Transfer case for protecting a sample
By designing a transfer box that includes a drawer and a limiting compartment, the principle of negative pressure is used to achieve safe transfer of samples from the glove box to the electron microscope, solving the problem of sample damage during transfer. This design is applicable to various electron microscopes.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- CHANGZHOU LONGSKEPU ELECTRONIC TECH CO LTD
- Filing Date
- 2025-07-31
- Publication Date
- 2026-05-29
AI Technical Summary
Existing technologies make it difficult to efficiently and conveniently transfer samples from a glove box to the vacuum environment of an electron microscope for analysis without damaging the samples, and large electron microscopes cannot be used inside a glove box.
Design a transfer box comprising a drawer and a limiting chamber. It automatically opens using the principle of negative pressure, the drawer pops out in a vacuum, and the sample is protected by the limiting chamber, ensuring that the sample is not damaged during the transfer process and can be imaged in an electron microscope.
It enables safe and reliable sample transfer, avoids sample reaction in air, is suitable for various electron microscopes, and does not require changes to the glove box or microscope structure, making it convenient and quick.
Smart Images
Figure CN224297688U_ABST
Abstract
Description
Technical Field
[0001] This invention belongs to the field of sample protection technology for electron microscopes, and more specifically relates to a transfer box for protecting samples. Background Technology
[0002] In scientific research and industry, many materials, due to their extremely high chemical reactivity or extreme sensitivity to the environment, must be synthesized, processed, handled, packaged, and transferred in an inert atmosphere glove box (usually high-purity nitrogen or argon, with water and oxygen content <1 ppm). Once these materials are exposed to air (oxygen, water vapor, carbon dioxide, etc.) or moisture, they will rapidly undergo irreversible chemical reactions or physical changes, leading to failure, decomposition, combustion, or even explosion. Major material categories and typical examples where operation in a glove box is necessary or strongly required include: Alkali metals and their alloys: Lithium (Li): lithium-ion battery anode material, lithium metal, organolithium reagents (such as n-butyllithium). Lithium reacts violently with nitrogen and moisture in the air. Sodium (Na), Potassium (K): sodium / potassium battery materials, strong reducing agents. Surfaces oxidize rapidly; reacts violently with water. Organometallic compounds: such as metallocene catalysts Cp₂TiCl₂, Cp₂ZrCl₂, Metallocenes, etc. Many are sensitive to air and are important catalysts for olefin polymerization. In summary, when exposure to normal environments would lead to the destruction of a material's chemical structure, a sharp decline in its physical properties, failure, the generation of hazards (combustion and explosion), or the introduction of intolerable impurities, it is essential to operate within a strictly controlled glove box. This has become standard practice in fields such as advanced battery materials (especially solid-state batteries), air-sensitive catalysis / synthesis, and cutting-edge electronic / optoelectronic materials. Existing solutions for transferring samples requiring protection via glove boxes are limited by the size and environmental constraints of the glove box, preventing the use of many conventional analytical methods and instruments, such as high-resolution electron microscopes.
[0003] However, electron microscopy structural analysis currently possesses core advantages: ultra-high resolution: TEM can reach 0.05 nm (atomic level), and SEM is hundreds of times better than optical microscopes, etc. Furthermore, its comprehensive analytical capabilities are excellent: morphology, crystal structure, chemical composition, elemental distribution, electronic structure, and other multi-dimensional information can be obtained from the same location and in the same experiment; strong micro-area / nanoscale analysis capabilities: focusing on micrometer, nanometer, and even atomic scale regions, revealing the microscopic origins of macroscopic properties. It can achieve dynamic in-situ observation, such as real-time tracking of the structural evolution of materials under external fields, establishing a direct link between "structure-performance-process," and has wide applicability, such as analyzing almost all types of solid materials including metals, ceramics, semiconductors, polymers, composite materials, and biomaterials. To analyze products routinely stored in glove boxes using an electron microscope, the samples need to be removed from the glove box and placed inside the microscope. Without protection, the samples will undoubtedly be damaged. Reacting with oxygen, water, and other components in the air will cause significant changes in the sample's structure and properties, making it no longer the original morphology of the sample being observed.
[0004] Some technologies consider placing electron microscopes directly into glove boxes. However, this presents two problems. First, limited by the size of the glove box and the surrounding environment, only simple benchtop SEMs can fit inside; larger and more powerful floor-standing SEMs cannot. Second, for routine samples, using an electron microscope placed in a glove box requires a complex exchange chamber process, which limits the usability and convenience of these expensive microscopes.
[0005] Therefore, there is a need to provide optimized and improved solutions for protecting samples, ensuring that the samples are not damaged, while still allowing for analysis and research using instruments such as electron microscopes. Such solutions have become a technical challenge. Utility Model Content
[0006] (a) Technical problems to be solved
[0007] To address the aforementioned shortcomings, this invention aims to at least solve the technical problem of how to optimize the more efficient and convenient transfer of samples from the glove box into the vacuum environment of an electron microscope under effective protection; furthermore, it aims to solve the technical problem of how to design a transfer box to protect the sample and facilitate its removal and transport.
[0008] (II) Technical Solution
[0009] To address the aforementioned technical problems, this utility model proposes a transfer box for protecting samples, comprising: a drawer that can slide between an outer compartment and a limiting compartment of the transfer box; an outer compartment that is fastened to the outside of the drawer; and a limiting compartment that is fitted and connected to the outer compartment and restricts the drawer's sliding position when the transfer box is placed in the electron microscope vacuum and opened. The concave structure inside the limiting compartment matches the shape of the drawer's exterior. The outer compartment accommodates the internal space of the drawer, which matches the shape of the drawer's exterior and is larger than the drawer's volume. A sample is positioned in the drawer, which can be opened or closed. The drawer automatically opens using the principle of negative pressure when the transfer box is placed in the electron microscope vacuum. In the open state, the drawer pops out, and the sample, which is fixed in the drawer mounting position, is exposed through the opening above the limiting compartment and is confined within the limiting compartment to be irradiated by an electron beam for electron microscopy imaging.
[0010] The drawer contains a sample and can be opened or closed. It also includes the following features: closing the drawer when the sample is taken out of the handheld camera and placed into the transfer box or when it is taken out of the electron microscope vacuum environment. In the closed state, the drawer is tucked back into the outer chamber, and an elastic sealing ring is provided on the side of the drawer that pops out and is close to the hollow side of the outer chamber, so as to seal the sample in the sealed chamber and prevent the outside gas from entering.
[0011] The drawer pop-out mechanism includes: dedicated guide wheels on two sides of the drawer, which cooperate with slide rails or grooves on two parallel and opposite sides of the outer compartment to smoothly slide or roll the guide wheels, open the drawer, and allow the sample to enter the limiting compartment. The sample in the drawer can be observed through the opening on the top surface of the limiting compartment. The end face of the limiting compartment away from the outer compartment is equipped with a limiting screw to restrict the opening position.
[0012] The limiting chamber also includes a dovetail groove with a protruding bottom for connecting to the electron microscope sample stage.
[0013] It also includes: the outer compartment is a hollow cuboid box, and the inner walls of the two parallel sides formed by the long side and the height side are designed with at least two slide rails that cooperate with the drawer or at least two grooves that match the drawer guide wheels.
[0014] This also includes: two corresponding parallel top and bottom surfaces formed by the long and wide sides of the cuboid box, the top surface being open and the bottom surface being closed and snapping onto the drawer; four symmetrical through-holes at the symmetrical corners of the four edges of the top surface, through which screws are inserted to connect and fix the outer compartment and the limiting compartment; and / or, of the two corresponding parallel surfaces formed by the wide and high sides of the cuboid box, one is closed and the other is open, and when open, the drawer pops out from the open side of the outer compartment into the limiting compartment, wherein the open side of the open side... The shape matches the shape of the surface that pops out when the drawer is open, and the size and width of the cutout shape are just enough for the drawer to pop out. The area of the cutout shape is close to and larger than the area of the surface that pops out of the drawer; and / or, two parallel and opposite sides of the cuboid box, which are provided with slide rails or grooves, each extend a portion evenly in the direction in which the drawer pops out, so that the outer walls of the two parallel and opposite sides of the limiting compartment are attached to and locked onto the inner walls of the two extended sides, and the cutout shape of the cuboid box abuts against and fits against the first side of the limiting compartment.
[0015] This also includes: a second side of the limiting compartment, which is parallel to the first side and has a hollow shape that is far from the outer compartment, has an opening that matches the shape of the side of the drawer that pops out first, and a limiting screw is provided on the lower outer side or side of the opening to prevent the drawer from popping out too much; and / or, an opening on the top surface of the limiting compartment, the size of which is adapted to the size of the sample placement area when the drawer pops out or to the size of the overall area of the drawer popping out, so as to expose the sample and ensure complete imaging analysis by electron microscopy; and a bottom surface that is parallel to the top surface of the limiting compartment and is sealed, forming a shape that matches the outer contour of the popped-out drawer.
[0016] This also includes: a sample mounting position is set near the center of the hollow drawer. When the drawer is open, the sample mounting position carries the mounted sample out to the limiting compartment and exposes the sample placed in the sample mounting position in the drawer through the opening on the top surface of the limiting compartment.
[0017] This also includes: the first side of the drawer that pops out first when the drawer is open has a sealing ring mounting position, the shape of which matches the shape of the first side of the drawer and the sealing ring is installed thereon.
[0018] This also includes: around the sample mounting position located near the center of the hollow drawer, on the inner wall of one side of the field edge or on the inner wall of the two opposite parallel long sides, there are protruding sample fixing positions. After the sample is placed in the sample mounting position, it is fixed by the sample fixing positions on the side to prevent movement.
[0019] (III) Beneficial Effects
[0020] This invention features an improved sample transfer box design that is convenient, quick, and requires no modification to the electron microscope or interference with its working environment. It also eliminates the need to alter the glove box, achieving safe, reliable, effective, and protective sample transfer. Attached Figure Description
[0021] Figure 1 This is a schematic diagram of the outer compartment of an embodiment of the transfer box of this utility model;
[0022] Figure 2 This is a schematic diagram of the drawer structure of one embodiment of the transfer box of this utility model;
[0023] Figure 3 This is a schematic diagram of the main structure of the transfer box in the closed state, which is an embodiment of the transfer box of this utility model, consisting of an outer compartment, a drawer, and a limiting compartment.
[0024] Figure 4 This is a schematic diagram of the main structure of the transfer box in the open / open state, which is an embodiment of the transfer box of this utility model, showing the outer compartment, drawer and limiting compartment assembly.
[0025] Figure 5 This is a longitudinally cut side sectional view of the transfer box in the open / open state, which is an embodiment of the transfer box of this utility model, with the outer compartment, drawer and limiting compartment assembled. Detailed Implementation
[0026] In the description of specific embodiments, detailed descriptions of structures, performance, effects, or other features are provided to enable those skilled in the art to fully understand the embodiments. However, this does not preclude those skilled in the art from implementing this utility model under specific circumstances with technical solutions that do not contain the aforementioned structures, performance, effects, or other features.
[0027] The same reference numerals in the accompanying drawings denote the same or similar elements, components, or parts, and therefore repeated descriptions of the same or similar elements, components, or parts may be omitted below. It should also be understood that although terms such as first, second, third, etc., indicating designations, may be used herein to describe various devices, elements, components, or parts, these devices, elements, components, or parts should not be limited by these terms. That is, these terms are only used to distinguish one from another. For example, a first device may also be referred to as a second device, without departing from the essential technical solution of this utility model. Furthermore, the terms "and / or" and "and / or" refer to all combinations including any one or more of the listed items.
[0028] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings.
[0029] Figure 1 This is a schematic diagram of the outer compartment structure of an embodiment of the transfer box used to protect samples in this application.
[0030] In one specific embodiment, the transfer box is a hollow container, preferably a drawer structure. In one example, the drawer structure includes an outer compartment 10 and a hollow drawer 20 that can slide along a side rail of the outer compartment. Furthermore, the transfer box also includes an outer compartment, a drawer, and the transfer box itself. When the drawer is in the open state under electron microscopy imaging conditions, it slides to a semi-open limiting compartment 30, exposing the sample inside the drawer, facilitating electron beam irradiation and electron microscopy imaging without requiring manual sample removal in a vacuum.
[0031] The outer compartment of the transfer box 10 Figure 1 As shown, there is a hollow box 110 with a semi-open structure, preferably a cuboid box. For example:
[0032] The rectangular box 110 is hollow, and the inner walls of the two sides 120 formed by the long side and the height corresponding to the sides are designed with slide rails that cooperate with the drawer 20 or at least two slide rails or grooves 121 that match the wheels 210 (such as at least two wheels) of the drawer 20. Preferably, slide rails or grooves 121 are provided on the upper and lower sides of the inner wall.
[0033] The long and wide sides of the cuboid box 110 have two side surfaces, or top surface (empty) and bottom surface 130 (which snaps into the drawer 20). One side is empty and the other side is closed. The four corners of the four edges of the empty side have four diagonally symmetrical through screw holes 131, through which screws 132 can be inserted for fixing, such as connecting and fixing the outer compartment 10 and the limiting compartment 30.
[0034] In the rectangular box 110, one of the two faces 140 formed by the corresponding sides of the width and height is closed, and the other is open. In the open state, the drawer 20 pops out from the open position of the outer compartment 10 with the sample into the limiting compartment 30; the shape of the open part matches the shape of the open side of the drawer 20. For example, if the pop-out surface of the drawer 20 is close to an ellipse, then the open side is also elliptical. The size and width of the open shape are just enough for the drawer to pop out. The area of the open shape is close to and larger than the area of the pop-out surface of the drawer 20, or in other words, the open shape is wider than the width of the pop-out surface of the drawer 20, which facilitates pop-out.
[0035] The two sides 120 of the cuboid box 110, which are provided with rails or grooves 121, extend in the direction in which the drawer 20 pops out when the transfer box is opened, and the outer walls of the left and right sides 350 of the limiting compartment 30 are locked in the inner walls of the two sides 120 with rails or grooves 121. The surface where the hollow part is located abuts the first side 310 of the limiting compartment 30.
[0036] Preferably, the limiting chamber has a hexahedral structure, and more preferably, as shown in the example below. Figures 3-5 As shown, the outer walls of the two sides 350 of the limiting compartment 30 are close to or in other words to the inner walls of the extended sides 120 of the cuboid box 110, and are closely fitted to the inner sides / inner walls of the extended sections of the two sides 120 of the cuboid box 110.
[0037] Preferably, the top surface of the limiting compartment 30 is hollowed out, slotted, or open, with a size adapted to the sample placement area when the drawer 20 is opened and the sample is ejected, or adapted to the size of the ejection area of the drawer 20, exposing the sample to ensure complete imaging and analysis under the electron microscope. The bottom surface of the limiting compartment 30 is sealed parallel to the top surface, and the overall shape matches the shape of the ejected drawer 20. In particular, it matches the drawer shape of the drawer 20 with its curved edges. More preferably, both the cuboid box 110 and the limiting compartment 30 match the cuboid shape of the drawer 20 with its curved edges, forming a recessed internal space that perfectly accommodates the shape of the drawer 20.
[0038] The limiting compartment 30 has a second side 320, which is parallel to the first side 310 and is the side 140 of the pop-out hollow surface away from the outer compartment 10, which has a shape similar to the side of the drawer 20 that pops out first. It matches the opening, such as an oval shape, and a limiting screw 330 is provided on the lower outer side or side of the opening to prevent the drawer 20 from popping out too much or falling off.
[0039] Preferably, the width of the lower surface of the limiting chamber 30, which is parallel to the hollowed-out or slotted upper surface, matches the width of the outer chamber 10. Furthermore, a mounting platform, such as a dovetail groove 340, protrudes from the outer side of the lower surface and the bottom of the limiting chamber 30, which can be connected to the electron microscope sample stage. Figure 3 , 4 5.
[0040] like Figure 2 As shown, drawer 20 is placed inside outer compartment 10. The non-empty bottom surface of outer compartment 10 is placed on top of drawer 20, which holds the sample. The open top surface of outer compartment 10 is located below drawer 20. Outer compartment 10 encloses drawer 20 within cuboid box 110 in a closed state. In the open state, the side 210 of drawer 20 with sealing ring mounting position 230, i.e., the first side 210 of drawer 20, pops out from the matching hollow side of cuboid box 110, such as the elliptical opening side, and is held in place by limiting screw 330. The sample mounting position 220, which holds or fixes the sample, slides along the slide rail to the limiting position 30 and exposes the sample placed in sample mounting position 220 in drawer 20 through the top surface of the opening of limiting position 30.
[0041] In one specific embodiment of drawer 20, the drawer 20 is shaped to match and be accommodated by the outer compartment 10, preferably like a rectangular hollow container. Furthermore, the edges are rounded to facilitate sliding and reduce friction. The first side 210 of drawer 20 has a sealing ring mounting position 230, the shape of which matches the shape of the first side 210, such as an ellipse, for mounting the sealing ring. The second side 240, parallel and opposite to the first side 210, is sealed.
[0042] Preferably, the two long sides 251 and 252 perpendicular to the first side 210 and the second side 240 slide on the slide rails on the inner walls of the two sides inside the outer compartment 10. Preferably, at least two drawer wheels 253 are respectively provided on the two long sides 251 and 252 near the outer side of the second side 240. The wheels 253 move and roll by placing them in the grooves / slide rails provided on the inner walls of the two sides of the outer compartment 10. When opened, the wheels move and pop out into the limiting compartment 30, or when closed, they return to the outer compartment 10. In the closed state, the side cross-sectional view of the transfer box is as shown. Figure 5 As shown.
[0043] Preferably, sample fixing positions 260 are provided on the inner walls of the two opposite parallel long side sides 251 and 252 of the drawer 20, or only one side inner wall sample fixing position 260 may be provided. A sample mounting position 220 is provided in the center of the drawer. The sample is placed in the sample mounting position 220 as shown in the bottom cylindrical space area of the figure, and then fixed by the sample fixing position on the side to prevent movement.
[0044] Furthermore, the sealing ring mounting position 230 has an opening shaped like a keyhole.
[0045] In one embodiment where a transfer box is in operation, the transfer box can be opened and closed. For example... Figure 4 As shown, in the open state, drawer 20 is pulled out / popped out, and sample 40, which is fixed in drawer mounting position 220 and fixed in fixing position 260, is exposed through the opening above limiting chamber 30. Confined within limiting chamber 30, it does not move randomly and is then irradiated by an electron beam, allowing for imaging with an electron microscope. Figure 4 As shown, when the drawer 20 is closed, it is pushed back into the outer compartment 10, and the sample is sealed in the sealed chamber, thus protecting the sample.
[0046] Preferably, drawer 20 is designed with dedicated guide wheels to make opening smoother; and drawer 20 is designed with dedicated limiting devices such as limiting compartment 30 and its structure and limiting screws to ensure that opening will not exceed the range; drawer 20 can be automatically opened inside an electron microscope by using the principle of negative pressure.
[0047] Preferably, when closed, the chamber (outer compartment 10, limiting compartment 30) of the transfer box and the drawer 20 are sealed with an elastomer sealing ring, which can prevent external gas from entering the chamber through the gap and contaminating the sample.
[0048] Preferably, the bottom of the transfer box is designed with a dovetail groove 340, which can be connected to the sample stage of the electron microscope.
[0049] In the description of specific embodiments, detailed descriptions of structures, performance, effects, or other features are provided to enable those skilled in the art to fully understand the embodiments. However, this does not preclude those skilled in the art from implementing this utility model under specific circumstances with technical solutions that do not contain the aforementioned structures, performance, effects, or other features.
[0050] The same reference numerals in the accompanying drawings denote the same or similar elements, components, or parts, and therefore repeated descriptions of the same or similar elements, components, or parts may be omitted below. It should also be understood that although terms such as first, second, third, etc., indicating designations, may be used herein to describe various devices, elements, components, or parts, these devices, elements, components, or parts should not be limited by these terms. That is, these terms are only used to distinguish one from another. For example, a first device may also be referred to as a second device, without departing from the essential technical solution of this utility model. Furthermore, the terms "and / or" and "and / or" refer to all combinations including any one or more of the listed items.
[0051] The specific embodiments described above further illustrate the purpose, technical solution, and beneficial effects of this utility model. It should be understood that this utility model is not inherently related to any specific computer, virtual device, or electronic device, and various general-purpose devices can also implement this utility model. The above descriptions are merely specific embodiments of this utility model and are not intended to limit this utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.
Claims
1. A transfer box for protecting samples, characterized in that, include: A drawer that can slide between the outer compartment and the limiting compartment of the transfer box; an outer compartment that is fastened to the outside of the drawer; and a limiting compartment that is fitted to the outer compartment and restricts the drawer from sliding out when the transfer box is placed in the vacuum of the electron microscope and opened. The concave structure inside the limiting compartment matches the external shape of the drawer; The outer compartment accommodates the internal space of the drawer, matching the external shape of the drawer and being larger than the drawer's volume. The sample is positioned in the drawer and can be opened or closed. The drawer opens automatically using the principle of negative pressure when the transfer box is placed in the vacuum of the electron microscope. When it is open, the drawer pops out and the sample, which is fixed in the drawer mounting position, is exposed through the opening above the limiting chamber and is confined in the limiting chamber to be irradiated by the electron beam for electron microscopy imaging.
2. The transfer box as described in claim 1, characterized in that, The drawer contains a sample and can be opened or closed. It also includes the following features: closing the drawer when the sample is taken out of the handheld camera and placed into the transfer box or when it is taken out of the electron microscope vacuum environment. In the closed state, the drawer is tucked back into the outer compartment, and an elastic sealing ring is provided on the side of the drawer that pops out and is close to the hollow side of the outer compartment to seal the sample in the sealed chamber and prevent external gas from entering.
3. The transfer box as described in claim 1, characterized in that, The drawer pops out including: The drawer has dedicated guide wheels on both sides that cooperate with the slide rails or grooves on the two parallel and opposite sides of the outer compartment. The guide wheels slide or roll smoothly. When the drawer is opened, the sample is carried into the limiting compartment. The sample in the drawer can be observed through the opening on the top surface of the limiting compartment. The end face of the limiting compartment away from the outer compartment is equipped with a limiting screw to restrict the opening position.
4. The transfer box as described in claim 1, characterized in that, The limiting chamber also includes a dovetail groove protruding from the bottom for connecting to the electron microscope sample stage.
5. The transfer box as described in claim 1, characterized in that, Also includes: The outer compartment is a hollow cuboid box. The inner walls of the two parallel sides formed by the long side and the height side are designed with at least two slide rails that cooperate with the drawer or at least two grooves that match the drawer guide wheels.
6. The transfer box as described in claim 5, characterized in that, Also includes: The rectangular box has two parallel top and bottom surfaces formed by its long and short sides. The top surface is open, while the bottom surface is closed and snaps onto the drawer. The four corners of the four edges of the top surface have four symmetrical through-hole screws for screws to connect and secure the outer compartment to the retaining compartment; and / or, In a cuboid box, one of its two parallel faces, formed by the sides corresponding to its width and height, is closed, while the other is open. When open, the drawer pops out from the open side of the outer compartment into the retaining compartment. The shape of the open side matches the shape of the side where the drawer pops out when open, and the size and width of the open side are just sufficient for the drawer to pop out. The area of the open side is close to and larger than the area of the side where the drawer pops out; and / or, The two parallel sides of the cuboid box, each equipped with a slide rail or groove, extend evenly in the direction the drawer pops out. The outer walls of the two parallel sides of the limiting compartment are attached to and locked onto the inner walls of the two extended sides. The hollowed-out surface of the cuboid box abuts against and fits against the first side of the limiting compartment.
7. The transfer box as described in claim 6, characterized in that, Also includes: The limiting compartment has an opening on its second side, which is parallel to and opposite to the first side and located away from the outer compartment, and the opening matches the shape of the side from which the drawer first pops out. A limiting screw is provided below or on the side of the outermost part of the opening to prevent the drawer from popping out excessively and falling off; and / or, The top surface of the limiting chamber has an opening whose size is adapted to the size of the sample placement area when the drawer pops out or to the size of the overall area when the drawer pops out, so as to expose the sample and ensure complete imaging and analysis by electron microscopy. The bottom surface, which is parallel to the top surface of the limiting compartment, is sealed, forming a shape that matches the outer contour of the pop-out drawer.
8. The transfer box as described in claim 1, characterized in that, Also includes: A sample mounting position is set near the center of the hollow drawer. When the drawer is open, the sample mounting position, carrying the mounted sample, pops out into the limiting compartment and exposes the sample placed in the sample mounting position in the drawer through the opening on the top surface of the limiting compartment.
9. The transfer box as described in claim 1, characterized in that, Also includes: When the drawer is open, the first side that pops out first has a sealing ring mounting position. The shape of the sealing ring mounting position matches the shape of the first side of the drawer and the sealing ring is installed thereon.
10. The transfer box as claimed in claim 1, characterized in that, Also includes: Around the center of the hollow drawer, there is a sample mounting position. On the inner wall of one side of the drawer or on the inner wall of the two opposite parallel long sides, there are protruding sample fixing positions. After the sample is placed in the mounting position, it is fixed by the sample fixing positions on the side to prevent movement.