63 results about "Laboratory testing" patented technology

The invention relates to the technical field of wheel performance testing, in particular to a laboratory testing method and system for representing the gripping performance of tire tread rubber on a wetland epoxy floor. According to the method, a thin water film of 10-100 microns is stably maintained on a representative epoxy substrate through online thickness measurement and closed-loop film control, a mu-slip rate curve is obtained at the slip rate of 0.1-10%, mu 0, mu max, delta mu and mu 10% are extracted and are subjected to in-situ fusion with British pendulum BPN under the same substrate and the same film thickness, and a wetland epoxy comprehensive grip index (WEGI) is formed. According to the method, the repeatability under the thin water film working condition and the comparability between laboratories are remarkably improved; embodiments show that the introduction of a small amount of LSBR and fine cutting grooves can synchronously improve [mu] max and BPN, while the repeatability of uncontrolled film, non-representative substrate or real vehicle test is poor. The method is suitable for rapid optimization of a new energy automobile tire tread formula.

The invention discloses a laboratory inspection method based on semantic enhancement and related equipment. The method comprises the following steps: acquiring received first text information; the first text information comprises key event information actively fed back to a system inquiry experimenter in a current inspection process stage and natural voice description information of the experimenter collected in real time; performing forward semantic prediction and backward semantic verification on the first text information to obtain an event representation vector of the laboratory; the event representation vector is used for representing a laboratory event extracted from the first text information; determining event boundaries of the laboratory events and performing multi-level classification and attribute extraction on the laboratory events to obtain processed laboratory events; and performing event sequence continuity verification on the processed laboratory event, and if the verification is passed, generating a laboratory log corresponding to the processed laboratory event. The method can be widely applied to the technical field of natural language processing.

The invention provides a climate laboratory snow falling and raising environment simulation system, which belongs to the technical field of laboratory testing, and comprises a snow making device for making snow, a snow making cabin for accommodating the snow making device, an experiment cabin for accommodating a to-be-tested piece, and a snow conveying device for conveying snow made by the snow making device to the experiment cabin, the simulation system is used for carrying out snowfall simulation and snow raising simulation, when the snowfall simulation is carried out, the simulation system further comprises a snowfall device connected with the snow conveying device, and when the snow raising simulation is carried out, the simulation system further comprises a snow raising device connected with the snow conveying device. According to the system, snow making and experiment are separated in different cabins and do not affect each other, a stable environmental condition is provided for snow making, and the environmental condition of an experiment area is not affected by different temperature and humidity requirements of snow making.

The invention relates to a shale compressive strength logging prediction method, which comprehensively considers the influence of stratum stress, temperature and hydration, and specifically comprises the following steps of: preparing a shale standard cylindrical core, sequentially carrying out ultrasonic testing and drilling fluid hydration treatment on undisturbed shale under different temperature and confining pressure conditions, and carrying out shale compressive strength logging prediction. Performing ultrasonic testing under the same condition after the hydration to obtain longitudinal and transverse wave time difference before and after the hydration of the shale; based on hydration, after interval transit time is extracted, a shale compressive strength experiment is carried out. According to the method, the influence of stratum stress and temperature is considered, so that the prediction result is more accurate and reliable; the logging data is used for prediction, the efficiency is improved, and time consumption and high cost of laboratory testing can be reduced. The method is not only suitable for the field of petroleum and natural gas exploration, but also can be applied to the fields of geotechnical engineering, underground storage and the like, and the application range and the market potential are expanded.

This invention provides a method for optimizing temperature control in large-volume hydraulic concrete, relating to the field of computer-aided engineering technology. The invention corrects the initial temperature field of the finite element model based on measured temperature values ​​and dynamically determines the candidate range of cooling water inlet temperature according to the current cooling rate, ensuring that each candidate range adapts to the cooling requirements. It achieves an accurate calculation starting point without laboratory testing, shortening the optimization cycle and reducing costs. By pairing candidate inlet water temperature values ​​with thermal resistance values ​​and substituting them into the finite element model to predict the temperature field, it determines the temperature safety margin, temperature difference safety margin, and temperature fluctuation stability index, using these three indices to evaluate the temperature control effect. This avoids the risk of sudden temperature drops caused by a single criterion. By selecting the feasible combination with the smallest deviation between the predicted temperature and the target control temperature as the target temperature control parameter, it achieves refined selection for each time period, ensuring that the internal temperature approaches the preset cooling target and that the cooling process proceeds smoothly.

The invention discloses an inspection instrument state monitoring system, which belongs to the technical field of medical inspection equipment, and comprises an equipment sensing layer, a data transmission layer, a data processing layer, an application display layer and a power supply module, the equipment sensing layer comprehensively acquires operation parameters, environment parameters and fault information of the inspection instrument through various sensors and universal interfaces; the data transmission layer adopts a wired + wireless dual-mode design to realize stable data transmission and breakpoint resume; the data processing layer realizes accurate identification and pre-judgment through an anomaly identification module and a fault pre-judgment module, and realizes centralized data management in combination with local and cloud storage; the application display layer realizes data visualization, remote monitoring and graded early warning through an upper computer and a mobile phone APP; the power module is equipped with a standby power supply to deal with temporary power failure. According to the method, the defects of low efficiency, early warning lagging and high operation and maintenance cost of traditional manual inspection are overcome, operation is easy and convenient, the cost is moderate, adaptability is high, real-time monitoring, accurate early warning and preventive operation and maintenance of the inspection instrument can be achieved, it is guaranteed that inspection work is carried out in order, and the primary medical inspection quality and efficiency are improved.

This application provides an automatic continuous measurement method for the flowability of filler materials, comprising the following steps: Step S1, connecting the continuous measurement equipment, including: a first branch and a second branch connected in parallel; a third branch simultaneously connected to the ends of the first and second branches; Step S2, powder preparation; Step S3, automatic batching and slurry preparation, including adjusting the pipeline status, the pipeline status including: slurry preparation mode; water addition mode; and slurry discharge mode; Step S4, leveling work using the automatic flowability measurement device; Step S5, automatic sampling using the automatic flowability measurement device; Step S6, automatic flowability measurement; Step S7, cleaning and resetting the test plate; Step S8, cleaning the pipeline and the continuous measurement equipment. The automatic continuous flowability measurement method involved in this application can achieve high-frequency and accurate monitoring of flowability under long-distance, high-temperature conditions, and its slurry pipeline design can significantly improve the efficiency of multi-ratio tests, meeting the needs of large-scale laboratory testing.

1. The name of the design product: enzyme label instrument (laboratory). 2. The use of the design product: for laboratory testing instruments. 3. The design points of the design product: in shape. 4. The picture or photo that best indicates the design points: perspective drawing.

To ensure that test samples generated from patient-administered blood draws are stored reliably in an appropriate environment, and to provide technology that facilitates patients' own health management. [Solution] The blood collection management system 1 comprises an information processing device 200 located in association with a pharmacy 2 where blood collection is performed, and an information processing device 400 located in association with a hygiene testing laboratory 4 where testing is performed. The information processing device 200 transmits an identification code corresponding to the blood collection tube 38 to a database in association with a patient 10 using the blood collection tube 38. The information processing device 400 transmits the test results corresponding to the blood collection tube 38 to the database in association with the identification code.

The invention discloses a method for preparing a perovskite unijunction and a laminated cell by using a perovskite single crystal, in the preparation process, a halogenated perovskite single crystal prepared in advance is dissolved in a polar solvent to prepare a perovskite photoactive layer precursor solution, other additives are not needed in the precursor solution except the halogenated perovskite single crystal, and the perovskite photoactive layer is prepared. The film quality and the device performance are improved; wherein the perovskite optical active layer is made of a perovskite material matched with a monocrystalline silicon band gap; the photoelectric conversion efficiency of the perovskite sub-cell contained in the solar cell prepared by the method in a laboratory test exceeds 23%, the initial efficiency is kept above 97% after 408 hours under an open-circuit illumination condition, the photoelectric conversion efficiency of the perovskite / crystalline silicon two-end laminated cell in a laboratory test exceeds 33%, and the perovskite / crystalline silicon two-end laminated cell has excellent operation stability.

The invention discloses a pulse current boundary control method of a power battery, electronic equipment and a storage medium. The method comprises the following steps: calibrating an ohm voltage drop ratio according to pulse ohm voltage drops and total battery voltage drops of a power battery at different temperatures and charge states; according to the pulse ohm voltage drops of the power battery at different temperatures and states of charge and the pre-applied pulse current, based on the Ohm law, a mapping relation coefficient of the pulse ohm voltage drops and the pulse current is calibrated; and updating the pulse current boundary according to the ohm voltage drop proportion, the mapping relation coefficient and the voltage drop of the battery safety limiting voltage and the battery static voltage. Compared with the prior art that a series of fixed boundary values are set based on the most stringent laboratory test data, the technical scheme provided by the embodiment of the invention can realize automatic updating of the full life cycle pulse current boundary of the battery, calibrate the maximum capacity of the battery and exert the optimal performance of the battery.

The invention discloses a soil nutrient remote sensing intelligent agricultural decision-making system, which relates to the technical field of intelligent agriculture, takes laboratory test as an anchor, fuses data such as multi-temporal remote sensing, climate and solar geometry, and performs geometry-atmosphere consistency correction and observation confidence evaluation; performing state space coding of phenological phase alignment on the multi-year sequence to obtain a stable substrate and abnormal characterization; sample point-observation pairing and robust aggregation are completed in a time window based on comprehensive weights of factors such as climate, geometry, phase, stability, crop and growth vigor; quality gating and BRDF normalization are combined, and VIF and multi-output importance write-back screening features are grouped; simultaneously modulating loss and sampling according to data value scores in training; and outputting the pixel-level N / P / K continuous grid, the level division and the uncertainty, and performing capitalization recording. The system is high in precision, strong in robustness, reproducible and suitable for large-scale deployment.

The invention provides a polyethylene-polypropylene blend standard test piece for tax rule identification and a preparation method thereof, and belongs to the technical field of polyethylene-polypropylene blend content detection. The linear low-density polyethylene resin and the homo-polypropylene resin are used as main components, the stability of the standard test piece is improved through the anti-aging effect of the antioxidant, the dispersing effect is improved through the dispersing agent and the lubricating agent, the uniformity of the standard test piece is improved, the crystallinity of the standard test piece is improved through the nucleating agent, and the long-term storage stability is improved; all the components have a synergistic effect, so that the polyethylene-polypropylene blend standard test piece for tax identification, which is good in uniformity and excellent in long-term storage stability, is obtained. The preparation method provided by the invention is simple in process, and the prepared standard sample can be directly used for customs laboratory identification, laboratory detection method verification, reprocessed plastic production enterprise product quality control, measurement uncertainty evaluation, personnel training assessment and the like.

The present invention discloses a test system and a test method for testing the detection performance of a human body safety inspection apparatus, and the present solution includes a moving track assembly, a fixed tray assembly, a human body model assembly, a control assembly, a test card assembly and a test article. At the same time, the temperature of different parts on a human body model is controlled to vary within 36° C. to 45° C. to simulate the temperature of different parts of a real human body, while controlling the human body model carrying a test card and / or test article to rotate and adjust height so that the human body model rotates at different angles to face the human body safety inspection apparatus to be tested, and the human body model is driven to move back and forth repeatedly at a set speed to an appropriate position in a region under inspection to simulate a real person in a detection state in an actual application scenario, thus completing the automatic laboratory testing of the human body safety inspection apparatus. The present solution realizes the automatic laboratory detection of the human body safety inspection apparatus, thus greatly reducing the labor cost, and the data accuracy is effectively improved, thus effectively increasing the testing efficiency.

This invention belongs to the field of solid mineral exploration and evaluation technology, specifically disclosing a rapid field identification method for altered rock-type niobium-tantalum mineralization based on spectral measurements. The method collects spectral data of altered rocks, extracts Fe-OH and Mg-OH spectral absorption characteristic position data after envelope removal, and completes preprocessing through outlier identification and interpolation filling. After adaptive smoothing, weighted fusion, and standardization, multi-model parameter fitting is performed, and the optimal model is selected by combining goodness of fit and information criteria. After smoothing and inflection point analysis of the fitted values, the niobium-tantalum mineralization grade range is determined. This invention achieves in-situ, non-destructive, rapid, and intelligent field identification, determining the degree of mineralization without laboratory testing, significantly improving prospecting efficiency, reducing exploration costs and risks, filling the gap in rapid spectral identification technology for altered rock-type niobium-tantalum mineralization, and providing efficient technical support for the exploration of strategic rare metal resources.

This utility model relates to the field of storage device technology, and discloses a storage device for laboratory testing, including a cabinet, two fixing blocks, and a storage box. The upper ends of the two fixing blocks are provided with a locking mechanism, and the upper end of the storage box is provided with a clamping mechanism. The locking mechanism includes multiple baffles, each with a slot in the middle of its inner wall. A threaded rod is rotatably connected to the bottom surface of each slot, and a threaded sleeve is fitted onto the outer wall of each threaded rod. Two connecting rods are fixedly connected to the lower ends of each threaded sleeve, and protrusions are fixedly connected to the lower ends of adjacent connecting rods. A locking block is fixedly connected to the middle of the lower end of each baffle. In this utility model, the threaded rods and protrusions cooperate to allow the connecting blocks to move and lock quickly, enabling convenient installation and removal of the baffles. The baffle positions are adjustable to accommodate items of different widths, reducing space waste, improving storage versatility, and making the entire process more convenient and practical.

This invention presents a rapid method for detecting moisture in raw materials and fuels. Addressing the problems of low efficiency, long cycle time, large human error, and significant data feedback delays associated with existing methods using manual oven drying in centralized laboratory testing, this invention provides a systematic solution for real-time, automated moisture detection at the physical testing end. The core of this method lies in the following: after raw materials are sampled upon arrival at the plant, moisture samples and analytical samples are separated. The moisture sample is directly placed in a multi-station fully automated moisture analyzer, where weighing, drying, and calculation are automatically completed. The test results are automatically uploaded to the enterprise's quality management system in real-time via a data interface for immediate production use. Simultaneously, the analytical sample is sent to the laboratory for testing according to the original process. This invention, through a combination of equipment automation and process reconfiguration, achieves on-site, parallel, automated, and real-time moisture detection, significantly improving detection efficiency and accuracy, and providing timely and reliable data support for stable blast furnace production and cost control.

The rapid antibody and antigen detection device comprises a box shell and a drawer structure, a lead screw sliding table is assembled on the inner top face of the box shell, and a near-field fluorescence detection module and a light sensing piece are fixedly installed on the bottom face and the inner side face of a sliding base of the lead screw sliding table respectively. A plurality of photoelectric sensors are transversely erected on the back face of the inner side of the box shell, and a display module electrically connected with the near-field fluorescence detection module is arranged on the outer top face of the box shell. According to the rapid detection device for the antibody and the antigen, a drawer structure is arranged, a multi-channel containing structure can be provided for batch fluorescence immunochromatography kits, automatic continuous detection can be achieved by means of cooperation of a near-field fluorescence detection module driven by a lead screw sliding table and an external display module, the detection efficiency is effectively improved, and meanwhile, the detection accuracy is improved. The closed detection cavity formed by the enclosure of the box shell and the drawer structure not only meets the accurate detection requirement of a laboratory, but also supports an outdoor mobile detection scene.

The utility model discloses a reflective vest with light strip protection and storage functions, which relates to the technical field of reflective vests, and comprises a vest body, an open front is arranged in the middle of the front side of the vest body, a single-opening oversleeve and a double-opening oversleeve are respectively arranged on the left side and the right side of the vest body, a combined cloth belt is fixedly mounted in the single-opening oversleeve, and the double-opening oversleeve is fixedly mounted in the combined cloth belt. A worker only needs to hold the tail end of the second carrier cloth to connect the first adhesive tape and the second adhesive tape, the front and back reflective stripes can be displayed by normally wearing the reflective vest, the front and back surfaces of the reflective vest can reflect light of passing vehicles, the risk of collision by the vehicles during night operation is effectively reduced, and the working efficiency is improved. In idle, a worker only needs to unfasten the nylon fastener tape, the combined cloth tape can automatically reset under the action of the elastic band (the elastic modulus is 150 MPa), and the microprism type reflective strip is completely stored in the oversleeve. Laboratory tests show that the wear rate of the reflective strip in a storage state is reduced by 70%, and the service life is prolonged by more than two times.

This invention belongs to the field of quality monitoring technology, and in particular to a cloud platform-based laboratory quality monitoring and rectification system. It is characterized by comprising a data acquisition module, a data analysis module, a problem early warning module, a rectification execution module, and a data storage module, all connected to the cloud platform. The data acquisition module collects equipment operation data, environmental monitoring data, test sample information, and personnel operation records during the laboratory testing process and transmits them to the cloud platform. By integrating advanced information technology, it constructs an intelligent quality management platform that integrates data acquisition, analysis, early warning, rectification, and storage, enabling full-process, real-time, and precise monitoring and management of laboratory testing quality, effectively improving laboratory quality management efficiency, and ensuring high-quality output of test results.

The invention discloses a visual LAMP (loop-mediated isothermal amplification) primer group for fowl adenovirus serum 11 detection and a detection method thereof, the LAMP primer group is composed of a pair of outer primers (F3 / B3) and a pair of inner primers (FIP / BIP), the sequences of the outer primers are as shown in SEQ ID NO: 1-2, and the sequences of the inner primers are as shown in SEQ ID NO: 3-4. The LAMP primer group can be used for detecting pathogens only by about 70 minutes, the sensitivity is higher, the minimum nucleic acid concentration is 1.93 * 10 < 5 > copies. L <-1 >, the detection result is judged only through the color of a product, and the whole detection process does not need expensive instruments and can be completed only by a centrifugal machine and a water bath kettle. The detection method provided by the invention is simple, has high efficiency and accuracy, can be used for scientific research detection and laboratory detection, and is also suitable for popularization in grassroots veterinary disease prevention and control institutions or common farms.

This invention relates to the field of clinical laboratory technology and discloses an aptamer that specifically binds to AZGP1 and its applications. The invention uses magnetic bead SELEX technology to screen for the AZGP1-specific aptamer Seq7. Guided by Mfold secondary structure prediction, the core binding region Seq7T is truncated. Further, through site-directed mutagenesis, insertion, and substitution modifications, an optimized version, Seq7TM, containing specific motifs and capable of forming a compact mini hairpin structure, is obtained, further improving the performance of the nucleic acid aptamer. The aptamer of this invention can be widely used in the preparation of AZGP1 detection reagents, kits, or sensors; the preparation of AZGP1 capture / separation / purification formulations; the development of new methods for rapid early diagnosis of AMD; and the construction of AMD targeted drug delivery systems. It provides a novel and practical tool for early screening, early diagnosis, and early intervention of AMD, and has significant application value in the field of clinical laboratory testing.

The application discloses a sample storage device for laboratory detection and belongs to the sample storage field. The sample storage device for laboratory detection comprises a storage box, a storage plate arranged in the storage box, a plurality of placing holes arranged on the storage plate, a rotating ring rotatably arranged in the placing hole, a first clamping plate slidably arranged in the rotating ring, an elastic element arranged between the first clamping plate and the inner wall of the rotating ring, a sliding block slidably arranged on the rotating ring, a first connecting rod and a second connecting rod arranged on the sliding block, a second clamping plate fixedly connected to one end of the first connecting rod and the second connecting rod arranged in the rotating ring, an arc groove arranged on the storage plate, and a pulley rotatably arranged on the sliding block and rolling along the inner wall of the arc groove. The sample storage device can slowly rotate the test tube during storage, avoids the solidification of the sample in the test tube caused by long-time standing, thereby affecting the subsequent detection effect, and reduces the labor intensity of the workers.

The utility model relates to the technical field of laboratory detection, and discloses a sample preservation device for laboratory detection, which comprises a preservation box, the inner wall of the preservation box is in sliding connection with a placing frame, the side surface of the placing frame is fixedly provided with a connecting rod, the side surface of the connecting rod is fixedly provided with a side plate, and the side plate is fixedly provided with a through hole. And the inner walls of the side plates are in sliding connection with the inner wall of the storage box. A side plate is used for driving a placing frame to move through a connecting rod, then a second spring is used for pushing a square plate to move in the inner wall of a fixing frame, and therefore the square plate is used for driving the outer edge of an inclined rod to be limited with the inner wall of the storage box, and in the sliding process of the placing frame, the side face of the placing frame is in lap joint with the side face of a sliding rod and the side face of a sliding barrel; the outer edge of the sliding barrel slides in the inner wall of the outer barrel, the inner wall of the sliding barrel slides on the outer edge of the inner barrel, and therefore the sliding barrel drives the magnet ring to slide in the inner wall of the coil, electromagnetic damping is generated on the magnet ring through the coil, and then the placing frame is assisted in damping.

The invention discloses an MPC-UHPC negative temperature performance comprehensive research and judgment method based on data driving, and relates to the technical field of material performance prediction. The method comprises the following steps: preparing slurry through laboratory tests, testing a hydration temperature peak value, testing compressive strength and maximum freeze-thaw cycle times after a test piece is maintained, constructing a data set, cleaning and removing abnormal values, dividing a training set and a test set, constructing a research and judgment model to carry out three-layer research and judgment on hydration temperature, mechanical properties and durability, and respectively carrying out training and testing. And inputting real data into the model, outputting a predicted value, carrying out hydration temperature research and judgment, carrying out mechanical property and durability research and judgment if conditions are met, carrying out assignment calculation on a coding value CEC according to constraint conditions, and outputting a defined applicable scene. A multi-dimensional data set of negative temperature performance is constructed through a laboratory test, three layers of research and judgment constraints of hydration temperature, mechanical property and durability are defined in combination with an improved research and judgment model, and an applicable scene can be quickly screened and obtained.

This application provides a single-component formaldehyde-free styling agent specifically for mineral wool and a method for detecting its shelf life. The formaldehyde-free styling agent uses a formaldehyde-free binder as the matrix component, mixed with a compatible reactive silane coupling agent. Optionally, it also includes water-repellent agents and dust-proofing oils, etc., to produce a mineral wool product styling agent with long-term stability. This styling agent not only avoids the use of formaldehyde at the source, meeting environmental protection requirements, but also has a shelf life of more than 6 months, or even more than 12 months. This changes the traditional industry situation where styling agents need to be prepared on demand, providing a "ready-to-use" styling agent, realizing the mass production of single-component styling agents, thereby ensuring the quality stability of the styling agent. The detection method provided in this application can realize laboratory testing of the shelf life of mineral wool styling agents without the need for production line testing.

The invention discloses a clinical laboratory blood sample split charging and sterilizing device which comprises a split charging and sterilizing device body, the split charging and sterilizing device body comprises a split charging and sterilizing box, a sealing cavity is formed in the upper half portion of the interior of the split charging and sterilizing box, and a split charging plate is fixed to the inner bottom wall of the sealing cavity; sub-packaging grooves are formed in the sub-packaging plate at equal intervals; by designing the drying and dust removing mechanism, when air enters the ozone generator, the air enters a separation groove through a mounting net plate and is dried through drying agent particles, and after being dried, the air is discharged from the rear surface of a net box and is filtered through an oil molecule filtering net plate and a dust filtering net plate; and then the air is introduced into the inlet pipe through the concentration box and enters the ozone generator, so that drying and filtering treatment are facilitated, moist and dust particles are not easy to enter the ozone generator during working, the service life is prolonged, and the convenience of dehumidification and filtering treatment of the inlet air during subpackaging and sterilizing treatment of the blood sample after the subpackaging and sterilizing device main body examines in a clinical laboratory is improved.

The invention relates to an MTAP and CDKN2A gene fluorescence in-situ hybridization joint detection probe and application thereof, and belongs to the technical field of biological medicine. The invention provides a probe and a probe composition for tumor diagnosis and prognosis evaluation, the probe composition comprises a first probe for detecting an MTAP gene and a second probe for detecting a CDKN2A gene, and the first probe and the second probe are respectively marked with a first fluorescein and a second fluorescein which can generate different colors; the invention provides a fluorescence in situ hybridization combined detection method for simultaneously detecting MTAP and CDKN2A gene variation and a kit thereof. The application range is wide, the kit can be used for various tissue and cell samples needing to detect MTAP and CDKN2A gene states at the same time, and two results are obtained through one-time detection and accord with the targets of quality improvement and efficiency improvement of clinical examination; the method has a very wide application prospect in evaluating the malignant degree of various cancers and selecting a clinical precise treatment strategy.

The invention discloses a sample storage device for laboratory detection, and belongs to the field of sample storage. A sample storage device for laboratory detection comprises a storage box and a storage plate arranged in the storage box, a plurality of placement holes are formed in the storage plate, and the sample storage device further comprises rotating rings rotationally arranged in the placement holes; the first clamping plate is arranged in the rotating ring in a sliding mode, and an elastic piece is arranged between the first clamping plate and the inner wall of the rotating ring; the sliding block is slidably arranged on the rotating ring and provided with a first connecting rod and a second connecting rod, and the ends, arranged in the rotating ring, of the first connecting rod and the second connecting rod are fixedly connected with a second clamping plate; the arc groove is formed in the storage plate; the pulley is rotationally arranged on the sliding block and rolls along the inner wall of the arc groove; according to the test tube storage device, test tubes can be conveniently and slowly rotated during storage, the situation that samples in the test tubes are solidified due to long-time standing, and consequently the subsequent detection effect is affected is avoided, and the labor intensity of workers is reduced.

The present application relates to the technical field of solid-liquid separation in laboratory testing, and particularly relates to a sand core filter funnel aperture measuring method, a measuring device of a filter plate hole of a sand core filter funnel is connected, a titration tube is used to drop a layer of pure water film with a preset thickness on the filter plate of the sand core filter funnel; a gas pressure device is started to stably and slowly pressurize the filter bottle, the filter plate surface is observed from above, when the first bubble appears, the pressure value of the digital pressure device at this time is recorded, the pressure average value of n times of tests is calculated; when the bubbles uniformly appear on the filter plate surface, the pressure value of the digital pressure device at this time is recorded, the pressure average value of n times of tests is calculated, the maximum aperture and the average aperture of the filter plate are calculated; the uncertainty of the sand core filter funnel aperture measuring method is evaluated, the accuracy of the measurement is calculated and judged, the maximum aperture and the average aperture of the filter plate hole of the filter funnel can be measured, the accuracy of the measurement is judged, and the accuracy and reliability of the sand core filter funnel aperture measuring method are ensured.