37 results about "Laboratory chemicals" patented technology

The invention discloses an automatic laboratory chemical oxygen demand analysis device. The automatic laboratory chemical oxygen demand analysis device comprises a framework, wherein the framework is internally provided with a work platform; the work platform is provided with a digestion pipe box for holding a plurality of digestion pipes; the framework above the digestion pipe box is provided with a three-shaft moving platform; a liquid adding pipe and an ORP (oxidation reduction potential) electrode are assembled on the three-shaft moving platform by a liquid adding pipe fixture; the ORP electrode and a computer control system are connected with each other. The automatic laboratory chemical oxygen demand analysis device provided by the invention can analyze the chemical oxygen demand automatically, thus saving the time of workers, and lowering the working intensity of the workers.

The invention belongs to the technical fields of crop nutrition diagnosis and fertilization, and in particular relates to a fertilizing method based on nitrogen nutrition nondestructive detection of winter rapes. The fertilizing method is characterized by comprising the following steps: testing a SPAD value by selecting the key growing period and time of the rapes, determining the sensitive leaf position and leaf part subjected to the nitrogen nutrition detection, establishing a critical leaf SPAD value detection method, carrying out real-time nitrogenous fertilizer topdressing by virtue of obtained detection values, and the like. The fertilizing method disclosed by the invention can be used for evaluating and detecting the nitrogen nutrition sufficiency and deficiency level of the rapes relatively accurately; and compared with a conventional laboratory chemical analysis method, the method, as a nondestructive rape nitrogen nutrition status detection and fertilization method, is real-time and rapid.

The invention discloses a laboratory chemical reagent management method based on the Internet of Things. A system comprises an intelligent cabinet, a communication server, a cloud database and mobilecommunication equipment in communication connection with the communication server. An RFID recognition device, an electronic balance, an electromagnetic lock, an identity recognition device, a data input module and a communication module are arranged on the intelligent cabinet. The RFID identification device is arranged in the intelligent cabinet and is used for identifying the electronic tags adhered to the chemical reagent bottles. The electronic balance is arranged in the intelligent cabinet and used for weighing the chemical reagent bottles. The electromagnetic lock is arranged on the cabinet door. The identity recognition device and the data input module are arranged on a cabinet door of the intelligent cabinet. The information of the chemical reagents stored in the intelligent cabinet is automatically uploaded and backed up to the cloud server in a wireless interconnection mode. The working efficiency is improved. Hazardous chemical reagents can be effectively managed, and loss risks caused by random placement of the hazardous chemical reagents and waste caused by long-time unused hazardous chemical substances are avoided, or the situation that the experiment progress is delayed due to insufficient reagent inventory is avoided.

The invention provides a near infrared determination method for potato reducing sugar. The method comprises the following steps: a step of establishing a determination model; a step of collecting a sample; a step of carrying out laboratory determination: determining the content of reducing sugar of potato samples of different varieties by using laboratory chemical analysis; a near infrared analysis step: carrying out vacuum freeze drying on the potato samples with different varieties to obtain freeze-dried potato samples; grinding the freeze-dried potato samples into powder and putting the powder into a sample tank to be subjected to near infrared spectrum scanning to obtain a near infrared spectrum; a step of establishing a prediction model: establishing the prediction model according to the near infrared spectrum of the samples and a chemical near infrared spectrum and establishing a mathematic model between the measured value of the potato reducing sugar and the near infrared spectrum; and a determination step: substituting the near infrared spectrum of a sample to be detected into the mathematic model established in the step of establishing the prediction model to obtain the content value of the potato reducing sugar of the sample to be detected.

The invention relates to a plant leaf anthocyanin content estimation method and device based on an SOC hyperspectral index. Firstly, a hyperspectral remote sensing image and an anthocyanin relative content of a plant leaf in a stressed state are obtained; then, correlation of hyperspectral indexes formed by combining any two wavebands and the anthocyanin content is calculated, the hyperspectral index with the maximum correlation is selected, and an anthocyanin content estimation model is built according to the selected hyperspectral index; the hyperspectral image of the to-be-measured plant leaf is measured, the hyperspectral index is extracted, the obtained hyperspectral index is substituted into the built estimation model for calculation, and the result is the estimation value of the anthocyanin content of the to-be-measured plant leaf. Leaf spectral reflectance data is fused with anthocyanin content data, the hyperspectral index is selected through correlation analysis, the pigment content is extracted on the basis of the hyperspectral index method, operation is easy and quick, precision is high, and errors generated in the extraction process in a laboratory chemical method are effectively avoided.

The invention belongs to the field of soil environment monitoring and ecological risk assessment and relates to a hyperspectral image-based regional ecological risk assessment method. The method comprises the following steps that: 1) a soil sample in a study area is collected; 2) the laboratory chemical determination of the concentration of heavy metal in the soil sample is performed; 3) the imaging spectral data of the study area are acquired, and aeronautical hyperspectral data preprocessing is completed; 4) the inversion estimation of the concentration of various kinds of soil heavy metalsin the study area is realized on the basis of hyperspectral image data; and 5) the estimation results of the various soil heavy metals are inputted into an ecological risk assessment model, so that the ecological risk assessment mapping analysis of large-range continuous geospatial space with spatial pixels adopted as units, in the study area, can be obtained. The method has non-contact performance, is based on pixel-scale large-range continuous geospatial space, and can rapidly and efficiently carry out regional ecological risk assessment.

The invention relates to the field of analytical chemistry, in particular to a xylo-oligosaccharide content detection method. The detection method comprises steps as follows: a xylo-oligosaccharide test sample is taken and hydrolyzed, a hydrolyzed xylo-oligosaccharide test sample is obtained, HPLC (high performance liquid chromatography) is adopted for detection, the chromatographic condition of the HPLC is as follows: a saccharide column or an amino column is adopted, purified water or an acetonitrile aqueous solution is taken as a mobile phase for isocratic elution, and the xylo-oligosaccharide content is obtained according to an HPLC detection result. With the adoption of the detection method, interference of other functional saccharide cellulose can be eliminated, and the xylo-oligosaccharide content can be accurately detected; the xylo-oligosaccharide content detection method meets the requirement of the GB / T 27404-2008 Criterion on Quality Control of Laboratories-Chemical Testing of Food through linearity and precision tests and recovery rate tests, it proves that the detection method is scientific and effective, and the purpose of quality control on the xylo-oligosaccharide content detection can be achieved.

The invention discloses a multi-chamber storage cabinet for a chemical laboratory. The positions of the front and rear sides of the board body are also in a parallel state, and there are guide rails respectively, the two guide sliders at the left position of the upper guide rail and the two guide sliders at the left position of the lower guide rail There is a movable isolation board between the blocks, and several test tube upside-down columns are arranged on the board where the board is placed, and there are also leaking holes on both sides of the board where the board is placed, and the right side wall of the test tube disinfection room A sewage discharge pipe is also arranged at the bottom position and on the cabinet side plate corresponding to the cabinet body. The invention avoids the drawbacks that the traditional fixed chamber specifications cannot be adapted to the storage of equipment with different volumes and shapes, ensures that the entire cabinet is free from pollution, and ensures the cleanliness of the test tubes.

The invention discloses a detection method of yeast glucan added into albumen powder. The detection method comprises steps of a) drawing a standard curve; b), extracting; c), carrying out hydrolytic treatment on a sample; d), detecting a to-be-detected sample by a chromatographic instrument; e), calculating to obtain a content of the yeast glucan in the to-be-detected sample, and the like. The interference of albumen, fat and a water-soluble saccharide can be eliminated according to the detection method provided by the invention; the content of the yeast glucan can be accurately measured; further, the detection method, through carrying out linear and precision tests and a recovery rate test on a content measurement method of the yeast glucan, all meets requirements of GB / T 27404-2008 Criterion on Quality Control of Laboratories-Chemical Testing of Food, and the detection method is proven to be scientific and effective, and can be used for realizing a quality control purpose to the content measurement of the yeast glucan.

Digital microfluidic (DMF) apparatuses, systems, devices and associated fluid manipulation and extraction devices, and methods of using them are presented. The devices may be useful for analysis of clinical, laboratory, chemical, or biological samples. A fluid application and extraction interface device may include a waste reservoir with a fluid trap and a transfer conduit extending through the waste reservoir so that fluid may pass from the transfer conduit into the waste reservoir and be trapped within the waste chamber. A transfer conduit may be configured to double back on itself and to hold a fluid sample. A DMF apparatus may be configured to hold and process large sample volumes.

An artifact free inert filter medium for collection of organic particles is a fibrous material is developed that can be formed into filters used in ambient and indoor air sampling equipment for subsequent laboratory chemical analysis by one of several thermal optical or thermal analysis methods for the determination of organic carbon (OC), elemental carbon (EC), pyrolysis carbon (PC), and total carbon (TC, sum of OC+EC), carbon fractions determined by thermal or thermal-optical analysis methods (OC1, OC2, OC3, OC4, PC, EC1, EC2, EC3) as well can be analyzed in the laboratory for individual organic species by a range of thermal analysis and or extraction / analysis methods.

The invention provides a laboratory chemical management method and device, and relates to the technical field of chemistry. The method comprises the steps: obtaining first identity information of a first user; judging whether the first identity information of the first user meets a preset permission condition or not; when the first identity information of the first user meets a preset permission condition, obtaining a first chemical name; first storage information of the first chemical is obtained according to the name of the first chemical, and the first storage information comprises first code information of the first chemical; matching the first coded information with the first identity information, and determining first receiving relation information; and sending the first storage information to the first user according to the first receiving relationship information, thereby achieving the technical effects of informatization of laboratory chemical safety management, reduction of laboratory safety risks, guarantee of efficient operation of laboratory personnel and environment, and comprehensive improvement of laboratory images.

The invention discloses laboratory chemical transfer equipment. The laboratory chemical transfer equipment comprises a storage box. The outer sidewall of the storage box is provided with a mounting opening. The outer sidewall of the storage box is connected with a box door matched with the mounting opening through hinges. The left and right inner sidewalls of the storage box are both provided with a plurality of opposite fixing grooves. The inner sidewalls of the two fixing grooves located in the same horizontal plane are connected with a carrying plate through connecting structures. According to the laboratory chemical transfer equipment, rubber rings in containing grooves have the elasticity; thus, storage bottles of which bottle bodies have different diameters can placed in the containing grooves of the carrying plates; meanwhile, through cooperation of telescopic rods and springs, the distance between the two carrying plates can be adjusted to facilitate placement of different heights of storage bottles, that is, through cooperation of the rubber rings, the telescopic rods and the springs, different heights and different widths of storage bottles can be stored in the storage box conveniently, and the internal space of the storage box is made full use of.

The invention discloses a chemical laboratory waste gathering device, relates to a chemical laboratory appliance, and comprises a rectangular shape box body; four vertical isolation plates are arranged at intervals in the length direction in the box body, thus forming five equal cavities in the box body; a plastic inner barrel is arranged in each cavity; the bottom of each plastic inner barrel is provided with a drain pipe having a valve; the drain pipe extends outside the box body; top covers, corresponding to the five cavities, are respectively arranged on the box body; the side wall of the box body is provided with an indication board; the bottom of the box body is provided with a support; a plurality of bar-shape protrusions are arranged at intervals on the side wall of the support; the bottom of the support is provided with universal wheels and foot cups. The gathering device can simply classify and collect the laboratory chemical waste, so chemical waste solid-liquid separation and waste liquid soda-acid separation can be realized; the chemical laboratory waste gathering device is mobile, and very practical.

A hazardous laboratory chemical management device comprises a cabinet, wherein a plurality of uniformly distributed outer boxes are fixedly mounted inside the cabinet; rectangular holes are formed inthe front end surfaces of the outer boxes; inner boxes are arranged inside the outer boxes; the front ends of the inner boxes are open; the peripheries of the front ends of the inner boxes are fixedlyconnected to the inner parts of the rectangular holes; the left end surfaces and the right end surfaces of the inner boxes are fixedly connected with the inner walls of the corresponding outer boxesthrough telescopic rods; box bodies are arranged on one sides of the telescopic rods; the box bodies are fixedly mounted on the inner walls of the outer boxes; first through holes are formed in the middles of the end surfaces, near the inner boxes, of the box bodies; supporting rods are fixedly mounted between the telescopic rods and the corresponding box bodies. The invention provides the novel hazardous laboratory chemical management device; the hazardous laboratory chemical management device is suitable for placing flammable hazardous chemicals; when a hazardous condition that the hazardouschemicals burn in the hazardous laboratory chemical management device happens, the hazardous laboratory chemical management device can rapidly and automatically extinguish fire without relying on electrical energy, so that the hazardous laboratory chemical management device is more reliable than the conventional equipment relying on a sensor for fire monitoring.

The invention provides a rotary auxiliary mixing tank which comprises a tank body, an opening and closing device, a conical face plug, a slow descending stage and a rotating shaft. The tank body is sphere, is made of a stainless steel material and is composed of two hemispheres, wherein an upper hemisphere and a lower hemisphere are respectively provided with a feed port and a discharge port. The position of the feed port is sealed by a sealing plug, and the tank body is internally provided with the slow descending stage; a raw material enters the feed port and then can fall onto the slow descending stage, and the raw material can creep down to an inner cavity of the tank body along the slow descending stage and then falls into the tank body, so that the falling speed of the raw material is buffered, and the raw material flying is alleviated. The discharge port is sealed by the conical face plug. The discharge port opening and closing device can control the opening of the conical face plug, and the mixed raw material falls down from the discharge port through action of gravity. The rotating shaft can be connected with a rack to realize rotary mixing of the mixing tank. The rotary auxiliary mixing tank can satisfy the mixing of laboratory chemical raw materials, avoid the flying of powdery raw materials and reduce the loss of precious raw materials. The mixing tank has the advantages of simple and compact structure, high adaptability and convenience in maintenance.

The invention discloses a biosafety laboratory chemical shower room pressure adjusting system and method. a high-grade biosafety laboratory is a special laboratory for research on intensive pathogen prevention and treatment, strict negative pressure requirements and directional airflow control of a core area of the laboratory are important technical measures for guaranteeing biosafety, an experimenter wearing the protective clothing needs to pass through a chemical shower room, and chemical liquid medicine in the chemical shower room is sprayed to disinfect the surface of the protective clothing in and out of the chemical shower room, so that negative pressure control of the chemical shower room is seriously influenced by the obvious airflow interference in the chemical shower room: a doorof the chemical shower room is opened and closed; personnel protective clothing is used for breathing, supplying air and discharging; chemical shower liquid is sprayed; 1-3 persons entering the chemical shower room are not fixed; and the instability of a valve characteristic curve is regulated and controlled. Complex airflow interference conditions and related influence factors of the chemical shower room enable a negative pressure regulation scheme of the chemical shower room to face a severe challenge.

The invention discloses an improved Carius tube assembly, and belongs to the field of laboratory chemical reaction vessels, wherein the improved Carius tube assembly comprises a tube body, a tube plug column, a sleeve and a sleeve cover; the opening part of the tube body is provided with an annular flange, and the annular flange and the opening part of the tube body are provided with openings with arc-shaped cross sections; the tube plug column comprises a column body and a sealing flange, and an arc-shaped sealing part corresponding to the opening is arranged between the column body and the sealing flange; the sleeve is provided with an inner cavity corresponding to the tube body, and the upper part of the sleeve is provided with an external thread; and an internal thread corresponding to the external thread is arranged in the sleeve cover, and the sleeve is of a two-section split structure. The assembly is convenient to assemble and disassemble, the tube body and other accessories are convenient to clean, the tube body is convenient to seal under the conditions of intermediate temperature and high pressure in the sample digestion experiment process, the sample can be well prevented from being polluted, meanwhile, the assembly can be repeatedly used, and the experiment cost is reduced.

The invention relates to the field of laboratory combustion equipment, and discloses a laboratory chemical substance combustion treatment device. The device comprises a treatment instrument, a combustion cavity with an opening facing one side is formed in the treatment instrument, a movable working plate capable of moving is arranged in the combustion cavity, and the size of the combustion space of combustion substances in the combustion cavity can be changed while the movable working plate moves. A ventilation pipeline with an upward opening is arranged on one side of the upper wall of the combustion cavity in the treatment instrument in a communicating manner, and a fanning assembly is arranged in the upper wall of the combustion cavity. According to the device, in gas mixing, gas in the ventilation pipe is diluted and mixed, air in the ventilation pipeline is driven to slowly overflow be fanned trough fan rotating, experimenters can smell the air conveniently, the ventilation pipeline is opened and closed through a closed movable plate, the amount of gas inhaled by the experimenters is reduced, the amount of harmful gas inhaled by the experimenters by mistake is reduced, and the physical health of the experimenters is further protected.

The invention provides a laboratory chemical medicine receiving automatic management system and method, which can reduce the labor management cost and make the management and receiving of dangerous chemicals more accurate. The laboratory chemical medicine receiving automatic management system comprises a chemical medicine cabinet door lock, a controller, a memory, a database, a display and a communicator, wherein the controller is in communication connection with the memory, the database, the display, the door lock and the communicator. The laboratory chemical medicine receiving automatic management method comprises the steps: a receiving database is established, a receiver sends a chemical medicine use application to the controller through a mobile phone and other communicators, the controller distinguishes the receiver, the identity of the receiver is authenticated, unlocking is controlled, and recording is conducted and the like. The use record of chemicals is monitored through thecomputer, the cost is effectively reduced, a worker can directly monitor and manage the use condition of chemicals in a laboratory through the computer, and the system and the method have the advantages of convenience, real-time performance, accuracy, convenience, reliability and the like.

The invention discloses a laboratory chemical reagent management system and a management method thereof. The laboratory chemical reagent management system comprises a server, reagent bottles and reagent bottle storage cabinets, a plurality of reagent bottle storage spaces are arranged on the reagent bottle storage cabinet, each reagent bottle storage space is internally provided with a weighing and code scanning base used for bearing a reagent bottle, a laboratory technician only needs to scan fingerprints through the fingerprint scanner on the cabinet door in the process of taking chemical reagents, no other tedious operation is needed for the laboratory technician and the acceptability of the laboratory technician is very high. And compared with the prior art, the number of devices required to be arranged is greatly reduced, so that the method has very high popularization and application prospects.

The invention relates to a collecting device, in particular to an automatic collecting device for laboratory chemical sewage. The technical problem to be solved is to provide an automatic collection device for laboratory chemical sewage, which can seal collected chemical sewage, prevent odor and harmful substances of the chemical sewage from volatilizing into air, and can clean a collection container after collecting the chemical sewage so as to reduce residues. According to the technical scheme, the automatic collection device for the laboratory chemical sewage comprises a cabinet body, a table board, a cabinet door and the like, a table board is welded to the top of the cabinet body, and a cabinet door is installed on the right front side of the cabinet body through hinges. By rotating the collecting basin, under the matching action of the arc chute and the rolling shaft, the collecting basin and the collecting barrel can be combined or separated, so that chemical sewage can be prevented from leaking, the collecting barrel can be conveniently taken out, and the collecting barrel can be positioned through the matching of the large rubber arc block and the small rubber arc block with the collecting barrel.

The invention relates to the technical field of chemical detection, particularly relates to a laboratory chemical substance detection system. The detection system comprises a terminal detection systemand a data processing system, the terminal detection system comprises chemical substance detection equipment and a data uploading and processing terminal, wherein the chemical substance detection equipment uploads detected data to the data processing system through the data uploading and processing terminal, and the data processing system transmits the processed data to a laboratory control terminal through a communication system after processing by utilizing a data classification algorithm, a data encryption algorithm and a similar data processing algorithm; a to-be-detected substance is detected through the chemical substance detection equipment; the detection result is processed through the data processing system; the data classification algorithm, the data encryption algorithm and thesimilar data processing algorithm are used to obtain a detection result with higher safety, better accuracy and lower data redundancy, and remote intelligent connection is achieved through the communication system, and very high creativity is achieved.

The invention discloses a hazardous chemical substance monitoring system, and the system comprises a host, at least one router in communication connection with the host and a plurality of sensors in communication connection with the router. On the basis of a constructed host-router-sensor network, real-time intelligent detection of the content of the laboratory chemical agent is realized by using cooperation among a sensor, a router and a host; the hop count between nodes and the average hop count in the Dv-Hop positioning optimization algorithm are improved and corrected based on the optimal hop count, the hop count adjustment factor and the beacon node distance error weighted value, and the algorithm positioning error is reduced; and tabu search with a rapid search capability is introduced based on the genetic algorithm to perform optimization, so that the search efficiency and the positioning accuracy of the algorithm are improved.

The invention discloses a miniature medicine checking system and device. The miniature medicine checking system comprises a personal terminal, a cloud server, a miniature medicine checking terminal, a weighing module and an identification module, and the miniature medicine checking terminal is connected with the weighing module and the identification module through an interface chip; and the miniature medicine checking device comprises a shell, a weighing part, an identification part and an interface part. The problems that an existing checking device needs an external power source, is large in size, heavy and difficult to operate are solved, and the checking device has the advantages of being small in size, portable and capable of being used at any time, and adapts to any operation environment and facilitates data calling and recording of batch laboratory chemical reagents. The advantages of multifunction, compatibility, network intercommunication and the like can also meet the module design of various intelligent management systems.

The invention discloses a pressure regulating system and method for a chemical shower room in a biological safety laboratory. The high-level biosafety laboratory is a special laboratory for research on the prevention and control of severe pathogens. The strict negative pressure requirements and directional airflow control in the core area of ​​the laboratory are important technical measures to ensure biosafety. It is necessary to pass through the chemical shower, and the chemical spray in the chemical shower will disinfect and sterilize the surface of the protective clothing of the experimental personnel entering and leaving. Therefore, there will be the following obvious airflow disturbances in the chemical shower, which will seriously affect the negative pressure control of the chemical shower: switch chemical The door of the shower room; the discharge of respiratory air supply for personnel protective clothing; the spraying of chemical shower liquid; 1 to 3 people entering the chemical shower room are not fixed; the instability of the characteristic curve of the control valve. The complex airflow disturbance conditions and related influencing factors in the chemical shower room make the negative pressure control scheme of the chemical shower room face severe challenges.

The invention provides a laboratory chemical experiment operating table comprising a processing rack, a transmission unit, a cleaning unit and an overturning unit. Linkage grooves are evenly formed inthe upper side of the interior of the processing rack from left to right, and connecting grooves are formed in the lower sides of the linkage grooves; the transmission unit is arranged on the upper sides of the linkage grooves, the cleaning unit is arranged on the lower sides of the linkage grooves, and supporting units are installed in the connecting grooves. According to the laboratory chemicalexperiment operating table, the transmission unit is additionally arranged based on the cleaning unit, and when test tubes are cleaned, the cleaning unit rotates up and down in a reciprocating mode,so that the test tubes are correspondingly cleaned to guarantee that the cleaned test tubes meet the use requirement; the overturning unit is additionally arranged, after the inner wall of the test tube is cleaned, the overturning unit overturns the test tube by 180 degrees, and the cleaning unit matches the overturning unit to clean the outer wall of the test tube, so that reagents remaining on the outer wall of the test tube are cleaned up, and potential safety hazards existing in an experiment are reduced.

The invention discloses an automatic laboratory chemical oxygen demand analysis device. The automatic laboratory chemical oxygen demand analysis device comprises a framework, wherein the framework is internally provided with a work platform; the work platform is provided with a digestion pipe box for holding a plurality of digestion pipes; the framework above the digestion pipe box is provided with a three-shaft moving platform; a liquid adding pipe and an ORP (oxidation reduction potential) electrode are assembled on the three-shaft moving platform by a liquid adding pipe fixture; the ORP electrode and a computer control system are connected with each other. The automatic laboratory chemical oxygen demand analysis device provided by the invention can analyze the chemical oxygen demand automatically, thus saving the time of workers, and lowering the working intensity of the workers.

The invention relates to the field of analytical chemistry, in particular to a xylo-oligosaccharide content detection method. The detection method comprises steps as follows: a xylo-oligosaccharide test sample is taken and hydrolyzed, a hydrolyzed xylo-oligosaccharide test sample is obtained, HPLC (high performance liquid chromatography) is adopted for detection, the chromatographic condition of the HPLC is as follows: a saccharide column or an amino column is adopted, purified water or an acetonitrile aqueous solution is taken as a mobile phase for isocratic elution, and the xylo-oligosaccharide content is obtained according to an HPLC detection result. With the adoption of the detection method, interference of other functional saccharide cellulose can be eliminated, and the xylo-oligosaccharide content can be accurately detected; the xylo-oligosaccharide content detection method meets the requirement of the GB / T 27404-2008 Criterion on Quality Control of Laboratories-Chemical Testing of Food through linearity and precision tests and recovery rate tests, it proves that the detection method is scientific and effective, and the purpose of quality control on the xylo-oligosaccharide content detection can be achieved.