CN211718233U - Test device for simulating formaldehyde - Google Patents
Test device for simulating formaldehyde Download PDFInfo
- Publication number
- CN211718233U CN211718233U CN201922451763.9U CN201922451763U CN211718233U CN 211718233 U CN211718233 U CN 211718233U CN 201922451763 U CN201922451763 U CN 201922451763U CN 211718233 U CN211718233 U CN 211718233U
- Authority
- CN
- China
- Prior art keywords
- formaldehyde
- box
- test
- proof box
- fixedly connected
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- WSFSSNUMVMOOMR-UHFFFAOYSA-N Formaldehyde Chemical compound O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 title claims abstract description 189
- 238000012360 testing method Methods 0.000 title claims abstract description 82
- 241001465754 Metazoa Species 0.000 claims abstract description 26
- 238000002474 experimental method Methods 0.000 claims abstract description 23
- 230000007246 mechanism Effects 0.000 claims abstract description 17
- 238000004088 simulation Methods 0.000 claims abstract description 14
- WSFSSNUMVMOOMR-NJFSPNSNSA-N methanone Chemical compound O=[14CH2] WSFSSNUMVMOOMR-NJFSPNSNSA-N 0.000 claims abstract description 6
- 230000001105 regulatory effect Effects 0.000 claims description 6
- 239000011521 glass Substances 0.000 claims description 5
- 230000002457 bidirectional effect Effects 0.000 claims 1
- 238000000034 method Methods 0.000 abstract description 7
- 238000011897 real-time detection Methods 0.000 abstract description 2
- 230000006978 adaptation Effects 0.000 abstract 1
- -1 base Chemical compound 0.000 abstract 1
- 235000019256 formaldehyde Nutrition 0.000 description 50
- 229960004279 formaldehyde Drugs 0.000 description 49
- 238000007789 sealing Methods 0.000 description 7
- 239000007789 gas Substances 0.000 description 5
- 241000699666 Mus <mouse, genus> Species 0.000 description 3
- 230000009471 action Effects 0.000 description 3
- 239000007864 aqueous solution Substances 0.000 description 3
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 2
- 241000883990 Flabellum Species 0.000 description 2
- 241000699670 Mus sp. Species 0.000 description 2
- 238000010171 animal model Methods 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000000622 irritating effect Effects 0.000 description 2
- 210000001331 nose Anatomy 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 206010008479 Chest Pain Diseases 0.000 description 1
- 201000004624 Dermatitis Diseases 0.000 description 1
- 206010013952 Dysphonia Diseases 0.000 description 1
- 206010052140 Eye pruritus Diseases 0.000 description 1
- 208000010473 Hoarseness Diseases 0.000 description 1
- 206010028980 Neoplasm Diseases 0.000 description 1
- 208000002193 Pain Diseases 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 208000006673 asthma Diseases 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 201000011510 cancer Diseases 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000013100 final test Methods 0.000 description 1
- 231100000003 human carcinogen Toxicity 0.000 description 1
- 238000001727 in vivo Methods 0.000 description 1
- 239000002085 irritant Substances 0.000 description 1
- 231100000021 irritant Toxicity 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 210000004877 mucosa Anatomy 0.000 description 1
- 150000002894 organic compounds Chemical class 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 206010041232 sneezing Diseases 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 208000024891 symptom Diseases 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Images
Landscapes
- Housing For Livestock And Birds (AREA)
Abstract
The utility model discloses a test device of simulation formaldehyde, including base, proof box and live body experiment mechanism, proof box fixed mounting is in the top of base, and the live body experiment mechanism is placed in the top of proof box, and the live body experiment mechanism includes apron and animal box with a net, and animal box with a net fixed mounting is in the bottom of apron, and the logical groove with animal box with a net looks adaptation is seted up at the top of proof box, the utility model relates to a formaldehyde harm test technical field. This test device of simulation formaldehyde when testing, can the gaseous concentration in real-time detection proof box, improved experimental quality to can carry out fine the accuse to the concentration of formaldehyde in the proof box through the control valve, make the experiment can go on according to predetermined procedure, can carry out the animal live body test, carry out fine fixing to live body experiment mechanism in the laboratory, guaranteed the leakproofness of device when experimental, after the experiment finishes, can very convenient take off live body experiment mechanism.
Description
Technical Field
The utility model relates to a formaldehyde harm test technical field specifically is a test device of simulation formaldehyde.
Background
Formaldehyde, chemical formula HCHO or CH2O, formula weight 30.03, also known as formaldehyde, is a colorless gas, has a special pungent odor, has a pungent effect on the eyes, nose, etc., has a gas relative density of 1.067 (air ═ 1), and has a liquid density of 0.815g/cm3(-20 ℃). Melting point is-92 ℃, boiling point is-19.5 ℃, the aqueous solution is easily soluble in water and ethanol, the concentration of the aqueous solution can reach 55 percent, usually 40 percent, also known as formol, naturally existing organic compounds and colorless irritant gases, the aqueous solution has an irritant effect on eyes, noses and the like of people and is listed as a known human carcinogen, the main harm of formaldehyde is represented as the irritant effect on skin mucosa, when the formaldehyde reaches a certain concentration indoors, people feel uncomfortable, the formaldehyde concentration of more than 0.08m3 can cause red eyes, itchy eyes, throat discomfort or pain, hoarseness, sneezing, chest distress, asthma, dermatitis and the like, the formaldehyde can cause cancer when serious, the formaldehyde harm to human bodies is a subject of continuous research, at present, a person of first concern generally puts a white mouse into formaldehyde environments with different concentrations when researching, so as to obtain specific reaction symptoms of the formaldehyde environments with different concentrations, the current formaldehyde test has the following defects:
when testing, can't carry out fine the accuse to the concentration of formaldehyde, because the air in the proof box is not mobile, when dashing into formaldehyde gas, can't guarantee that formaldehyde can be even distribution in the proof box to also can not guarantee that the mice is in the balanced space of a formaldehyde concentration, lead to final test data inaccurate, when carrying out the live body test, get to the mice and put the trouble, and observe inconveniently simultaneously.
SUMMERY OF THE UTILITY MODEL
Not enough to prior art, the utility model provides a test device of simulation formaldehyde has solved current formaldehyde experiment and can't carry out accurate accuse to formaldehyde concentration, does not have the problem of carrying out fine arrangement to the animal when doing the live body experiment.
In order to achieve the above purpose, the utility model discloses a following technical scheme realizes: a test device for simulating formaldehyde comprises a base, a test box and a living body experiment mechanism, wherein the test box is fixedly arranged at the top of the base, the living body experiment mechanism is placed at the top of the test box and comprises a cover plate and an animal net cage, the animal net cage is fixedly arranged at the bottom of the cover plate, the top of the test box is provided with a through groove matched with the animal net cage, the top of an inner cavity of the test box and two sides of the animal net cage are fixedly connected with a chute plate, the inside of the chute plate is slidably connected with a sliding plate, one side of the bottom of the sliding plate is fixedly connected with a first electric telescopic rod, the bottom of the first electric telescopic rod is fixedly connected with a limiting block, two sides of the animal net cage are fixedly connected with a positioning plate, the top of the positioning plate is provided with a limiting hole matched with the limiting block for use, and one side of the bottom of the, and one end of the second electric telescopic rod is fixedly connected with one side of the sliding plate.
Preferably, the top of base and the one side fixedly connected with formaldehyde storage jar that is located the proof box, the top intercommunication of formaldehyde storage jar has the air duct, and the top intercommunication intake pipe of formaldehyde storage jar, the one end of air duct runs through the proof box and extends to the inside of proof box, the fixed surface of air duct is connected with the one-way control valve.
Preferably, a formaldehyde concentration detector is fixedly installed on one side of the inner cavity of the test box, and a data display screen is fixedly installed on the surface of the test box.
Preferably, the bottom of the inner cavity of the test box is fixedly connected with a driving motor through a connecting plate, fan blades are fixedly mounted on an output shaft of the driving motor, and a mesh enclosure matched with the fan blades for use is fixedly mounted at the bottom of the inner cavity of the test box.
Preferably, a glass observation window is arranged on the upper portion of the surface of the test box, and a control key is fixedly installed on one side, located on the data display screen, of the surface of the test box through a connecting plate.
Preferably, the bottom of the cover plate is fixedly provided with a sealing gasket, the bottom of the sealing gasket is in contact with the top of the test box, and handles are fixedly arranged on two sides of the top of the cover plate.
Preferably, the four corners of the top of the test box are communicated with air outlet pipes, and the surfaces of the air outlet pipes are fixedly provided with two-way regulating valves.
Advantageous effects
The utility model provides a test device of simulation formaldehyde. Compared with the prior art, the method has the following beneficial effects:
(1) this simulation formaldehyde's test device, one side fixedly connected with formaldehyde storage jar through the top of base and be located the proof box, the top intercommunication of formaldehyde storage jar has the air duct, and the top intercommunication intake pipe of formaldehyde storage jar, the one end of air duct runs through the proof box and extends to the inside of proof box, the fixed surface of air duct is connected with the one-way control valve, one side fixed mounting of proof box inner chamber has formaldehyde concentration detector, the fixed surface of proof box installs the data display screen, when testing, can the gaseous concentration in the real-time detection proof box, the quality of experiment has been improved, and can carry out fine the accuse to the concentration of formaldehyde in the proof box through the control valve, thereby can reachd the specific harm that different concentration values lead to, make the experiment can go on according to predetermined procedure.
(2) The test device for simulating the formaldehyde comprises a test box, wherein the top of the test box is provided with a through groove matched with an animal net cage, the top of an inner cavity of the test box is fixedly connected with a chute plate at two sides of the animal net cage, the inside of the chute plate is slidably connected with a sliding plate, one side of the bottom of the sliding plate is fixedly connected with a first electric telescopic rod, the bottom end of the first electric telescopic rod is fixedly connected with a limiting block, two sides of the animal net cage are fixedly connected with a positioning plate, the top of the positioning plate is provided with a limiting hole matched with the limiting block for use, one side of the bottom of the chute plate is fixedly provided with a second electric telescopic rod through a connecting block, one end of the second electric telescopic rod is fixedly connected with one side of the sliding plate, the upper part of the surface of the test box is provided with a, the device has the advantages that the tightness of the device is guaranteed during testing, and the in-vivo experiment mechanism can be taken down very conveniently after the testing is finished.
(3) This test device of simulation formaldehyde, bottom through the proof box inner chamber is through connecting plate fixedly connected with driving motor to driving motor's output shaft fixed mounting has the flabellum, the bottom fixed mounting of proof box inner chamber has the screen panel that cooperatees and use with the flabellum, when experimental, can make the air in the proof box carry out fine flow, thereby make the distribution that formaldehyde can be even in the proof box, guaranteed formaldehyde concentration detection and experimental accurate nature.
Drawings
FIG. 1 is a schematic structural view of the present invention;
fig. 2 is a sectional view of the structure of the test chamber of the present invention;
FIG. 3 is an enlarged view of a portion of the substrate of FIG. 2;
fig. 4 is a schematic view of the sealing gasket structure of the present invention.
In the figure: 1. a base; 2. a test chamber; 3. a living body experiment mechanism; 4. a through groove; 5. a chute plate; 6. a slide plate; 7. a first electric telescopic rod; 8. a limiting block; 9. a second electric telescopic rod; 10. a formaldehyde storage tank; 11. an air duct; 12. a one-way control valve; 13. a formaldehyde concentration detector; 14. a data display screen; 15. a drive motor; 16. a fan blade; 17. a glass viewing window; 18. a control key; 19. a mesh enclosure; 20. an air outlet pipe; 21. a two-way regulating valve; 301. a cover plate; 302. animal cages; 303. positioning a plate; 304. a limiting hole; 305. a gasket; 306. a handle.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Referring to fig. 1-4, the present invention provides a technical solution: a test device for simulating formaldehyde comprises a base 1, a test box 2 and a living body experiment mechanism 3, wherein the test box 2 is fixedly arranged at the top of the base 1, the living body experiment mechanism 3 is arranged at the top of the test box 2, the living body experiment mechanism 3 comprises a cover plate 301 and an animal net box 302, the back surface of the animal net box 302 is connected with a box door through hinges, the animal net box 302 is fixedly arranged at the bottom of the cover plate 301, the top of the test box 2 is provided with a through groove 4 matched with the animal net box 302, the top of the inner cavity of the test box 2 and two sides of the animal net box 302 are both fixedly connected with a chute plate 5, the inside of the chute plate 5 is slidably connected with a sliding plate 6, one side of the bottom of the sliding plate 6 is fixedly connected with a first electric telescopic rod 7, the bottom end of the first electric telescopic rod 7 is fixedly connected with a limit block 8, two sides of the animal net box 302 are, one side of the bottom of the chute plate 5 is fixedly provided with a second electric telescopic rod 9 through a connecting block, one end of the second electric telescopic rod 9 is fixedly connected with one side of the chute plate 6, the top of the base 1 and one side of the test box 2 are fixedly connected with a formaldehyde storage tank 10, the pressure in the formaldehyde storage tank 10 is far greater than the pressure in the test box 2, the top of the formaldehyde storage tank 10 is communicated with an air guide pipe 11, the top of the formaldehyde storage tank 10 is communicated with an air inlet pipe, one end of the air guide pipe 11 penetrates through the test box 2 and extends into the test box 2, the surface of the air guide pipe 11 is fixedly connected with a one-way control valve 12, one side of the inner cavity of the test box 2 is fixedly provided with a formaldehyde concentration detector 13, the model of the formaldehyde concentration detector 13 is M366396, the surface of the test box 2 is fixedly provided with a data display screen 14, after the formaldehyde concentration detector 13 detects concentration data, the concentration, the bottom of the inner cavity of the test box 2 is fixedly connected with a driving motor 15 through a connecting plate, the driving motor 15 is a speed reducing motor, and the output shaft of the driving motor 15 is fixedly provided with a fan blade 16, the bottom of the inner cavity of the test box 2 is fixedly provided with a mesh enclosure 19 matched with the fan blade for use, the upper part of the surface of the test box 2 is provided with a glass observation window 17, one side of the surface of the test box 2 and positioned on the data display screen 14 is fixedly provided with a control key 18 through a connecting plate, the bottom of the cover plate 301 is fixedly provided with a sealing gasket 305, the sealing gasket 305 is made of rubber and has good sealing property, the bottom of the sealing pad 305 contacts with the top of the test chamber 2, the handles 306 are fixedly arranged on the two sides of the top of the cover plate 301, the four corners of the top of the test chamber 2 are communicated with the air outlet pipes 20, and a two-way regulating valve 21 is fixedly installed on the surface of the outlet pipe 20, and the one-way control valve 12 and the two-way regulating valve 21 are both electrically controlled valves.
And those not described in detail in this specification are well within the skill of those in the art.
When the device is used, an operator can put an experimental animal (a mouse) into the animal net box 302, after the experimental animal is put into the test box 2, the living body experiment mechanism 3 is put into the test box 2 through the through groove 4, at the moment, the operator can open the second electric telescopic rod 9 to move the first electric telescopic rod 7 to be right above the limiting hole 304, at the moment, the first electric telescopic rod 7 can be opened to enable the limiting block 8 to be inserted into the limiting hole 304 to fix the living body experiment mechanism 3, at the moment, the operator can open the one-way control valve 12 and the driving motor 15 through the control key 18, at the moment, formaldehyde in the formaldehyde storage tank 10 enters the test box 2, the driving motor 15 can drive the fan blades 16 to rotate, so that the formaldehyde gas can be uniformly distributed in the test box 2, the formaldehyde concentration detector 13 can detect the concentration in the test box 2 in real time, and the detection data can be displayed on the data display screen 14, at this moment, the operator can check the state of the white mouse through the glass observation window 17, and simultaneously, the formaldehyde concentration in the test box 2 can be controlled through the one-way control valve 12, and after the test is finished, the operator can open the two-way regulating valve 21, so that the air in the test box 2 can be discharged (because of the formaldehyde in the discharged air, the operator needs to treat the discharged air, and the pollution to the external environment is prevented).
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (7)
1. The utility model provides a test device of simulation formaldehyde, includes base (1), proof box (2) and live body experiment mechanism (3), proof box (2) fixed mounting is in the top of base (1), the top in proof box (2) is placed in live body experiment mechanism (3), its characterized in that: the living body experiment mechanism (3) comprises a cover plate (301) and an animal net box (302), the animal net box (302) is fixedly installed at the bottom of the cover plate (301), a through groove (4) matched with the animal net box (302) is formed in the top of the test box (2), the top of an inner cavity of the test box (2) is fixedly connected with a chute plate (5) on two sides of the animal net box (302), a sliding plate (6) is connected to the inside of the chute plate (5) in a sliding manner, a first electric telescopic rod (7) is fixedly connected to one side of the bottom of the sliding plate (6), a limiting block (8) is fixedly connected to the bottom end of the first electric telescopic rod (7), positioning plates (303) are fixedly connected to two sides of the animal net box (302), and a limiting hole (304) matched with the limiting block (8) for use is formed in the top of the positioning plates (303), one side of the bottom of the chute plate (5) is fixedly provided with a second electric telescopic rod (9) through a connecting block, and one end of the second electric telescopic rod (9) is fixedly connected with one side of the sliding plate (6).
2. The formaldehyde simulation test device as claimed in claim 1, wherein: the top of base (1) and the one side fixedly connected with formaldehyde storage jar (10) that is located proof box (2), the top intercommunication of formaldehyde storage jar (10) has air duct (11), and the top intercommunication intake pipe of formaldehyde storage jar (10), the one end of air duct (11) runs through proof box (2) and extends to the inside of proof box (2), the fixed surface of air duct (11) is connected with one-way control valve (12).
3. The formaldehyde simulation test device as claimed in claim 1, wherein: a formaldehyde concentration detector (13) is fixedly mounted on one side of the inner cavity of the test box (2), and a data display screen (14) is fixedly mounted on the surface of the test box (2).
4. The formaldehyde simulation test device as claimed in claim 1, wherein: the bottom of the inner cavity of the test box (2) is fixedly connected with a driving motor (15) through a connecting plate, fan blades (16) are fixedly mounted on an output shaft of the driving motor (15), and a mesh enclosure (19) matched with the fan blades for use is fixedly mounted at the bottom of the inner cavity of the test box (2).
5. The formaldehyde simulation test device as claimed in claim 4, wherein: the upper portion on test box (2) surface is provided with glass observation window (17), the surface of test box (2) just is located one side of data display screen (14) and passes through connecting plate fixed mounting and have control button (18).
6. The formaldehyde simulation test device as claimed in claim 1, wherein: the bottom fixed mounting of apron (301) has sealed pad (305) to the bottom of sealed pad (305) contacts with the top of proof box (2), the both sides fixed mounting at apron (301) top has handle (306).
7. The formaldehyde simulation test device as claimed in claim 1, wherein: four corners of the top of the test box (2) are communicated with an air outlet pipe (20), and a bidirectional regulating valve (21) is fixedly mounted on the surface of the air outlet pipe (20).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922451763.9U CN211718233U (en) | 2019-12-30 | 2019-12-30 | Test device for simulating formaldehyde |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922451763.9U CN211718233U (en) | 2019-12-30 | 2019-12-30 | Test device for simulating formaldehyde |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211718233U true CN211718233U (en) | 2020-10-20 |
Family
ID=72821215
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922451763.9U Expired - Fee Related CN211718233U (en) | 2019-12-30 | 2019-12-30 | Test device for simulating formaldehyde |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211718233U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115487877A (en) * | 2022-09-30 | 2022-12-20 | 江苏拓米洛环境试验设备有限公司 | Simulation environment test box |
-
2019
- 2019-12-30 CN CN201922451763.9U patent/CN211718233U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115487877A (en) * | 2022-09-30 | 2022-12-20 | 江苏拓米洛环境试验设备有限公司 | Simulation environment test box |
| CN115487877B (en) * | 2022-09-30 | 2024-01-02 | 江苏拓米洛高端装备股份有限公司 | Simulated environment test box |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN211718233U (en) | Test device for simulating formaldehyde | |
| CN103698330B (en) | A kind of experimental provision and method thereof measuring plant respiration | |
| CN204958939U (en) | Medical science inspection microbiological incubator | |
| CN213713386U (en) | Ventilation unit for gas with water conservancy diversion structure | |
| CN213269512U (en) | Pass-through box and food microorganism detection laboratory | |
| CN101096017B (en) | Modified type static inhalation toxicant exposure cabinet | |
| CN107519730A (en) | Device for processing laboratory waste gas | |
| CN208476718U (en) | A kind of H of sulfide2The detection device of S burst size | |
| CN206638580U (en) | A kind of indoor formaldehyde rapid determination device | |
| CN209086022U (en) | A kind of test device and its sample introduction mechanism | |
| CN215217663U (en) | Integrated environmental pollution detection device | |
| CN205463597U (en) | Soil repairing machine | |
| CN202859378U (en) | Inert gas handling device for quick shock of small animals | |
| CN202814849U (en) | Salt-mist corrosion tester | |
| CN212199296U (en) | Stomach cancer cell culture auxiliary assembly | |
| CN206710449U (en) | A kind of sampler for liquid sample detection | |
| CN209302792U (en) | A kind of heating device for collecting escaping gas | |
| CN204260840U (en) | New type checking ultrasound computed tomography inspection machine | |
| CN208990502U (en) | A kind of convenient gas absorption experiment device | |
| CN209198145U (en) | A kind of novel benzyl chloride sampler | |
| CN208872569U (en) | A kind of clinical laboratory's sampler | |
| CN207552289U (en) | Portable animal quarantine platform | |
| CN220690936U (en) | Improved collective protection test device for oxygen production test | |
| CN203269947U (en) | Miniature carbon dioxide cell incubator with fluid pipe interface and electric interface | |
| CN221506660U (en) | Food additive heavy metal content detection device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20201020 |