CN109374797A - A kind of sodium hydroxide liquid-adding device for the detection of sulfur hexafluoride gas acidity - Google Patents
A kind of sodium hydroxide liquid-adding device for the detection of sulfur hexafluoride gas acidity Download PDFInfo
- Publication number
- CN109374797A CN109374797A CN201811031594.7A CN201811031594A CN109374797A CN 109374797 A CN109374797 A CN 109374797A CN 201811031594 A CN201811031594 A CN 201811031594A CN 109374797 A CN109374797 A CN 109374797A
- Authority
- CN
- China
- Prior art keywords
- sodium hydroxide
- liquid
- liquid storage
- carrier gas
- suction pipe
- 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.)
- Pending
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N30/00—Investigating or analysing materials by separation into components using adsorption, absorption or similar phenomena or using ion-exchange, e.g. chromatography or field flow fractionation
- G01N30/02—Column chromatography
- G01N30/04—Preparation or injection of sample to be analysed
- G01N30/16—Injection
Landscapes
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Sampling And Sample Adjustment (AREA)
Abstract
The invention discloses a kind of sodium hydroxide liquid-adding devices for the detection of sulfur hexafluoride gas acidity, wherein: including sodium hydroxide liquid storage device, the inside of sodium hydroxide liquid storage device is equipped with liquid storage space, the top of sodium hydroxide liquid storage device offers filling opening, empty carrier gas air inlet and emptying carrier gas gas outlet, emptying is equipped with check valve on carrier gas gas outlet, sodium hydroxide liquid-adding device further includes pumping device, pumping device includes liquid suction pipe, liquid suction pipe one end is located in the sodium hydroxide solution in liquid storage space, the other end is pierced by sodium hydroxide liquid storage device and connect with sulfur hexafluoride gas acidity detector, one end that liquid suction pipe is located in sodium hydroxide solution is equipped with filter.The present invention has the advantages that can guarantee that concentration of sodium hydroxide solution is not affected by the external environment, the granule foreign in bottle in solution will not block liquid suction pipe or detecting instrument.
Description
Technical field
The invention belongs to the technical fields of gas acidity detection device, and in particular to one kind is used for sulfur hexafluoride gas acidity
The sodium hydroxide liquid-adding device of detection.
Background technique
Concentration of sodium hydroxide solution for the detection of sulfur hexafluoride gas acidity is fixed concentration standard solution, instrument operation
The titration detection that a certain amount of solution participates in sulfur hexafluoride gas acidity, concentration value are extracted in Shi Huicong sodium hydroxide solution bottle
Directly influence the accuracy of testing result.
Past is Conventional glass reagent bottle for the sodium hydroxide solution bottle of sulfur hexafluoride gas acidity detection, when drawing liquid only
Be to protrude into a pipe in bottle, both without filter device, also do not extract solution under closed environment, easily cause it is following after
Fruit:
1, the granule foreign in bottle in solution is pumped into instrument with liquid suction pipe and blocks valve；
2, carbon dioxide when open drawing liquid in air, the sour gas such as sulfur dioxide are easy to react with sodium hydroxide solution, make
It is lower at solution concentration, to influence testing result.
Summary of the invention
The technical problem to be solved by the present invention for the above-mentioned state of the art is to provide one kind can guarantee that sodium hydroxide is molten
Liquid concentration is not affected by the external environment, the granule foreign in bottle in solution will not block liquid suction pipe or detecting instrument be used for hexafluoro
Change the sodium hydroxide liquid-adding device of sulphur gas acidity detection.
To realize the above-mentioned technical purpose, the technical scheme adopted by the invention is as follows:
A kind of sodium hydroxide liquid-adding device for the detection of sulfur hexafluoride gas acidity, in which: including sodium hydroxide liquid storage device, hydrogen
The inside of sodium oxide molybdena liquid storage device is equipped with liquid storage space, and the top of sodium hydroxide liquid storage device offers filling opening, emptying carrier gas air inlet
Mouthful and emptying carrier gas gas outlet, sodium hydroxide solution known to the concentration of storage certain altitude, filling opening energy in liquid storage space
Sodium hydroxide solution is injected to liquid storage space, sealing cover is covered on filling opening, emptying carrier gas air inlet can be into liquid storage space
It is filled with emptying carrier gas, so that the sodium hydroxide solution upper space in liquid storage space is full of by emptying carrier gas completely, liquid storage space
Interior emptying carrier gas can be discharged from emptying carrier gas gas outlet, empty and be equipped with check valve on carrier gas gas outlet, check valve makes outside
Air can not enter liquid storage space from emptying carrier gas gas outlet；Sodium hydroxide liquid-adding device further includes pumping device, pumping device
Including liquid suction pipe, liquid suction pipe one end is located in the sodium hydroxide solution in liquid storage space, the other end be pierced by sodium hydroxide liquid storage device with
The connection of sulfur hexafluoride gas acidity detector, one end that liquid suction pipe is located in sodium hydroxide solution is equipped with filter, filter
It for filtering the granule foreign in sodium hydroxide solution, cannot be introduced into it in liquid suction pipe.
To optimize above-mentioned technical proposal, the concrete measure taken further include:
Above-mentioned filter includes pedestal, filter core, filter disc and footstock, and base bottom offers base holes, and top upwardly extends
It is formed with the Chu Nazuo of annular, filter core and filter disc are sequentially arranged at storage from the bottom to top and receive in seat, and footstock is covered in Chu Nazuo
On, footstock top is connect with drawing liquid tube end, and sodium hydroxide solution can enter filter from base holes, and successively through filtration core and
After filter disc, into liquid suction pipe.
Above-mentioned footstock upper end is equipped with butt joint, and butt joint and storage are received a cavity and be connected to, and drawing liquid tube end is equipped with cutting ferrule,
Cutting ferrule can be inserted into butt joint, and footstock and liquid suction pipe is made to be fixed to each other by frictional force.
Above-mentioned liquid suction pipe is fixedly connected by grip cap with cutting ferrule.
Above-mentioned emptying carrier gas is high pure nitrogen.
One end that above-mentioned liquid suction pipe is pierced by sodium hydroxide liquid storage device is equipped with liquid suction pipe seal nipple, and seal nipple is fixed on
On the shell of sodium hydroxide liquid storage device, liquid suction pipe is pierced by the clearance seal between sodium hydroxide liquid storage device by seal nipple.
Air inlet seal nipple is installed at above-mentioned emptying carrier gas air inlet, air inlet seal nipple is fixed on hydroxide
On the shell of sodium liquid storage device, air inlet seal nipple is used to connect with chromatographic apparatus emptying carrier gas pipe, and chromatographic apparatus empties carrier gas
Guan Nengxiang empties the filling emptying carrier gas of carrier gas air inlet.
Above-mentioned filter core and filter disc can filter the granule foreign in sodium hydroxide solution more than 50 μm.
The material of above-mentioned sodium hydroxide liquid storage device is PTFE.
Sodium hydroxide liquid-adding device of the invention is easy solution to guarantee that outside air can not touch sodium hydroxide,
By the carrier gas (carrier gas of the used discharge of sulfur hexafluoride chromatography purity detecting) of chromatographic apparatus emptying and emptying carrier gas air inlet phase
Even, the carrier gas of emptying will enter sodium hydroxide liquid storage device, be full of the space of sodium hydroxide liquid storage device internal upper part completely, and final
It is discharged to outside sodium hydroxide liquid storage device by check valve and carrier gas outlet.In this way, it can guarantee sodium hydroxide liquid storage
There will not be air in device, the carrier gas overwhelming majority of instrument discharge is High Purity Nitrogen, and minute quantity is detection gas sulfur hexafluoride gas, this two
Nearly all without containing the substance reacted with sodium hydroxide solution in kind gas, therefore it can guarantee that sodium hydroxide solution is dense during drawing liquid
Degree remains constant.Since the air outside solution bottle will not be pumped into bottle by the presence of check valve when instrument drawing liquid.This hair
It is bright that filter has also been devised, it is mounted on sodium hydroxide liquid storage device bottom, may filter that small more than 50 um in sodium hydroxide solution
Granule foreign guarantees that liquid suction pipe and detecting instrument will not block.
Detailed description of the invention
Fig. 1 is structure diagram of the invention；
Fig. 2 is structure semi-cutaway of the invention；
Fig. 3 is the structural schematic diagram of filter；
Fig. 4 is the top view of Fig. 2.
Appended drawing reference therein are as follows: sodium hydroxide liquid storage device 1, liquid storage space 1a, filling opening 2, sealing cover 21, emptying carrier gas
Air inlet 3, air inlet seal nipple 31, emptying carrier gas gas outlet 4, check valve 41, pumping device 5, liquid suction pipe 51, liquid suction pipe are close
Sealing joint 51a, filter 6, pedestal 61, base holes 61a, storage receive a 61b, filter core 62, filter disc 63, footstock 64, butt joint 64a,
Cutting ferrule 65, grip cap 66.
Specific embodiment
The embodiment of the present invention is described in further detail below in conjunction with attached drawing.
A kind of sodium hydroxide liquid-adding device for the detection of sulfur hexafluoride gas acidity of the invention, in which: including hydrogen-oxygen
Change sodium liquid storage device 1, the inside of sodium hydroxide liquid storage device 1 is equipped with liquid storage space 1a, and the top of sodium hydroxide liquid storage device 1, which offers, to be added
Liquid mouth 2 empties carrier gas air inlet 3 and emptying carrier gas gas outlet 4, in the 1a of liquid storage space known to the concentration of storage certain altitude
Sodium hydroxide solution, filling opening 2 can inject sodium hydroxide solution to liquid storage space 1a, be covered with sealing cover 21 on filling opening 2, arrange
Unloaded gas air inlet 3 can be filled with emptying carrier gas into liquid storage space 1a, so that the sodium hydroxide solution top in the 1a of liquid storage space
Space is full of by emptying carrier gas completely, and the emptying carrier gas in the 1a of liquid storage space can be discharged from emptying carrier gas gas outlet 4, empties carrier gas
Check valve 41 is installed, check valve 41 makes outside air that can not enter liquid storage space from emptying carrier gas gas outlet 4 on gas outlet 4
1a；Sodium hydroxide liquid-adding device further includes pumping device 5, and pumping device 5 includes liquid suction pipe 51, and 51 one end of liquid suction pipe is located at liquid storage
In the sodium hydroxide solution of space 1a, the other end is pierced by sodium hydroxide liquid storage device 1 and connect with sulfur hexafluoride gas acidity detector,
One end that liquid suction pipe 51 is located in sodium hydroxide solution is equipped with filter 6, and filter 6 is used in sodium hydroxide solution
Grain contaminant filter, cannot be introduced into it in liquid suction pipe 51.
In embodiment, filter 6 includes pedestal 61, filter core 62, filter disc 63 and footstock 64, and 61 bottom of pedestal offers bottom
Bore 61a, top, which upwardly extends, to be formed with the storage of annular and receives a 61b, and filter core 62 and filter disc 63 are sequentially arranged at storage from the bottom to top
It receives in a 61b, footstock 64 is covered in storage and receives on a 61b, and 64 top of footstock is connect with 51 end of liquid suction pipe, and sodium hydroxide is molten
Liquid can enter filter 6 from base holes 61a, and successively after filtration core 62 and filter disc 63, into liquid suction pipe 51.
In embodiment, 64 upper end of footstock is equipped with butt joint 64a, and butt joint 64a and storage are received a 61b cavity and be connected to, liquid suction pipe
51 ends are equipped with cutting ferrule 65, and cutting ferrule 65 can be inserted into butt joint 64a, keep footstock 64 mutually solid by frictional force with liquid suction pipe 51
It is fixed.
In embodiment, liquid suction pipe 51 is fixedly connected by grip cap 66 with cutting ferrule 65.
In embodiment, emptying carrier gas is high pure nitrogen.
In embodiment, one end that liquid suction pipe 51 is pierced by sodium hydroxide liquid storage device 1 is equipped with liquid suction pipe seal nipple 51a, sealing
Connector 51a is fixed on the shell of sodium hydroxide liquid storage device 1, and liquid suction pipe 51 is pierced by sodium hydroxide liquid storage device 1 by seal nipple 51a
Between clearance seal.
It in embodiment, empties and air inlet seal nipple 31 is installed at carrier gas air inlet 3, air inlet seal nipple 31 is fixed
On the shell of sodium hydroxide liquid storage device 1, air inlet seal nipple 31 is used to connect with chromatographic apparatus emptying carrier gas pipe, chromatograph
Device empties the carrier gas Guan Nengxiang emptying filling emptying carrier gas of carrier gas air inlet 3.
In embodiment, filter core 62 and filter disc 63 can filter the granule foreign in sodium hydroxide solution more than 50 μm.
In embodiment, the material of sodium hydroxide liquid storage device 1 is PTFE.
The newly-designed device of the present invention is the closed solution bottle for having filtering function, and solution bottle material is PTFE, bottle
The carrier gas of instrument emptying is connected by bottleneck bottle cap sealing after middle installation solution with emptying carrier gas air inlet, and the carrier gas of emptying will
Solution bottle can be entered, and be discharged to outside solution bottle eventually by check valve and carrier gas outlet.Hydroxide is extracted under closed environment
Sodium solution, since the air outside solution bottle will not be pumped into bottle by the presence of check valve, so that dioxy in outside air be isolated
Change carbon and generates and chemically react with sodium hydroxide solution with acidic materials.
Because the carrier gas overwhelming majority of instrument discharge is High Purity Nitrogen, minute quantity is detection gas sulfur hexafluoride gas, both
Nearly all without containing the substance reacted with sodium hydroxide solution in gas, therefore it can guarantee concentration of sodium hydroxide solution during drawing liquid
Remain constant.
Filter 6 uses filter core 62 and 63 double filtration of filter disc, guarantees that no more than 50 μm of granule foreign enters pumping
Liquid pipe 51, thus the problem of preventing pumping device blocking.
The above is only the preferred embodiment of the present invention, protection scope of the present invention is not limited merely to above-described embodiment,
All technical solutions belonged under thinking of the present invention all belong to the scope of protection of the present invention.It should be pointed out that for the art
For those of ordinary skill, several improvements and modifications without departing from the principles of the present invention should be regarded as protection of the invention
Range.
Claims (9)
1. a kind of sodium hydroxide liquid-adding device for the detection of sulfur hexafluoride gas acidity, it is characterized in that: including that sodium hydroxide stores up
The inside of liquid device (1), the sodium hydroxide liquid storage device (1) is equipped with liquid storage space (1a), the sodium hydroxide liquid storage device (1)
Top offer filling opening (2), emptying carrier gas air inlet (3) and emptying carrier gas gas outlet (4), the liquid storage space
Sodium hydroxide solution known to the concentration of storage certain altitude, the filling opening (2) can be infused to liquid storage space (1a) in (1a)
Enter sodium hydroxide solution, be covered on filling opening (2) sealing cover (21), the emptying carrier gas air inlet (3) can be to liquid storage sky
Between be filled with emptying carrier gas in (1a) so that the sodium hydroxide solution upper space in liquid storage space (1a) is filled by emptying carrier gas completely
Reprimand, the emptying carrier gas in liquid storage space (1a) can be discharged from emptying carrier gas gas outlet (4), the emptying carrier gas gas outlet (4)
On be equipped with check valve (41), the check valve (41) make outside air can not from emptying carrier gas gas outlet (4) enter liquid storage
Space (1a)；Sodium hydroxide liquid-adding device further includes pumping device (5), and the pumping device (5) includes liquid suction pipe (51), institute
Liquid suction pipe (51) one end stated is located in the sodium hydroxide solution in liquid storage space (1a), and the other end is pierced by sodium hydroxide liquid storage device
(1) it is connect with sulfur hexafluoride gas acidity detector, the liquid suction pipe (51) is located at the installation of one end in sodium hydroxide solution
Have filter (6), the filter (6) is used to filter the granule foreign in sodium hydroxide solution, it is made to cannot be introduced into pumping
In liquid pipe (51).
2. a kind of sodium hydroxide liquid-adding device for the detection of sulfur hexafluoride gas acidity according to claim 1, special
Sign is: the filter (6) includes pedestal (61), filter core (62), filter disc (63) and footstock (64), the pedestal (61)
Bottom offers base holes (61a), and top upwardly extends the Chu Nazuo (61b) for being formed with annular, the filter core (62) and filter
Piece (63) is sequentially arranged at from the bottom to top in Chu Nazuo (61b), and the footstock (64) is covered on Chu Nazuo (61b),
Footstock (64) top is connect with liquid suction pipe (51) end, and sodium hydroxide solution can enter filter from base holes (61a)
(6), and successively after filtration core (62) and filter disc (63), into liquid suction pipe (51).
3. a kind of sodium hydroxide liquid-adding device for the detection of sulfur hexafluoride gas acidity according to claim 2, special
Sign is: footstock (64) upper end is equipped with butt joint (64a), and butt joint (64a) is connected to Chu Nazuo (61b) cavity, described
Liquid suction pipe (51) end be equipped with cutting ferrule (65), the cutting ferrule (65) can be inserted into butt joint (64a), make footstock (64) with
Liquid suction pipe (51) is fixed to each other by frictional force.
4. a kind of sodium hydroxide liquid-adding device for the detection of sulfur hexafluoride gas acidity according to claim 3, special
Sign is: the liquid suction pipe (51) is fixedly connected by grip cap (66) with cutting ferrule (65).
5. a kind of sodium hydroxide liquid-adding device for the detection of sulfur hexafluoride gas acidity according to claim 4, special
Sign is: the emptying carrier gas is high pure nitrogen.
6. a kind of sodium hydroxide liquid-adding device for the detection of sulfur hexafluoride gas acidity according to claim 5, special
Sign is: one end that the liquid suction pipe (51) is pierced by sodium hydroxide liquid storage device (1) is equipped with liquid suction pipe seal nipple (51a), described
Seal nipple (51a) be fixed on the shell of sodium hydroxide liquid storage device (1), liquid suction pipe (51) is pierced by by seal nipple (51a)
Clearance seal between sodium hydroxide liquid storage device (1).
7. a kind of sodium hydroxide liquid-adding device for the detection of sulfur hexafluoride gas acidity according to claim 6, special
Sign is: being equipped with air inlet seal nipple (31) at the emptying carrier gas air inlet (3), the air inlet seal nipple
(31) it is fixed on the shell of sodium hydroxide liquid storage device (1), air inlet seal nipple (31) is used to empty carrier gas with chromatographic apparatus
Pipe connection, chromatographic apparatus emptying carrier gas Guan Nengxiang emptying carrier gas air inlet (3) the filling emptying carrier gas.
8. a kind of sodium hydroxide liquid-adding device for the detection of sulfur hexafluoride gas acidity according to claim 7, special
Sign is: the filter core (62) and filter disc (63) can filter the granule foreign in sodium hydroxide solution more than 50 μm.
9. a kind of sodium hydroxide liquid-adding device for the detection of sulfur hexafluoride gas acidity according to claim 8, special
Sign is: the material of the sodium hydroxide liquid storage device (1) is PTFE.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811031594.7A CN109374797A (en) | 2018-09-05 | 2018-09-05 | A kind of sodium hydroxide liquid-adding device for the detection of sulfur hexafluoride gas acidity |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811031594.7A CN109374797A (en) | 2018-09-05 | 2018-09-05 | A kind of sodium hydroxide liquid-adding device for the detection of sulfur hexafluoride gas acidity |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109374797A true CN109374797A (en) | 2019-02-22 |
Family
ID=65404622
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811031594.7A Pending CN109374797A (en) | 2018-09-05 | 2018-09-05 | A kind of sodium hydroxide liquid-adding device for the detection of sulfur hexafluoride gas acidity |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109374797A (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05164663A (en) * | 1991-12-12 | 1993-06-29 | Ebara Infilco Co Ltd | Method and device for measuring concentration of constituent within liquid |
| CN202376845U (en) * | 2011-12-30 | 2012-08-15 | 檀志远 | Fine self-cleaning water-injection filter device |
| CN203767976U (en) * | 2014-02-27 | 2014-08-13 | 常州瑞择微电子科技有限公司 | Automatic liquid charging mechanism of SPM system |
| CN204133850U (en) * | 2014-08-26 | 2015-02-04 | 华仁药业（日照）有限公司 | A kind of storage facility of sodium hydroxide titration liquid |
| CN206463616U (en) * | 2017-01-24 | 2017-09-05 | 惠州市鸿宇泰科技有限公司 | A kind of etching solution filtering and purifying |
| CN207142898U (en) * | 2017-08-08 | 2018-03-27 | 杭州航民江东热电有限公司 | Neutralization pond |
| CN207370900U (en) * | 2017-03-07 | 2018-05-18 | 林莹 | A kind of patient is multi-functional to feed drink device |
| CN209117637U (en) * | 2018-09-05 | 2019-07-16 | 徐军 | A kind of sodium hydroxide liquid-adding device for the detection of sulfur hexafluoride gas acidity |
-
2018
- 2018-09-05 CN CN201811031594.7A patent/CN109374797A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05164663A (en) * | 1991-12-12 | 1993-06-29 | Ebara Infilco Co Ltd | Method and device for measuring concentration of constituent within liquid |
| CN202376845U (en) * | 2011-12-30 | 2012-08-15 | 檀志远 | Fine self-cleaning water-injection filter device |
| CN203767976U (en) * | 2014-02-27 | 2014-08-13 | 常州瑞择微电子科技有限公司 | Automatic liquid charging mechanism of SPM system |
| CN204133850U (en) * | 2014-08-26 | 2015-02-04 | 华仁药业（日照）有限公司 | A kind of storage facility of sodium hydroxide titration liquid |
| CN206463616U (en) * | 2017-01-24 | 2017-09-05 | 惠州市鸿宇泰科技有限公司 | A kind of etching solution filtering and purifying |
| CN207370900U (en) * | 2017-03-07 | 2018-05-18 | 林莹 | A kind of patient is multi-functional to feed drink device |
| CN207142898U (en) * | 2017-08-08 | 2018-03-27 | 杭州航民江东热电有限公司 | Neutralization pond |
| CN209117637U (en) * | 2018-09-05 | 2019-07-16 | 徐军 | A kind of sodium hydroxide liquid-adding device for the detection of sulfur hexafluoride gas acidity |
Non-Patent Citations (1)
| Title |
|---|
| 宋丽华 等: "《分析化学技术》", 31 January 2016, 重庆大学出版社 * |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US3994423A (en) | Drop dispensing apparatus for laboratory reagents | |
| CN211870290U (en) | On-site inspection or calibration oil storage device for oil chromatography on-line monitoring device in high-altitude area | |
| CN208119670U (en) | sampling bottle | |
| CN209117637U (en) | A kind of sodium hydroxide liquid-adding device for the detection of sulfur hexafluoride gas acidity | |
| JPH01277734A (en) | Fluid sample carrier | |
| CN109374797A (en) | A kind of sodium hydroxide liquid-adding device for the detection of sulfur hexafluoride gas acidity | |
| CN207798767U (en) | A kind of simple gas density measuring device | |
| CN207336136U (en) | Micro pressure sampler for oil contamination degree detector | |
| CN206274297U (en) | Haemolysis device, liquid-way system and glycolated hemoglobin analysis | |
| CN101105482B (en) | Usage method for electrochromatography capillary column production device | |
| CN109484764A (en) | A kind of storage wine jar sealing cover gas detection sampling mechanism | |
| CN110960265A (en) | Saliva collector | |
| CN209108913U (en) | Sulfur hexafluoride gas acidity detecting instrument adsorption filtration device | |
| CN205844283U (en) | A kind of Novel liquid-phase chromatographic grade flowing phase apparatus for placing | |
| CN109187846B (en) | Sealed sample injection device for detecting acidity of sulfur hexafluoride gas | |
| CN208350463U (en) | Gas sample bottle | |
| CN209542543U (en) | A kind of high performance liquid chromatograph | |
| CN105181387A (en) | Special sampling bottle for collecting water sample containing volatile substance and oxygen-sensitive substance | |
| CN209603986U (en) | For CO2On-spot collection system of flooding extraction well gas | |
| CN209027995U (en) | A kind of field quick detection surface-enhanced Raman detection chip box | |
| CN106989959B (en) | A kind of pipeline liquid enclosed sampling method | |
| CN208775268U (en) | A kind of liquid chromatogram liquid storage bottle | |
| CN208459416U (en) | Micro-fluidic chip is loaded sealing system and the cytoanalyze comprising it | |
| CN107132095B (en) | Source manufacturing system for carbon-14 measurement | |
| CN208287549U (en) | Solid phase microextraction pre-treatment component and solid-phase micro-extracting device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20190222 |