WO2018195756A1

WO2018195756A1 - Test tube stand and receiving plate unit with magnetic base used for super clean bench

Info

Publication number: WO2018195756A1
Application number: PCT/CN2017/081803
Authority: WO
Inventors: 刘展; 彭聿平; 陈钟; 邱一华; 陆健花
Original assignee: 南通大学
Priority date: 2017-04-25
Filing date: 2017-04-25
Publication date: 2018-11-01
Also published as: ZA201808188B

Abstract

Provided is a test tube stand and receiving plate unit with a magnetic base used for a super clean bench. The test tube stand and receiving plate unit comprises a magnetic seat (6) generating a magnetic attraction force. A side face of the magnetic seat (6) is a magnetic seat attraction face (4) for attracting the magnetic base onto a vertical side iron plate in the super clean bench, a bottom face (7) of the magnetic seat is in contact with a bottom face in the super clean bench, an upright column base plate (3) is fixedly mounted on an upper surface of the magnetic seat, and an upright column (1) is disposed on the upright column base plate (3). An upper and a lower positioning lock are mounted on the upright column (1), and a receiving plate horizontal member and a test tube stand horizontal member, being sleeved over the upright column (1) and being horizontally rotatable on the upright column (1), are respectively disposed above the upper and lower positioning locks. The test tube stand and receiving plate unit with a magnetic base can solve the problem of placing test tubes of different specifications and the above-mentioned small laboratory devices in a super clean bench by using one stand, on the premise of taking up hardly any of a bench surface space of the super clean bench, and thereby facilitating fast, efficient and accurate scientific research experiment operations in the super clean bench.

Description

Ultra-clean table with magnetic base test tube rack, storage tray

[0001] The present invention relates to a magnetic base test tube rack and a storage tray for a clean bench.

Background technique

[0002] In scientific research experiments in which the clean bench provides a sterile environment, test tubes, pipette tips, pipette tips, alcohol cotton balls, culture caps, lighters, and ophthalmology are experimental equipment that are usually required in experiments. Wherein, the test tube is used as an experimental container, and the steps of dispensing, extracting, washing, incubating, and replacing the sample are completed by adding some solution to the test tube or removing other solutions; the pipette tip and the pipette tip , alcohol cotton balls, culture bottle caps, lighters, ophthalmology 镊 are auxiliary laboratory equipment that needs to be used repeatedly in experiments.

[0003] As a test tube, the volume usually has various specifications. In scientific research experiments, these test tubes containing experimental samples often need to be placed vertically in a clean bench to prevent contamination of the experimental sample and spillage of the experimental system. For vertical placement of test tubes of different sizes in a clean bench, it is common to place test tubes on the surface of the clean bench to place the test tubes vertically.

[0004] In the need to use dropper tips, pipette tips, alcohol cotton balls, culture caps, lighters, ophthalmology and other experimental small equipment, people usually put these experimental small equipment in the relevant container, or will These experimental small equipment were scattered on the countertop of the clean bench.

[0005] However, a test tube rack, a container for accommodating the above experimental small equipment, or a small experimental device scattered on the surface of the ultra-clean platform are placed on the table surface of the ultra-clean platform, which will occupy a large clean bench. The countertop space has caused crowding of experimental samples, experimental reagents, and laboratory equipment on the surface of a clean bench that is not originally large. The crowding of experimental samples, experimental reagents and laboratory equipment on the surface of ultra-clean benches can hinder the rapid and efficient implementation of scientific research experiments and affect the accuracy and accuracy of scientific research experiments. Serious paralysis can lead to the failure of scientific research experiments.

technical problem

[0006] An object of the present invention is to provide a magnetic test tube rack and a storage tray which are reasonable in structure and are particularly suitable for use in a clean bench for a clean bench. Problem solution

Technical solution

[0007] A magnetic base test tube rack and a storage tray for a clean platform, comprising: a magnetic seat for generating an adsorption magnetic force, wherein a side of the magnetic seat is a vertical side plate for adsorbing the magnetic base on the iron in the ultra-clean platform; The magnetic seat adsorption surface, the bottom surface of the magnetic seat is in contact with the bottom surface of the ultra-clean platform, the upper surface of the magnetic seat is fixed with the column bottom plate, the column is provided on the column bottom plate; the upper and lower positioning locks are mounted on the column, and the upper and lower positioning are Above the lock, a horizontal member of the storage tray which is set on the column and horizontally rotatable on the column, and a horizontal member of the test tube rack are respectively arranged

[0008] The storage tray horizontal member includes a storage tray connecting sleeve for arranging the storage tray horizontal member on the column of the magnetic base, and helps the storage tray horizontal member to achieve a large angular movement in the horizontal direction. The storage tray connecting sleeve is connected to the storage tray through a horizontal arm, and the storage tray is provided with a frame which is lcm higher than the surface of the storage object placing plate for preventing the falling of the storage object; the storage tray is used for storing according to experimental needs. Small laboratory equipment for loading or unloading in a storage tray;

[0009] The test tube rack horizontal member includes a test tube rack connection sleeve, and the test tube rack connection sleeve is used to sleeve the test tube rack horizontal member on the column of the magnetic base, and assists the test tube rack horizontal member to realize a large angle movement in the horizontal direction. The test tube rack connection sleeve is connected to the test tube rack plate through the horizontal arm of the test tube rack, and the test tube rack plate is provided with the test tube lower hanging holes of different diameters, and the plastic micro-test tubes with different specifications can be vertically placed downward;

[0010] The storage tray horizontal member and the test tube rack horizontal member are thermoplastic elastomer materials, and are composed of the following components:

[0011] 120 parts of polyethylene terephthalate having a relative density of 1.38 g/cm 3

[0012] US Dow 8401 Polyolefin Elastomer 200 parts

[0013] polypropylene 50 parts

[0014] Toughener is 25 parts of LLDPE

[0015] Zinc stearate 6 parts

[0016] Silicone masterbatch 8 parts

[0017] Antioxidant 1010 2 parts.

[0018] The experimental small equipment is a pipette tip, a pipette tip, a culture bottle cap, an alcohol cotton ball, a lighter, an ophthalmology. [0019] How to use:

[0020] Pre-treatment: Wiping and sterilizing the magnetic base test tube rack and the components of the storage tray with the disinfectant to ensure that the magnetic base test tube rack and the storage tray installed in the ultra-clean platform do not change the non-cleanness in the clean bench. Bacterial environment; If it is used frequently, it can be placed in the ultra-clean bench for a long time, which can be wiped out by disinfection with disinfectant;

[0021] mounting a magnetic base;

[0022] Installation of the horizontal component of the test tube rack: Select the required height, install the horizontal positioning lock of the horizontal height of the test tube rack; the specific steps are as follows: Loosely fix the locking screw, and insert the cylindrical hole in the middle of the positioning lock into the column, select The required height, tighten the positioning lock fastening screw, so that the silicone pad of the positioning lock is tightly engaged with the column; after the height positioning lock is installed, take the horizontal component of the test tube rack, and insert the test tube bracket into the column, and connect the sleeve. The lower edge of the lower edge is located at the upper edge of the height positioning lock, and the installation and height positioning of the horizontal member of the test tube rack are completed;

[0023] Installation of the storage tray horizontal member: selecting the required height, installing the storage tray horizontal member height positioning lock, the installation method is the same as the method of installing the test tube horizontal member height positioning lock; after the height positioning lock is installed, taking the storage The horizontal member of the disc is sleeved into the column, and the lower edge of the connecting sleeve is located at the upper edge of the height positioning lock to complete the height positioning; the installation and height positioning of the horizontal member of the storage tray is completed.

[0024] The order of installation of the above two horizontal members can be arbitrarily selected according to experimental needs; the diameter of the inner ring of the connecting sleeve is slightly larger than the outer diameter of the column, so that the connecting sleeve can be freely rotated on the column, and cannot Let it produce obvious swing on the column; At this point, the installation of the magnetic base test tube rack and the storage tray in the ultra-clean platform has been completed; for the sake of safety, the UV lamp can be sterilized twice, after the secondary sterilization is completed, UV lamp

[0025] Placement of plastic micro-tubes with lids: According to the needs of the experiment, rotate and adjust the horizontal position of the tube rack plates; according to the specifications of the test tubes, select the vertical placement of the test tubes under different test tubes or take out the test tubes, due to the tube end of the test tubes The diameter is larger than the diameter of the tube body, so the tube with a small diameter can be inserted vertically into the hanging hole of the tube, while the tube end with a large diameter is stuck above the tube hole, ensuring the vertical position of the tube on the tube rack. Place

[0026] Placement of the storage object: according to the needs of the experiment, horizontally adjust the horizontal space position of the storage tray, wherein the storage object placement plate frame surrounds the circular storage object placement plate and is higher than the plate surface of the storage object placement plate by 1 cm, To prevent the falling off of the storage item; insert or take out the experimental small device on the storage placing plate according to the experimental needs Material.

[0027] Disassembly: It is necessary to take out the magnetic base test tube rack and the storage tray from the clean platform, in the order from top to bottom, first vertically remove the column from the column and remove the horizontal member of the storage tray, the loose positioning lock fastening screw Move vertically upwards, remove the storage tray height positioning lock from the column; remove the tube rack horizontal member and remove the storage tray horizontal member in the same way, the method of removing the tube rack height positioning lock is the same as the method of removing the storage tray height positioning lock; Rotate the constant magnet to the off position and remove the magnetic base.

Advantageous effects of the invention

Beneficial effect

[0028] The present invention can solve the placement of different specifications of test tubes and the above experimental small equipment in a clean bench by using a bracket without occupying the ultra-clean bench space (especially without occupying the mesa space in the center of the clean bench). problem. The vertical space position of the test tube rack and the storage panel can be changed by adjusting the position of the horizontal member height positioning lock on the column. The horizontal spatial position of the test tube rack and the storage panel can also be changed by adjusting the angle of the test tube rack horizontal member and the storage tray horizontal member. It is conducive to the rapid, efficient and accurate operation of scientific research experiments in the ultra-clean platform.

[0029] The storage tray and the test tube rack plate made of a specific formula have long service life and are not easy to be sterilized, and are particularly suitable for use in a clean bench.

Brief description of the drawing

DRAWINGS

[0030] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0031] The figure is a front view of the magnetic base

2 is a longitudinal sectional view of a magnetic seat

[0033] FIG. 3 is a top view of the horizontal member height positioning lock

[0034] FIG. 4 is a plan view of the horizontal frame of the test tube rack

[0035] FIG. 5 is a plan view of the horizontal member of the storage tray

[0036] Name and function of each component

[0037] 1. Column: Vertically placed in the center of the upper surface of the magnetic seat, connecting the horizontal member of the test tube rack and the horizontal member of the storage tray.

[0038] 2. Chassis fixing screw: Fix the column chassis to the upper surface of the magnetic base. [0039] 3. Column chassis: connected to the bottom end of the column, forming a fixed surface of the bottom end of the column and the upper surface of the magnetic seat.

[0040] 4. Magnetic seat adsorption surface: The magnetic base is adsorbed on the vertical side plate of the iron in the clean bench.

[0041] 5. Constant magnet rotation is turned off: The constant magnet is rotated to the off position, the magnetic force of the adsorption surface of the magnetic base disappears, and the magnetic base can be freely moved; the constant magnet is rotated to the position of the crucible, and the magnetic base adsorption surface generates a magnetic force. The magnetic base is firmly attached to the vertical side panel of the iron in the clean bench.

[0042] 6. Magnetic seat: The adsorption magnetic force is generated.

[0043] 7. Magnetic seat bottom surface: contact with the bottom surface of the clean bench to increase the stability of the magnetic base.

[0044] 8. Constant Magnet: A magnetic generating source.

[0045] 9. Non-magnetic material: The soft magnetic material of the magnetic seat is divided into uniform upper and lower halves.

[0046] 10. Soft magnetic material: According to the position of the constant magnet, the magnetic seat respectively generates magnetization, or demagnetization effect.

[0047] 11. Positioning lock silicone pad: Cooperating with the magnetic base column to form a large static friction force, so that the positioning lock is well fixed at the height position required by the magnetic base column.

[0048] 12. Positioning lock fastening screw: Tightening the screw allows the positioning lock to be tightly held on the column of the magnetic base

Loosen the screw, remove the positioning lock to the magnetic base column, and move the positioning lock up and down.

[0049] 13. Positioning lock body: forming a positioning cylindrical lock and a magnetic base column.

[0050] 14. Positioning lock hinge: enables the cohesive cylindrical space of the positioning lock to be effectively engaged.

[0051] 15. Test tube rack horizontal arm: connecting sleeve and tube rack plate.

[0052] 16. Under-tube hanging holes: There are different hanging holes of different diameters, and different sizes of plastic micro-tubes with caps can be placed vertically downwards.

[0053] 17. Test tube rack: The formed portion of the hanging hole under the test tube is provided.

[0054] 18. Test tube rack connection sleeve: The test tube rack horizontal member is placed on the column of the magnetic base and assists the tube rack horizontal member to achieve a large angular movement in the horizontal direction.

[0055] 19. Storage tray horizontal arm: connecting sleeve and storage tray.

[0056] 20. Storage object placement board frame: Prevents falling off of the storage item.

[0057] 21. Storage object placement plate: A portion where the storage object is placed.

[0058] 22. Storage tray connection sleeve: The storage tray horizontal member is fixed to the column of the magnetic base, and helps the storage tray horizontal member to achieve a large angular movement in the horizontal direction. BEST MODE FOR CARRYING OUT THE INVENTION

BEST MODE FOR CARRYING OUT THE INVENTION

[0059] A magnetic base test tube rack and a storage tray for a clean platform include a magnetic seat for generating an adsorption magnetic force, and a side of the magnetic seat is a magnetic seat for adsorbing the magnetic base on a vertical side plate of the iron in the ultra-clean platform. The bottom surface of the magnetic seat is in contact with the bottom surface of the ultra-clean platform, the upper surface of the magnetic base is fixed with the column bottom plate, and the column is provided on the column bottom plate; the upper and lower positioning locks are mounted on the column, and the upper and lower positioning locks are respectively arranged above a storage tray horizontal member and a test tube rack horizontal member which are arranged on the column and horizontally rotatable on the column;

[0060] the storage tray horizontal member includes a storage tray connection sleeve for arranging the storage tray horizontal member on the column of the magnetic base, and assisting the storage tray horizontal member to achieve a large angular movement in the horizontal direction The storage tray connecting sleeve is connected to the storage tray through a horizontal arm, and the storage tray is provided with a frame which is lcm higher than the surface of the storage object placing plate for preventing the falling of the storage object; the storage tray is used for storing according to experimental needs. Small laboratory equipment for loading or unloading in a storage tray;

[0061] The test tube rack horizontal member includes a test tube rack connection sleeve, and the test tube rack connection sleeve is used for arranging the test tube rack horizontal member on the column of the magnetic base, and assisting the test tube rack horizontal member to achieve a large angle movement in the horizontal direction. The test tube rack connection sleeve is connected to the test tube rack plate through the horizontal arm of the test tube rack, and the test tube rack plate is provided with the test tube lower hanging holes of different diameters, and the plastic micro-test tubes with different specifications can be vertically placed downward;

[0062] The storage tray horizontal member and the test tube rack horizontal member are thermoplastic elastomer materials, and are composed of the following components:

[0063] 120 parts of polyethylene terephthalate having a relative density of 1.38 g/cm 3

[0064] US Dow 8401 Polyolefin Elastomer 200 parts

[0065] polypropylene 50 parts

[0066] Toughener is 25 parts of LLDPE

[0067] Zinc stearate 6 parts

[0068] Silicone masterbatch 8 parts

[0069] Antioxidant 1010 parts.

[0070] The storage tray horizontal member, the test tube rack horizontal member are made of 吋, the above materials are

(—) Mixing

[0072] Weigh each component in the mixer by mass parts, and stir together at high speed until the mixture is uniform; (2) Extrusion granulation

[0074] mixing the homogeneous material in step (1), melt-extruding through a single-screw or twin-screw extruder, and granulating [0075] (3) molding

[0076] The particles obtained in the step (2) are molded into a mold to obtain a horizontal member for a storage tray and a horizontal member for a test tube rack.

[0077] The experimental small equipment is a pipette tip, a pipette tip, a culture bottle cap, an alcohol cotton ball, a lighter, an ophthalmic file, and the like.

[0078] How to use:

[0079] Pretreatment: Wiping and sterilizing the magnetic base test tube rack and the components of the storage tray with the disinfectant to ensure that the magnetic base test tube rack and the storage tray installed in the ultra clean bench do not change the non-cleanness in the clean bench. Bacterial environment; If it is used frequently, it can be placed in the ultra-clean bench for a long time, which can be wiped out by disinfection with disinfectant;

[0080] mounting the magnetic base: rotating the constant magnet to the closed position; thereafter, the N and S poles of the constant magnet are in a horizontal position, and the magnetic lines of force are formed in two soft magnetic materials separated by the non-magnetic material Closed circuit, the magnetic seat adsorption surface is not magnetic, can move freely; place the magnetic base at the desired position, the specific operation is: contact the magnetic seat adsorption surface with the vertical side plate of the iron in the ultra-clean platform, the magnetic seat bottom and the ultra-clean table The bottom surface of the inner surface is rotated; the constant magnet is rotated and turned to the position of the crucible. The N and S poles of the constant magnet are in the upper and lower positions, and the N and S poles of the constant magnet are respectively aligned with the two blocks separated by the non-magnetic material. Soft magnetic material, from the N pole to the soft magnetic material to the iron vertical side plate in the ultra clean table to another soft magnetic material to the S pole, forming magnetic field lines closed, the magnetic seat adsorption surface can be firmly adsorbed on the ultra clean table Inside the iron vertical side panel;

[0081] Installation of the horizontal component of the test tube rack: Select the required height, and install the height adjustment lock of the horizontal height of the test tube rack; the specific steps are as follows: Loosely fix the locking screw, and insert the cylindrical hole in the middle of the positioning lock into the column, select The required height, tighten the positioning lock fastening screw, so that the silicone pad of the positioning lock is tightly engaged with the column; after the height positioning lock is installed, take the horizontal component of the test tube rack, and insert the test tube bracket into the column, and connect the sleeve. The lower edge of the lower edge is located at the upper edge of the height positioning lock, and the installation and height positioning of the horizontal member of the test tube rack are completed;

[0082] Installation of the horizontal member of the storage tray: selecting the required height, installing the horizontal member height positioning lock of the storage tray, the installation method is the same as the method of installing the height adjustment lock of the horizontal member of the test tube rack; after the height positioning lock is installed, taking the storage a horizontal member of the disc, the connecting sleeve of the member is sleeved into the column, and the lower edge of the connecting sleeve is Height positioning is performed on the upper edge of the height positioning lock; installation and height positioning of the horizontal member of the storage tray is completed

[0083] The order of installation of the above two horizontal members can be arbitrarily selected according to experimental needs; the diameter of the inner ring of the connecting sleeve is slightly larger than the outer diameter of the column, so that the connecting sleeve can be freely rotated on the column, and cannot Let it produce obvious swing on the column; At this point, the installation of the magnetic base test tube rack and the storage tray in the ultra-clean platform has been completed; for the sake of safety, the UV lamp can be sterilized twice, after the secondary sterilization is completed, UV lamp

[0084] Placement of plastic micro-tube with cover: According to the needs of the experiment, rotate and adjust the horizontal position of the test tube rack; according to the specifications of the test tube, select the vertical placement of the test tube under the test tube or take out the test tube, because the tube end of the test tube The diameter is larger than the diameter of the tube body, so the tube with a small diameter can be inserted vertically into the hanging hole of the tube, while the tube end with a large diameter is stuck above the tube hole, ensuring the vertical position of the tube on the tube rack. Place

[0085] Placement of the storage object: According to the needs of the experiment, the horizontal space position of the storage tray is adjusted horizontally, wherein the storage object placement plate frame surrounds the circular storage object placement plate and is higher than the plate surface of the storage object placement plate by 1 cm. To prevent the falling off of the storage item; put or take out the experimental small equipment on the storage placing board according to the experiment.

[0086] Disassembly: It is necessary to take out the magnetic base test tube rack and the storage tray from the clean platform. In the order from top to bottom, first remove the vertical horizontally upwardly from the column and remove the horizontal member of the storage tray, and loosen the positioning lock fastening screw. Move vertically upwards, remove the storage tray height positioning lock from the column; remove the tube rack horizontal member and remove the storage tray horizontal member in the same way, the method of removing the tube rack height positioning lock is the same as the method of removing the storage tray height positioning lock; Rotate the constant magnet to the off position and remove the magnetic base.

Claims

Claim

[Claim 1] A magnetic base test tube rack and a storage tray for a clean bench, comprising: a magnetic seat for generating an adsorption magnetic force, wherein a side of the magnetic seat is a vertical side of the iron base adsorbed to the ultra-clean platform The magnetic seat adsorption surface on the board, the bottom surface of the magnetic seat is in contact with the bottom surface of the ultra-clean table, the upper surface of the magnetic seat is fixed with the column bottom plate, and the column is provided on the column bottom plate; the upper and lower positioning locks are mounted on the column, upper and lower two Above the positioning locks, respectively, a storage tray horizontal member and a test tube rack horizontal member which are set on the column and horizontally rotatable on the column; the storage tray horizontal member includes a storage tray connection sleeve, and the storage tray connection sleeve is used for housing The horizontal member of the disk is sleeved on the column of the magnetic base, and helps the horizontal member of the storage tray to realize a large-angle movement in the horizontal direction. The storage tray connecting sleeve is connected to the storage tray through the horizontal arm, and the storage tray is disposed above the storage object. a frame of lcm on the surface of the board for preventing the falling off of the storage item; the storage tray is used for storing and taking out in the storage tray according to experimental needs Small equipment for experimentation;

The test tube rack horizontal member comprises a test tube rack connection sleeve, and the test tube rack connection sleeve is used for arranging the test tube rack horizontal member on the column of the magnetic base, and assisting the test tube rack horizontal member to realize large-angle movement in the horizontal direction, the test tube rack The connecting sleeve is connected to the test tube rack plate through the horizontal arm of the test tube rack, and the test tube rack plate is provided with the hanging holes of the test tube of different diameters, and the plastic micro-test tubes with different specifications can be vertically placed downward;

The storage tray horizontal member and the test tube rack horizontal member are thermoplastic elastomer materials and are composed of the following parts by weight:

120 parts of polyethylene terephthalate having a relative density of 1.38 g/cm 3

American Dow 8401 Polyolefin Elastomer 200 parts

Polypropylene 50 parts

Toughener is 25 parts of LLDPE

Zinc stearate 6 parts

Silicone masterbatch 8 parts

Antioxidant 1010 2 parts.

[Claim 2] The magnetic base test tube rack and the storage tray for a clean bench according to claim 1, wherein : The experimental small equipment is a pipette tip, a pipette tip, a culture bottle cap, an alcohol cotton ball, a lighter, an ophthalmologist.

[Claim 3] The magnetic base test tube rack and the storage tray for a clean bench according to claim 1 or 2, wherein:

Pre-treatment: Wipe and sterilize the parts of the magnetic base test tube rack and the storage tray with disinfectant to ensure that the magnetic base test tube rack and storage tray installed in the clean bench will not change the aseptic environment in the clean bench; If it is used frequently, it can be placed in the ultra-clean platform for a long time, which can be wiped out by disinfection with disinfectant;

Installing a magnetic base;

Installation of the horizontal component of the test tube rack: Select the required height, install the height adjustment lock of the horizontal height of the test tube rack; the specific steps are as follows: Loosen the positioning lock fastening screw, put the cylindrical hole in the middle of the positioning lock into the column, select the desired Height, tighten the positioning lock fastening screw, so that the silicone pad of the positioning lock is tightly engaged with the column; after the height positioning lock is installed, take the horizontal component of the test tube rack, put the test tube bracket into the column, and connect the lower edge of the sleeve Located at the upper edge of the height positioning lock, completing the installation and height positioning of the horizontal components of the test tube rack;

Installation of the horizontal member of the storage tray: Select the required height, install the storage box horizontal member height positioning lock, the installation method is the same as the method of installing the horizontal height lock of the horizontal position of the test tube rack; after the height positioning lock is installed, take the horizontal member of the storage tray The connecting sleeve of the component is sleeved into the column, and the lower edge of the connecting sleeve is located at the upper edge of the height positioning lock to complete the height positioning; the installation and height positioning of the horizontal member of the storage tray are completed;

The order of installation of the above two horizontal members can be arbitrarily selected according to the needs of the experiment; the diameter of the inner ring of the connecting sleeve is slightly larger than the outer diameter of the column, so that the connecting sleeve can be freely rotated on the column without being allowed to The shaft has obvious swing; at this point, the installation of the magnetic base test tube rack and the storage tray in the ultra-clean platform has been completed; for the sake of safety, the ultraviolet lamp can be double-sterilized, and after the secondary sterilization is completed, the ultraviolet lamp is turned off;

Placement of plastic micro-tubes with cover: According to the experiment, rotate and adjust the horizontal position of the tube rack plate; according to the specifications of the test tube, select the vertical placement of the tube under the test tube of different specifications or take out the test tube, because the diameter of the tube end of the test tube is larger than The diameter of the tube body, so the diameter The small tube body can be inserted vertically into the hanging hole of the test tube, and the large diameter tube end is stuck above the hanging hole of the test tube to ensure the vertical placement of the test tube on the test tube rack;

Placement of the storage item: According to the needs of the experiment, the horizontal space position of the storage tray is adjusted horizontally, wherein the storage object placement board frame surrounds the circular storage object placement board and is higher than the board surface of the storage object placement board, and is used for preventing storage. The falling off of the object; according to the experiment needs to put or take out the experimental small equipment on the storage placing board.

Disassembly: It is necessary to take out the magnetic base test tube rack and the storage tray from the clean platform. In the order from top to bottom, first move vertically upwards from the column and remove the horizontal member of the storage tray, loosely fix the locking screw, vertically upward Move, remove the storage tray height positioning lock from the column; remove the tube rack horizontal member and remove the storage tray horizontal member. The method of removing the tube rack height positioning lock is the same as the method of removing the storage tray height positioning lock; Rotate the switch to the off position and remove the magnetic base.