36 results about "Separate sample" patented technology

The invention provides a gas field reservoir lithology earthquake prediction method based on CCIDI cleaning and TransMSAE, and the method comprises the steps: constructing a CCIDI cleaning module, and employing a well-divided lithology-divided strategy: employing IQR to remove statistical anomalies, employing DBSCAN to remove boundary noise, employing Isolation Forest to remove high-dimensional residual noise, and forming a high-quality logging data set; the method comprises the following steps: constructing a TransMSAE model: pre-standardizing a Transform encoder to capture long-range dependence, and providing robust time sequence representation; multi-scale convolution is introduced into the MSCCAM to extract a local-global mode, and cross attention is fused to improve complex deposition dynamic perception; aMFEM gating residual self-adaptively enhances minority class features, and minority class recognition is remarkably improved; designing NAFL-ProtoLoss mixed loss: NAFL focus inhibition easy-to-classify samples, ecological niche punishment over-confidence prevention, ProtoLoss zoom-in class inward pushing-out between classes, and optimization of unbalanced classification; finally, training and reasoning are carried out based on the model, and high-precision lithology prediction is achieved. The method provided by the invention has high generalization and accuracy, and has excellent reservoir prediction performance in a complex geological environment.

The invention discloses a full-automatic coke size fraction inspection method which comprises the following steps: automatically sampling by a sampler, and calculating the sampling times and the sampling interval time according to the number of discharging vehicles, the discharging duration and the total weight of the required sample amount; a forward and reverse rotation belt is used for division treatment, a screened sample enters a secondary collection hopper through a bucket elevator during forward rotation, and a work-separated sample enters a sample collection barrel during reverse rotation; opening the secondary collection hopper to enable the samples to uniformly enter a vibrating screen for screening, enabling the samples screened by the vibrating screen to respectively enter sample collection barrels of various size fractions, arranging an electronic platform scale below each sample collection barrel, and connecting the electronic platform scales with a mass metering system; and the mass metering system automatically reads the weight data of the electronic scale, calculates the coke proportion of each particle fraction according to the total weight added by each particle fraction and the unit weight of each particle fraction, and automatically generates a quality grade according to a preset quality judgment rule. According to the invention, the accuracy and reliability of coke fraction inspection can be improved, the labor intensity is reduced, and the inspection efficiency is improved.

The invention belongs to the technical field of agricultural product quality nondestructive testing, and relates to a food freshness intelligent monitoring device and method based on olfactory visualization. The device takes an olfaction visualization technology as a core, combines a deep learning algorithm and an Internet of Things technology, and mainly comprises portable detection equipment and an intelligent management cloud platform based on the Internet of Things; wherein the portable detection equipment adopts a main control-edge computing-sensing terminal three-stage heterogeneous framework, and a separated sample reaction chamber is designed, so that real-time acquisition of images of the olfactory sensor is realized. In the monitoring process, firstly, images before and after reaction of a sample and an olfactory sensor are collected, color difference extraction is carried out on the original images, an olfactory sensor data set is established, and a FousNet model is trained by utilizing the data set; and finally, accurately predicting the content of physicochemical indexes of the freshness of the food by utilizing a FousNet model, monitoring and evaluating the freshness of the food in real time, and providing technical support for intelligent management of the freshness of the food.

The invention discloses a plug-in mounting and separating tool special for underwater operation and an operation method. The plug-in mounting and separating tool comprises a plug-in mounting male connector, a plug-in mounting female connector, an in-situ sample storage tank, a hose and an operation handle. The plug-in female joint is connected with the storage tank through a hose, and the plug-in male joint is fixedly connected with the operating handle. A guide ring is arranged at the front end of the plug-in male connector, and a guide support is arranged at an inlet of the plug-in female connector. And sealing plugs driven by springs are arranged in the two parts and are kept sealed in a normal state. And a limiting insertion rod is arranged in the insertion female joint. And a compensation film and a compensation film spring are arranged in the storage tank. During insertion, the guide ring is matched with the guide support, the two sealing plugs abut against each other to be opened to form a channel, the limiting insertion rod is automatically locked, and a sample flows into the reagent bag under the action of the compensation film spring. During separation, the limiting insertion rod is separated, and the sealing plug automatically resets for sealing. The device is compact in structure and reliable in operation, adapts to a full-sea-depth environment, can realize unpowered transfer and recovery of underwater samples, and has important engineering application value.

The utility model relates to the technical field of medical laboratory equipment, and discloses a medical laboratory automatic assembly line and a sample support rail transfer device, the sample support rail transfer device comprises a reversing disc rotatably arranged between a sample injection rail and a cache rail and a reversing power assembly used for driving the reversing disc to rotate; the reversing disc is fan-shaped, and one end of the reversing disc is provided with a reversing groove which is matched with the sample support to drive the sample support to rotate; when the reversing disc is located at the working position, one end of the reversing disc is matched with the partition plate to separate the sample injection track from the cache track; when the reversing disc is located at the pre-track-changing position, the reversing disc cuts off the sample injection track, and the direction of the reversing groove is opposite to the sample injection direction of the sample injection track, so that the sample support enters the reversing groove along the sample injection direction; when the reversing disc is located at the track transfer position, the reversing groove is aligned with the cache track, the orientation of the reversing groove is the same as the cache direction of the cache track, so that the sample support is separated from the reversing groove, the structure is simple, the cost is low, the track transfer action is simple, and the track transfer efficiency is high.

The present application provides an automatic analysis device with HPLC, which can automatically determine the completion of column equilibration for preparation action of measurement, and determine the error position when an error occurs during equilibration. The automatic analysis device (100) comprises: a liquid feeding part (102) with a liquid feeding device (106) and a liquid feeding flow path (C0) and feeding mobile phase; a sample introduction part (103) for introducing sample into mobile phase; a separation column (113) for separating sample into multiple components; a detector (105) for detecting components; and a control part (114). The pressure sensor (107) detects the pressure of the liquid feeding flow path (C0), and the control part (114) calculates the pressure rise rate after the start of mobile phase feeding, the compression pressure change amount and the pressure average after the mobile phase feeding lasts for a certain time based on the pressure detected by the pressure sensor (107), and determines the completion of equilibration of the separation column (113).

The invention provides a quantitative detection method for extracellular vesicles based on self-interference spectrum reconstruction, and relates to the crossing field of biomedical detection and optical engineering. The method comprises the following steps: adding a clinical sample into a digital micro-fluidic chip, and separating sample liquid drops and liquid drops with functional modified magnetic beads through an electrode; mixing the two liquid drops, adding a vesicle binding solution, mixing, and incubating; fixing the magnetic beads through magnetic control, removing the solution, and adding deionized water to clean the magnetic beads; after removing the magnetic bead cleaning solution, adding a vesicle eluent and the magnetic beads for incubation; liquid drops containing extracellular vesicles are separated out; transferring the liquid drops containing the extracellular vesicles to the upper part of a gold-plated slide, incubating and then removing the liquid drops; washing the hybridized gold-plated glass slide with deionized water; and detecting the number and particle size distribution of the vesicles by using a self-interference spectral imaging system. According to the invention, quantitative counting, particle size measurement and surface protein marker detection of extracellular vesicles can be realized at the same time, and quantitative imaging precision and detection efficiency of single vesicles are improved.

The utility model relates to the technical field of loading arms, and discloses an automatic sampling and analyzing device for tank car filling. The automatic sampling and analyzing device for tank car filling comprises a sampling pipe, one side of the sampling pipe is connected with a sample independent taking-out mechanism, and an equipment internal scraping mechanism is installed in the sampling pipe. The inner pipe and the connecting pipe are arranged in the sampling pipe, the scraping disc is arranged above the middle of the connecting pipe and connected with the connecting pipe through the connecting rod, and the inner pipe is in seamless connection with the butt joint pipe below the increasing and decreasing valve body, so that the inner pipe and the connecting pipe can move up and down through the change of the liquid height; according to the sampling device, the scraping disc is arranged, the butt joint port is formed in one side below the scraping disc, liquid is conveyed and sampled through the butt joint port, residual samples in the sampling pipe can be scraped and cleaned through the vertical movement of the scraping disc after conveying, meanwhile, the inner wall of the sampling pipe can be cleaned through clear water, and the sampling pipe can be used without pollution.

A method of operating an analytical instrument comprises ionising a sample to produce sample ions; performing a first ion separation scan by separating sample ions according to a first physico-chemica

The utility model discloses a low temperature scanning tunnel microscope separating type sample support capable of rapidly replacing samples, comprising a first mother support, a second mother support and a son support, the surface of the first mother support is provided with a boss, the boss is used for fixing a to-be-tested sample, the second mother support is provided with a heating zone, the surface of the son support is used for fixing a standard sample, and the boss is used for fixing the to-be-tested sample. The surface of the first mother support and the surface of the second mother support are each provided with a screw used for fixing the son support, the first mother support, the second mother support and the son support are each provided with an extended grabbing arm, the extended grabbing arms are provided with mechanical arms, and the mechanical arms are used for transferring the son supports on the surfaces of the first mother support and the second mother support. The utility model has the advantages of high use efficiency, effective reduction of thermal drift, and more accurate imaging.

The embodiment of the utility model relates to the technical field of medical instruments, and discloses an analysis device and a blood analyzer, the analysis device comprises a rack, a disc assembly, a driving system and a detection assembly, the rack is provided with a base, the disc assembly is rotatably arranged on the base, and the driving system is arranged on the base; the disc assembly is provided with a plurality of detection stations arranged in the circumferential direction, the disc assembly is used for containing samples, the driving system comprises a first driving motor and a magnetic rod lifting assembly, the first driving motor is in transmission connection with the disc assembly, and the magnetic rod lifting assembly is used for stirring and separating the samples. The detection system comprises an optical detection unit, an electrochemical detection unit and an impedance detection unit, and the optical detection unit, the electrochemical detection unit and the impedance detection unit are respectively arranged corresponding to different detection stations. By means of the mode, continuous automatic detection of multiple samples is achieved, and the detection efficiency is remarkably improved.

1. Name of the designed product: Sealer and its main body of gradient dispenser. 2. Overall use of the product: The designed product is used as a tube sealer or heat sealer of a gradient dispenser. Gradient dispenser is a laboratory instrument used to create and dispense density gradient for sample separation and purification. The gradient dispenser is configured to automate a gradient containing reagents of different densities for a centrifugation process to separate sample components according to their different densities. The designed product is used to seal the container (e.g. test tube) after the gradient is dispensed into the container. Partial use of the product: The partial design of claim 2, 3, 4 is used as the main body of the sealer. 3. Design points of the designed product: The shape of the solid line shown in each view. 4. Picture or photo that best shows the design points: The perspective view of claim 1. 5. Claim 1 is designated as the base design. 6. Other circumstances that need to be explained: The dotted line in each view is shown for illustration purposes and does not constitute part of the claimed design of this design application. The dashed line in each view represents the boundary between the claimed part and other parts.

This utility model discloses a drill-and-take separation type farmland soil sample collection device, comprising: a movable chassis for communication with a microcontroller; a drilling mechanism; a soil-taking mechanism; a collection mechanism including a telescopic push rod, a collection box, a stepper motor, and a six-hole tray shaft-driven to the stepper motor drive end. Both the telescopic push rod and the six-hole tray are for communication with the microcontroller. The collection box is slidably mounted on the frame structure along the arrangement direction of the drilling and soil-taking mechanisms. The six-hole tray is rotatably connected to the collection box and has six sample-holding slots distributed on the same circumference. A navigation component is used for communication with the microcontroller and for collecting and storing three-dimensional spatial data of each sampling point. This drill-and-take separation type farmland soil sample collection device can complete the collection of soil samples from multiple points and store the soil samples from each sampling point separately, reducing labor intensity and improving sampling efficiency and accuracy.

A nuclear magnetic resonance (NMR) spectrometer includes an array of distinct, separate samples to be tested, a set of optically pumped magnetometers (OPM), an inhomogeneous magnet having a bore configured to accept the array of samples, a zero-to- ultra-low field detection center, a field cycler stage to transport the array of samples between the inhomogeneous magnet and the detection center along a path, the path having a guiding field solenoid; and a computer to control operation of the spectrometer.

The application provides a kind of extracellular vesicle quantitative detection method based on self-interference spectrum reconstruction, it is related to the intersection field of biomedical detection and optical engineering.The method comprises: adding clinical sample into digital microfluidic chip, and separating sample droplet from droplet with functional modification magnetic bead by electrode;After mixing two droplets, add vesicle binding solution and mix, then incubate;Through magnetic control fixed magnetic bead, remove solution, then add deionized water to clean magnetic bead;After removing magnetic bead cleaning solution, add vesicle eluent and incubate with magnetic bead;Separate out the droplet containing extracellular vesicle;Transfer the droplet containing extracellular vesicle to the upper of gold-coated glass, remove droplet after incubation;Use deionized water to clean hybridized gold-coated glass;Use self-interference spectrum imaging system to detect vesicle quantity and its particle size distribution.The application can realize extracellular vesicle quantitative counting, particle size measurement and surface protein marker detection simultaneously, and improve single vesicle quantitative imaging precision and detection efficiency.

1. Name of the designed product: centrifuge product chamber. 2. Use of the designed product: to contain and separate samples for double pusher centrifuge. 3. Design points of the designed product: in perspective view. 4. Picture or photo that best shows the design points: perspective view.

According to the grain sampling detection and separation sample delivery box and delivery method, doors are arranged on the two sides of the sampling detection and separation sample delivery box, the sampling detection and separation sample delivery box is installed on the wall of a detection room, an electromagnetic locking mode is adopted, when the door is opened on one side, the other side door is powered on and locked, the suction force is about 120 kg, and the sampling detection and separation sample delivery box cannot be opened. A gravity sensing plate is arranged on the lower side of the box body, an alarm can be given only when an inspection person places a grain sample on the gravity sensing plate in the box body and closes an opening and closing door on the side face, a 12v radar intelligent human body infrared sensing switch is arranged outside the sampling inspection box body, the sensing angle can be 120 degrees, and the sensing distance can be adjusted from 0 m to 8 m. And an inspector can open the box door only after the sample sending and sampling person leaves. After the gravity sensor is triggered, an alarm lamp in the inspection room flickers and gives out warning sound to remind an indoor inspector to sample; in the whole sample sending process, the contact between a sampling person and an inspection person is avoided, the risk of mutual greeting is avoided, and'sampling separation and blind sample detection 'is really realized.

The article to which the design of this application relates, an “electrophoresis analyzer,” is a machine that separates samples such as blood by electrophoresis and measures and analyzes the presence or absence and characteristics of DNA / RNA, etc.

1. The name of the design product: centrifuge (for clinical laboratory). 2. The use of the design product: for separating samples. 3. The design points of the design product: in shape. 4. The picture or photo that best shows the design points: perspective view.

The application relates to the field of microfluidic technology, in particular to a three-dimensional paper-based rotary microfluidic device, which comprises a first functional layer, a second functional layer and a third functional layer which are stacked from top to bottom, a rotating shaft is arranged on the upper surface of the third functional layer, the first functional layer is provided with a first shaft hole allowing rotation along the rotating shaft, and the second functional layer is provided with a second shaft hole allowing rotation along the rotating shaft; the first functional layer is provided with a sample inlet hole and an adsorption block at the bottom; the second functional layer is provided with a sample receiving groove matched with the sample inlet hole and a sample separation and enrichment hole matched with the adsorption block, the sample receiving groove is connected with the sample separation and enrichment hole through a sample flow groove, and the sample separation and enrichment hole is crossly provided with a paper-based bearing sheet for separating samples; and the third functional layer is provided with a sample analysis block matched with the sample separation and enrichment hole. The device can simultaneously perform the steps of sample feeding, impurity analysis, flow separation, separation and enrichment and detection on multiple samples.

Provided is a method for selectively separating samples from a substrate. The method includes: providing a substrate mounted with samples; selecting one or more desired target areas from areas of a layer of the samples; patterning an energy source so as to correspond to the target areas; and extracting energy from the patterned energy source, applying the extracted energy to the target areas such that target samples corresponding to the target areas are released from the substrate, and recovering the target samples.

The present invention is directed to a removable sample holder for analytical instruments or apparatuses that utilizes a prism. For example, sample devices of the invention can be used in a surface plasmon resonance (SPR) spectroscopy, a plasmon-waveguided resonance (PWR) spectroscopic device, as well as other spectroscopy devices known to one skilled in the art that uses a prism. The present invention is also directed to methods for using the same. The sample holder device (10) includes a sample injection port (100), a prism retainer (200) and a sample compartment base (300). Unlike conventional SPR and PWR instruments that have a built-in sample chamber, the sample holder device (10) of the present invention provides a separate sample chamber that can be readily removed and replaced. Furthermore, by allowing ready replacement of the prism the sample holder device (10) of the invention allows user to fabricate custom sensor chips.

Multidimensional liquid analysis system (10), comprising: an analysis system of first dimension (12) comprising a first separation column for the chromatographic separation of a liquid mobile phase into an efflux of first dimension (20) with an efflux rate of first dimension; a flow divider (24) for separating the outflow of first dimension (20) into a first outlet partial flow (26) and a second outlet partial flow (28) with a first pressure; a second-dimensional analysis system (14) comprising a second separation column (34) for chromatographically separating the second outlet partial stream (28) into a second-dimensional outflow (38) and an injection valve (32) for directing the samples from the second outlet partial stream (28) into the second separation column (34), wherein the injection valve (32) has an inlet opening (1) for receiving the second outlet partial stream (28), an outlet opening (6) and a first and second separate sample loop (36a, 36b), comprising flow channels that can be alternately positioned in fluidic connection with the second outlet partial stream (28) or the second separation column (34); and a flow metering device (30) for receiving the second exhaust partial flow (28) from the outlet opening (6) of the injection valve (32) along an exhaust flow path (29), wherein the flow metering device (30) comprises a valve for selectively closing or opening the exhaust flow path (29) in response to a control signal (72) from a metering control (74) programmed to allow the second exhaust partial flow (28) from the flow divider (24) at a predetermined second partial exhaust flow rate, wherein the second partial exhaust flow rate is determined by a volume of the second exhaust partial flow (28) enabled by the flow metering device (30) along the exhaust flow path (29) within a defined time interval. wherein the flow metering device (30) includes: (i) a stator (112) with a stator surface (116), a first stator inlet passage (114) extending along the outlet flow path (29) through the stator (112) and opening into the stator surface (116) through a first stator opening (118), a first discharge passage (120) extending along the outlet flow path (29) through the stator (112) and through a second stator opening (124) spaced apart from the first stator opening (118), and a second discharge passage (122) extending along a discharge path (33) through the stator (112) and opening into the stator surface (116) through a third stator opening (126); and (ii) a rotor (128) with a rotor surface (130) which is in fluid-tight contact with the stator surface (116) at an interface, wherein the rotor surface (130) includes a boat (132, 134) designed to receive a partial quantity of liquid in fluid-flow communication with the interface, wherein the rotor (128) is rotatable about an axis of rotation (136) with respect to the stator (112) in order to move the boat (132, 134) successively into several stations spaced apart about the axis, wherein a first station (138) aligns the boat (132, 134) in fluid-flow communication with the outlet flow path (29) at the first stator opening (118) and a second station (140) aligns the boat (132, 134) in fluid-flow communication with the outlet flow path (29) at the second aligns the stator opening (124), with the second and third stator openings (124, 126) being positioned at least when the boat (132, 134) is at the second station (140),are connected to each other in terms of fluid dynamics.

According to the joint detection device, a suction and spitting assembly is used for sucking liquid or spitting liquid so as to collect or separate samples, a reaction tank assembly comprises at least one reaction tank unit, the suction and spitting assembly is used for separating the collected samples to the reaction tank unit so as to prepare sample liquid, a main detection assembly is connected with the reaction tank assembly, and the main detection assembly is connected with the reaction tank assembly. The main detection assembly is used for performing main item detection on the sample liquid, and the sub-detection module is connected with a reaction tank assembly of the main detection module through a liquid path pipeline, so that a sub-item reagent provided by the sub-reagent supply assembly is conveyed to the reaction tank assembly through the sub-power assembly, and the prepared sample liquid is conveyed to the sub-detection assembly; the sub-detection assembly is used for performing sub-item detection on the sample liquid. Based on the mode, the combined detection operation of saccharification detection and blood routine examination can be realized.

The utility model discloses a fast calibration fracture mechanics extensometer, which comprises a shell, an adjustable calibration block and a fixed calibration block, a mechanics extensometer structure is arranged in the shell, the mechanics extensometer structure comprises a pressing block, an upper measuring arm is arranged below the pressing block, a lower measuring arm is arranged below the upper measuring arm, an upper measuring arm is arranged below the upper measuring arm, and a lower measuring arm is arranged below the lower measuring arm. A support is arranged under the pressing block. The upper measuring arm and the lower measuring arm deform along with the displacement of a sample notch, the resistance value of a bridge circuit changes, the deformation of the sample is measured through bridge circuit imbalance output, the initial deformation of the measuring arms provides clamping force for the extensometer, the extensometer is matched with the sample notch or a knife edge, other mounting structures are not needed, and when the sample is broken, the extensometer can be automatically separated from the sample; and when the scale distance is increased, the support with an angle is designed, so that the approximate height size of the extensometer is ensured, the size of the extensometer is reduced, the space is saved, and the problem of uncoordinated proportion is avoided.

The utility model discloses a full-automatic mass spectrum sample pretreatment workstation, which comprises a sample cup dividing module, a purification module and a transfer device, and the sample cup dividing module is positioned in a first chamber in a shell and can complete the cup dividing operation of a sample in a sample tube and the transfer of a product; the purification module and the transfer device are located in a second cavity in the machine shell, the purification module can separate and purify a target object in a sample to achieve first-time magnetic bead adsorption, and the transfer device is connected with the sample cup separation module and the purification module and can transfer the cup-separated sample into the purification module; meanwhile, the purified sample is transferred into the sample cup dividing module to be subjected to magnetic bead adsorption twice. The full-automatic mass spectrum sample pretreatment workstation adopts a three-stage magnetic separation technology to fully reduce residues of magnetic beads in a purified product, meets full-automatic pretreatment of a high-flux sample, enables an experimental process to be streamlined, standardized and normalized, reduces errors caused by manual operation, and improves the working efficiency of sample pretreatment.

This application relates to a fully automated mass spectrometry detection device. The fully automated mass spectrometry detection device includes a sample stage module, a pretreatment module, a multi-channel liquid chromatography module, and a mass spectrometry detection module. The sample stage module is adapted to interface with a production line to load samples. The pretreatment module is adapted to interface with the sample stage module to obtain samples from the sample stage module, and is used to pre-treat the samples for subsequent liquid chromatography separation. The multi-channel liquid chromatography module is adapted to interface with the pretreatment module to obtain the pre-treated samples for liquid chromatography separation. The mass spectrometry detection module is adapted to interface with the multi-channel liquid chromatography module to obtain the liquid chromatography-separated samples for mass spectrometry detection. The sample stage module, pretreatment module, multi-channel liquid chromatography module, and mass spectrometry detection module are all independent modules, with two or more modules used in combination. This application's solution can improve the equipment's scalability, ease of maintenance, adaptability to different scenarios, and work efficiency.

The application relates to a forest soil nematode separation method based on combination of Bellman funnel method and centrifugal flotation method, and relates to the field of nematode extraction.The application aims to solve the problem that traditional single separation method is difficult to consider efficiency and effect.The application provides a nematode separation method combining Bellman funnel method and centrifugal flotation method.Compared with the traditional single nematode separation method, the combined method not only improves the separation efficiency, reduces the loss and error in the operation process, but also better protects the integrity of the nematodes, ensures the purity of the separated samples, and thus provides a more accurate and reliable basis for subsequent nematode identification and counting.A forest soil nematode separation method based on combination of Bellman funnel method and centrifugal flotation method is obtained.

The invention discloses a boron isotope separation method. The separation method of the boron isotope comprises the following steps: mixing a boric acid aqueous solution with a pH regulator, regulating the pH value of the solution to 6-8, and preparing a to-be-separated sample which contains B (OH) 4 <-> enriched in 10B element; a to-be-separated sample is in contact with the graphene-loaded Fe3O4 composite material, so that the graphene-loaded Fe3O4 composite material adsorbs B (OH) 4 <-> enriched with the 10B element. In a boric acid solution, the boron element exists in forms such as B (OH) 4-and B (OH) 3, and a 10B isotope is more inclined to form a B (OH) 4-form than a 11B isotope. Fe3O4 is loaded on the surface of graphene, the graphene can inhibit aggregation of Fe3O4 nanoparticles, and meanwhile, the graphene has excellent electron conduction performance and an efficient molecular transmission channel, so that the adsorption performance of the Fe3O4 component to B (OH) 4-can be enhanced, the efficient enrichment and separation of 10B isotopes under mild conditions are realized, and the separation factor of the 10B isotopes is increased.

1. Name of the product in this design: Centrifuge. 2. Purpose of this design: For separating samples such as blood and body fluids. 3. The key design feature of this product is its shape. 4. The image or photograph that best illustrates the design's key points: a 3D model.