the present invention relate to a method for a photometric measurement of a sample, a system for a photometric analysis of a sample and a method for a photometric analysis of a sample.