A test tube rack for making an inclined plane culture medium
By designing a stacked test tube rack structure and a stopper fixing method, the problems of test tubes rolling in the slant culture medium and the growth of miscellaneous bacteria were solved, ensuring the consistency of the slant area and the accuracy of the experiment.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- GUANGDONG ZHONGWEI ENVIRONMENTAL PROTECTION BIOTECH CO LTD
- Filing Date
- 2025-08-04
- Publication Date
- 2026-07-07
AI Technical Summary
Traditional test tubes are prone to rolling during slant culture preparation, which can deform the culture medium. Randomly placed stoppers can also lead to the growth of miscellaneous bacteria, affecting the accuracy and efficiency of experimental results.
Design a test tube rack for making slant culture media. It adopts an upper and lower box structure with stacked upper and lower boxes. Through the design of horizontal sliding connection and upper and lower grooves, it ensures that the slant area of the test tubes is consistent and fixes the stopper in the upper box to avoid the growth of miscellaneous bacteria.
This achieves uniformity and stability of the slant area in test tubes, reduces the risk of contamination by other microorganisms, and improves the flexibility and efficiency of experiments.
Smart Images
Figure CN224462803U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of test tube racks, and specifically discloses a test tube rack that can be used to produce slant culture media. Background Technology
[0002] Slant agar is a widely used experimental material in microbiology, primarily for the purification, preservation, and cultivation of microbial strains. Its preparation typically involves pouring molten solid culture medium into a test tube, tilting the tube before it solidifies, and allowing the medium to cool and form a slant. Due to its large surface area, slant agar provides more space for microbial growth, facilitating observation of microbial growth, and is therefore widely used in microbiology laboratories.
[0003] However, in traditional methods, test tubes are typically placed on long wooden strips to achieve an inclined position. Since test tubes are mostly cylindrical, they are prone to rolling, causing the culture medium to deform during cooling and making it impossible to guarantee a uniform area of the slant. Furthermore, if the stoppers used to plug the test tube openings are left unattended, they can easily breed contaminants, thus affecting the accuracy and reliability of the experimental results. These problems not only increase the complexity of the experimental procedure but may also lead to experimental failure and reduce experimental efficiency. Utility Model Content
[0004] The purpose of this invention is to overcome the shortcomings of the prior art and provide a test tube rack that can be used to produce slant culture media.
[0005] This utility model discloses a test tube rack that can be used for the preparation of slant culture media, adopting the following technical solution:
[0006] A test tube rack for making slant culture media includes an upper box and a lower box stacked on top of each other. The bottom of the upper box has several first test tube holes, and the top of the upper box has a perforated plate with several second test tube holes corresponding to the first test tube holes. The upper box and the lower box are connected by a connecting structure and are slidably connected laterally. The upper box has a side opening on one side along its sliding direction, and the bottom edge of the side opening has several upper grooves for positioning the test tube body. The bottom of the lower box on the side opposite the side opening has several lower grooves for supporting the bottom of the test tube.
[0007] Preferably, the perforated plate is detachably connected to the upper box.
[0008] Preferably, the top of the side opening of the upper box is provided with a placement boss, and the top side of the upper box is provided with a slot extending along the direction of the placement boss. One end of the perforated plate is placed on the placement boss, and the other end of the perforated plate is provided with a protrusion, which is inserted into the slot.
[0009] Preferably, a wide groove is provided on one bottom side of the upper box, the wide groove communicating with the inner cavity of the upper box and allowing the perforated plate to be inserted.
[0010] Preferably, the bottom of one side of the upper box is provided with a support column, the bottom end of the support column is flush with the bottom end of the lower box, and the lower box is provided with a groove for accommodating the support column.
[0011] Preferably, the bottom end of the support column is provided with anti-slip rubber.
[0012] Preferably, the connection structure includes: parallel upper guide rails on both sides of the bottom of the upper box, and parallel lower guide rails on both sides of the top of the lower box, wherein the upper guide rails and the lower guide rails are slidably connected.
[0013] Preferably, the upper groove and / or lower groove is one of a circular groove, a square groove, or a triangular groove.
[0014] Compared with the prior art, the present invention has at least the following beneficial effects:
[0015] This invention utilizes a stacked upper and lower box structure, combined with a lateral sliding connection and upper and lower grooves, to adjust the relative positions of the upper and lower boxes. This allows for the preparation of slant culture media from test tubes and the creation of specific slant areas as needed. It ensures that multiple test tubes of the same size have the same slant area during slant preparation, reducing factors that may affect the experiment. While waiting for the culture medium to cool, the test tube stoppers are placed in the upper box, reducing the risk of microbial growth due to stopper movement. When slant culture medium preparation is not required, the components can be assembled into a test tube rack to meet the needs of conventional test tube placement, thus greatly improving the flexibility and applicability of the test tube rack and better meeting the test tube placement requirements under different experimental conditions. Attached Figure Description
[0016] Figure 1 This is a schematic diagram showing the vertical placement of test tubes in the test tube rack according to this embodiment;
[0017] Figure 2 This is a schematic diagram of the tilted culture medium preparation state of the test tube rack in this embodiment;
[0018] Figure 3 for Figure 2 Another perspective illustration;
[0019] Figure 4 This is a schematic diagram of the assembly of the upper box and the orifice plate of the test tube rack in this embodiment;
[0020] Figure 5 This is a schematic diagram of the assembly of the upper and lower boxes of the test tube rack in this embodiment.
[0021] Explanation of icon numbers:
[0022] 1. Lower box; 11. Lower groove; 12. Groove; 13. Lower guide rail; 2. Upper box; 21. First test tube hole; 22. Upper groove; 23. Placement boss; 24. Slot; 25. Wide groove; 26. Support column; 261. Anti-slip rubber; 27. Upper guide rail; 3. Hole plate; 31. Second test tube hole; 32. Protrusion. Detailed Implementation
[0023] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments.
[0024] This embodiment discloses a test tube rack that can be used for preparing slant culture media, referring to... Figure 1-5 The upper box 2 and the lower box 1 are stacked on top of each other. The bottom of the upper box 2 has several first test tube holes 21. The top of the upper box 2 has a perforated plate 3. The perforated plate 3 has several second test tube holes 31 that are directly opposite to the first test tube holes 21. Both the first test tube holes 21 and the second test tube holes 31 are round holes with a diameter slightly larger than the diameter of the test tube. The upper box 2 and the lower box 1 are connected by a connecting structure and are slidably connected laterally. The upper box 2 has a side opening on one side along its sliding direction. The bottom edge of the side opening has several upper grooves 22 for positioning the test tube body. The bottom of the lower box 1 on the side opposite to the side opening has several lower grooves 11 for supporting the bottom of the test tube.
[0025] By adopting the above structure, after the upper box 2 and the lower box 1 slide laterally relative to each other, see... Figure 2 This arrangement creates a position for tilting test tubes between the upper groove 22 of the upper box 2 and the lower groove 11 of the lower box 1. The bottom of the test tube rests on the lower groove 11 of the lower box 1, while the body of the test tube is positioned correspondingly on the upper groove 22 of the upper box 2. This allows for tilting of the test tubes, suitable for preparing slant culture media. By adjusting the relative positions of the upper box 2 and the lower box 1, the degree of tilt along the line connecting the upper groove 22 and the lower groove 11 can be varied to accommodate test tubes of different lengths or to prepare slant culture media for various sizes of test tubes. It can also be used to create specific slant areas as needed, thus improving the flexibility, practicality, and applicability of the test tube rack. A stopper to plug the test tube opening can be placed in the upper box 2 to prevent the growth of contaminants caused by random placement. When not preparing slant culture media, the components can be assembled as follows: Figure 1 The test tube rack can meet the needs of conventional test tube placement.
[0026] As a preferred embodiment, the well plate 3 is detachably connected to the upper box 2. This design facilitates cleaning and replacement of the well plate, while also providing more overhead operating space for the upper box 2 after disassembly, thus improving the ease of operation when adjusting the test tube rack to a slant culture medium state. Specifically, see... Figure 3The top of the side opening of the upper box 2 is provided with a placement boss 23. The top side of the upper box 2 is provided with a slot 24 extending along the direction of the placement boss 23. One end of the perforated plate 3 is placed on the placement boss 23, and the other end of the perforated plate 3 is provided with a protrusion 32. The protrusion 32 is inserted into the slot 24. When it is necessary to place the test tube vertically, the perforated plate 3 can be assembled on the top of the upper box 2 so that the second test tube hole 31 of the perforated plate 3 is aligned with the first test tube hole 21 of the upper box 2, and the test tube can be placed vertically. This connection method is simple and reliable, facilitates the quick installation and disassembly of the perforated plate, and improves the convenience of operation.
[0027] As a preferred embodiment, a wide groove 25 is provided on one side of the bottom of the upper box 2. The wide groove 25 communicates with the inner cavity of the upper box 2 and allows the well plate 3 to be inserted. When the test tube rack needs to be adjusted to the slant culture medium state, the well plate 3 can be removed from the top of the upper box 2 and inserted into the upper box 2 through the wide groove 25 and placed against the bottom plate of the upper box 2. This design not only facilitates the storage of the well plate 3 and avoids the possible loss or damage caused by having nowhere to put the well plate 3 after disassembly, but also makes the test tube rack more neat and orderly when adjusted to the slant culture medium state, improving the overall ease of use and space utilization of the test tube rack.
[0028] As a preferred embodiment, a support post 26 is provided on one side of the bottom of the upper box 2. The bottom end of the support post 26 is flush with the bottom end of the lower box 1. The lower box 1 has a groove 12 for accommodating the support post 26. When the upper box 2 slides directly above the lower box 1, the support post 26 of the upper box 2 is embedded in the groove 12 of the lower box. The design of the support post 26 can enhance the stability of the upper box 2 and prevent the upper box 2 from shaking during operation, thereby ensuring the stable placement of the test tubes.
[0029] As a preferred embodiment, the bottom of the support column 26 is provided with anti-slip rubber 261. The design of anti-slip rubber 261 serves two purposes: firstly, when the test tube rack is adjusted to a vertical position, it improves the stability of the test tube rack on the workbench, prevents the entire test tube rack from sliding, and ensures the safety and accuracy of experimental operations; secondly, when the test tube rack is adjusted to a slanted culture medium position, it can prevent the upper box 2 from sliding relative to the lower box 1, thereby better maintaining their relative positions and allowing the slanted culture medium to better maintain its slanted position.
[0030] As a preferred option, see Figure 5 The connection structure in this embodiment includes: parallel upper guide rails 27 on both sides of the bottom of the upper box 2, and parallel lower guide rails 13 on both sides of the top of the lower box 1, with the upper guide rails 27 and lower guide rails 13 slidingly connected. This guide rail connection structure makes the relative movement between the upper box 2 and the lower box 1 more stable, the operation smoother, and also facilitates precise adjustment of the tilt angle of the test tube.
[0031] As a preferred embodiment, the upper groove 22 and / or the lower groove 11 is a circular groove, a square groove, or a triangular groove. In this embodiment, the upper groove 22 and the lower groove 11 are preferably triangular grooves, as triangular grooves are more suitable for test tubes of different diameters and sizes, thus improving the applicability of the test tube rack.
[0032] The working principle of the test tube rack used in this scheme for preparing slant culture media is as follows:
[0033] (1) Vertical placement of test tubes:
[0034] Assemble the upper box 2 and the lower box 1, so that the upper guide rail 27 of the upper box 2 and the lower guide rail 13 of the lower box 1 are assembled and slid together, and the upper box 2 is slid to a position directly above the lower box 1. At the same time, insert the perforated plate 3 into the slot 24 of the upper box 2, so that the second test tube hole 31 of the perforated plate 3 and the first test tube hole 21 of the upper box 2 are aligned one by one. At this time, the test tubes pass through the second test tube hole 31 of the perforated plate 3 and the first test tube hole 21 of the upper box 2 in sequence, so that they can be placed vertically in the test tube rack, which meets the requirements of conventional test tube placement.
[0035] (2) Preparation status of tilted culture medium:
[0036] Slide the upper box 2 to a position offset from the lower box 1. Then remove the perforated plate 3 from the top of the upper box 2. The perforated plate 3 can be inserted into the wide groove 25 and stored at the bottom of the upper box 2. According to the length of the test tube or the required slope area, move the upper box 2 to the desired position. With the help of the weight of the upper box 2 and the anti-slip adhesive 261, the upper box 2 and the lower box 1 maintain a relative position. Then pour the culture medium into the test tube. Finally, place the test tube in the recess of the lower groove 11 and the upper groove 22 to fix the tilted position and complete the preparation of the tilted culture medium.
[0037] The technical solution provided by this utility model has been described in detail above. Specific examples have been used to illustrate the principle and implementation of this utility model. The description of the above embodiments is only for the purpose of helping to understand the method and core idea of this utility model. At the same time, for those skilled in the art, there will be changes in the specific implementation and application scope based on the idea of this utility model. Therefore, the content of this specification should not be construed as a limitation of this utility model.
Claims
1. A test tube rack for use in the preparation of slant culture media, characterized in that, The device includes an upper box and a lower box stacked on top of each other. The bottom of the upper box has several first test tube holes, and the top of the upper box has a perforated plate with several second test tube holes that are directly opposite to the first test tube holes. The upper box and the lower box are connected by a connecting structure and are slidably connected laterally. The upper box has a side opening on one side along its sliding direction, and the bottom edge of the side opening has several upper grooves for positioning the test tube body. The bottom of the lower box on the side opposite to the side opening has several lower grooves for supporting the bottom of the test tube.
2. The test tube rack for preparing slant culture media according to claim 1, characterized in that, The perforated plate is detachably connected to the upper box.
3. The test tube rack for preparing slant culture media according to claim 2, characterized in that, The top of the side opening of the upper box is provided with a placement boss, and the top side of the upper box is provided with a slot extending along the direction of the placement boss. One end of the perforated plate is placed on the placement boss, and the other end of the perforated plate is provided with a protrusion, which is inserted into the slot.
4. The test tube rack for preparing slant culture media according to claim 3, characterized in that, The bottom side of the upper box is provided with a wide groove, which communicates with the inner cavity of the upper box and allows the perforated plate to be inserted.
5. The test tube rack for preparing slant culture media according to claim 1, characterized in that, The upper box has a support column at one bottom side, the bottom end of the support column is flush with the bottom end of the lower box, and the lower box has a groove for accommodating the support column.
6. The test tube rack for preparing slant culture media according to claim 5, characterized in that, The bottom of the support column is provided with anti-slip rubber.
7. The test tube rack for preparing slant culture media according to claim 1, characterized in that, The connection structure includes: parallel upper guide rails on both sides of the bottom of the upper box, and parallel lower guide rails on both sides of the top of the lower box, wherein the upper guide rails and the lower guide rails are slidably connected.
8. The test tube rack for preparing slant culture media according to claim 1, characterized in that, The upper and / or lower groove is one of a circular groove, a square groove, or a triangular groove.