CN208082251U - A kind of buffer preparation device - Google Patents
A kind of buffer preparation device Download PDFInfo
- Publication number
- CN208082251U CN208082251U CN201820040011.6U CN201820040011U CN208082251U CN 208082251 U CN208082251 U CN 208082251U CN 201820040011 U CN201820040011 U CN 201820040011U CN 208082251 U CN208082251 U CN 208082251U
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- bottle
- bottleneck
- buret
- fixed plate
- reagent
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Abstract
The utility model discloses a kind of buffer preparation devices, belong to experimental apparatus field, for solving the problems, such as that existing buffer preparation efficiency is slow.Including the first buret, the second buret, prepare bottle, the first reagent bottle, the second reagent bottle, PH meter electrodes and holder, the side wall for preparing bottle is equipped with left connecting tube and right connecting tube, the other end of left connecting tube is connected with the bottom of the side wall of the first reagent bottle, and the other end of right connecting tube is connected with the bottom of the side wall of the second reagent bottle；Left connecting tube is equipped with left valve and left flowmeter, and right connecting tube is equipped with right valve and right flowmeter, and the bottom of the first reagent bottle and the second reagent bottle is above the left connector for preparing bottle and right connector；It prepares bottle and sets the bottom for preparing the side wall of bottle there are three bottleneck, respectively the first bottleneck, the second bottleneck and third bottleneck equipped with outlet and outlet valve, the first buret, the second buret and PH meter electrodes are each attached on holder.
Description
Technical field
The utility model is related to experimental apparatus apparatus fields, and in particular to a kind of buffer preparation device.
Background technology
Buffer solution refers to the mixed solution being made of weak acid and its salt, weak base and its salt, can support to a certain extent
Disappear, mitigate the influence of additional strong acid or highly basic to solution acid alkalinity, to keep the pH value of solution to stablize relatively.Analysis test
In, require that the pH value of solution is maintained within the scope of one in many reactions such as complexometry and spectrophotometry, to ensure
The discoloration of indicator and the colour developing of color developing agent etc., these conditions are all reached by the way that a certain amount of buffer solution is added, so
Buffer solution is a kind of reagent being frequently necessary in analysis test.
Preparation buffer solution is cumbersome in existing laboratory, and step is also comparatively laborious, and that uses is more with container,
Confecting efficiency is slow, how to solve the problems, such as that existing buffer preparation efficiency is slow, becomes the direction of those skilled in the art's research.
Utility model content
In order to solve the problems, such as that existing buffer preparation efficiency is slow, the utility model provides a kind of buffer preparation dress
It sets.
In order to solve the above technical problems, the utility model provides following technical scheme：
A kind of buffer preparation device, including the first buret, the second buret, preparation bottle, the first reagent bottle, second
Reagent bottle, PH meter electrodes and holder, the side wall for preparing bottle are equipped with left connector and right connector, and the left connector connects
It is connected to left connecting tube, the right connector is connected with right connecting tube, the side of the other end and the first reagent bottle of the left connecting tube
The bottom of wall is connected, and the other end of the right connecting tube is connected with the bottom of the side wall of the second reagent bottle；In the left connecting tube
Equipped with left valve and left flowmeter, the right connecting tube is equipped with right valve and right flowmeter, the bottom of first reagent bottle
Higher than left connector, the bottom of second reagent bottle is higher than right connector；
The preparation bottle is set there are three bottleneck, respectively the first bottleneck, the second bottleneck and third bottleneck, the preparation bottle
The bottom of side wall is equipped with outlet, and the outlet is equipped with outlet valve, and first buret stretches into preparation by the first bottleneck
Bottle is internal, and second buret is stretched by the second bottleneck and prepared inside bottle, and the PH meters electrode is stretched by third bottleneck
It prepares inside bottle, first buret, the second buret and PH meter electrodes are each attached on holder.
Further, the bottom for preparing bottle is equipped with cushion block and pedestal, and the cushion block is set on the base, the preparation
The side wall of bottle is equipped with fastening item coil assembly, and the fastening item coil assembly includes necklace, fixed plate and screw, and the necklace includes
Left fastening necklace and right fastening necklace, the fixed plate include left fixed plate and right fixed plate, the screw include left screw and
Right screw, is equipped with threaded hole in the left fixed plate and right fixed plate, the left screw pass through the threaded hole of left fixed plate with
Left fastening necklace be connected, the right screw pass through right fixed plate threaded hole be connected with right fastening necklace, the left fixed plate with
The other end of right fixed plate is fixed on the base, and fixed block can make preparation bottle have a certain distance apart from pedestal, and handle is facilitated to match
Good buffer solution is picked out from the bottom for preparing bottle, while being fastened a coil assembly and can further be fastened to preparing bottle.
Further, the bottom of the holder is fixed on the base, and all relevant accessories are all located on pedestal, are conducive to
The stability of control device for formulating is carried out on the whole.
Further, first reagent bottle and the second reagent bottle are narrow-mouthed bottle, and are formulated with seal cap, narrow-mouthed bottle
Be conducive to be sealed, seal cap can seal up reagent bottle after adding reagent, prevent pollution reagent.
Further, it is respectively provided with by sealing rubber cap on first bottleneck, the second bottleneck and third bottleneck, the sealing
Rubber cap is equipped with opening, and the outer wall that the opening counts electrode with the first buret, the second buret and PH respectively is tightly connected,
Prevent outside dust from entering pollution reagent.
The operation principle of the utility model：As long as prepare before it is understood that the buffer solution to be prepared pH, through tabling look-up
Calculate the ratio and dosage of two kinds of reagents used.The first reagent is added in the first reagent bottle, second of reagent is added
Enter into the second reagent bottle, while the first reagent of comparable sodium is added in the first buret, the second of comparable sodium
Reagent is added in the second buret, it is contemplated that the residual of pipeline and wall and adds the reagent into a little comparable sodiums, left stream
Gauge and right flowmeter are adjusted to identical flow value, open simultaneously left valve and right valve, the first reagent in the first reagent bottle
It being flowed into and is prepared in bottle along left connecting tube, the second reagent in the second reagent bottle is flowed into along right connecting tube and prepares in bottle,
After a period of time, left valve and right valve are simultaneously closed off, left valve and right valve and their pipeline are equal relative to bottle is prepared
It is arranged symmetrically, after two kinds of reagents are being prepared in bottle and fully to be reacted, whether the solution PH measured after reaction with PH meter electrodes reaches
To the PH of solution to be prepared, gone out according to mathematic interpolation need plus the value of the first reagent or the second reagent number, then lead to
It crosses the first buret or the second buret is added dropwise, until reaching the pH of the buffer solution to be prepared.
The utility model has an advantageous effect in that compared with prior art：
As long as it is understood that the pH of the buffer solution to be prepared, two kinds of reagents used can be calculated through tabling look-up before 1, preparing
Ratio and dosage.The first reagent is added in the first reagent bottle, second of reagent is added in the second reagent bottle, simultaneously
First reagent of comparable sodium is added in the first buret, the second reagent of comparable sodium is added to the second buret
In, left flowmeter and right flowmeter are adjusted to identical flow value, open simultaneously left valve and right valve, after a period of time, together
When close left valve and right valve, it is molten after measuring reaction with PH meter electrodes after two kinds of reagents are being prepared in bottle and fully to be reacted
Whether liquid PH reaches the PH of solution to be prepared, if not going out to need according to mathematic interpolation be added the first reagent or second examination
The value of agent number, be then precisely added dropwise by the first buret or the second buret, until reach to be prepared it is slow
The pH of fliud flushing, the container bottle used in the process is few, simple to operate, and confecting efficiency compared with prior art improves.
2, the bottom for preparing bottle is equipped with cushion block and pedestal, and the cushion block is set on the base, the side for preparing bottle
Wall is equipped with fastening item coil assembly, and the fastening item coil assembly includes necklace, fixed plate and screw, and the necklace includes left fastening
Necklace and right fastening necklace, the fixed plate include left fixed plate and right fixed plate, and the screw includes left screw and right screw,
Threaded hole is equipped in the left fixed plate and right fixed plate, the left screw passes through the threaded hole of left fixed plate and left fastening item
Circle is connected, and the right screw passes through the threaded hole of right fixed plate to be connected with right fastening necklace, the left fixed plate and right fixed plate
The other end be fixed on the base, fixed block can make preparation bottle have a certain distance apart from pedestal, facilitate the buffering prepared
Solution from prepare bottle bottom pick out, while fasten a coil assembly can to prepare bottle further fasten.
3, the bottom of the holder is fixed on the base, and all relevant accessories are all located on pedestal, are conducive to from entirety
The upper stability for carrying out control device for formulating.
4, first reagent bottle and the second reagent bottle are narrow-mouthed bottle, and are formulated with seal cap, and narrow-mouthed bottle is conducive to
It is sealed, seal cap can seal up reagent bottle after adding reagent, prevent pollution reagent.
5, it is respectively provided with by sealing rubber cap on first bottleneck, the second bottleneck and third bottleneck, the sealing rubber cap
It is equipped with opening, the outer wall that the opening counts electrode with the first buret, the second buret and PH respectively is tightly connected, prevents outer
Face dust enters pollution reagent.
Description of the drawings
Fig. 1 is the structural schematic diagram of the utility model.
It is marked in figure：The right fixed plates of 1-, the right fastening necklaces of 2-, the right screws of 3-, the right connecting tubes of 4-, the second reagent bottles of 5-, 6-
Right valve, the right flowmeters of 7-, 8- prepare bottle, 9- third bottlenecks, the second bottlenecks of 10-, 11-PH meter electrodes, 12- holders, 13- second
Buret, the first burets of 14-, the first bottlenecks of 15-, the left flowmeters of 16-, the left valves of 17-, 18- seal caps, the first reagents of 19-
Bottle, the left connecting tubes of 20-, the left screws of 21-, the left fastening necklaces of 22-, the left fixed plates of 23-, 24- pedestals, 25- cushion blocks.
Specific implementation mode
With reference to embodiment, the utility model will be further described, and described embodiment is only that this practicality is new
Type a part of the embodiment is not whole embodiment.Based on the embodiments of the present invention, the ordinary skill people of this field
Other embodiments used that member is obtained without making creative work, belong to the protection model of the utility model
It encloses.
As shown in Figure 1, a kind of buffer preparation device, including the first buret 14, the second buret 13, prepare bottle 8,
First reagent bottle 19, the second reagent bottle 5, PH meter electrodes 11 and holder 12, the side wall for preparing bottle 8 be equipped with left connector and
Right connector, the left connector are connected with left connecting tube 20, and the right connector is connected with right connecting tube 4, the left connection
The connection integrated with the bottom of side wall of the first reagent bottle 19 of the other end of pipe 20, the other end and second of the right connecting tube 4
The bottom integration connection of the side wall of reagent bottle 5；The left connecting tube 20 is equipped with left valve 17 and left flowmeter 16, the right side
Connecting tube 4 is equipped with right valve 6 and right flowmeter 7, and the bottom of first reagent bottle 19 is higher than left connector, second examination
The bottom of agent bottle 5 is higher than right connector；
As long as it is understood that the pH of the buffer solution to be prepared, the ratio of two kinds of reagents used can be calculated through tabling look-up before preparing
Example and dosage.The first reagent is added in the first reagent bottle 19, second of reagent is added in the second reagent bottle 5, together
When the first reagent of comparable sodium is added in the first buret 14, the second reagent of comparable sodium is added to the second titration
In pipe 13, it is contemplated that the residual of pipeline and wall and add the reagent into a little comparable sodiums, left flowmeter 16 and right flowmeter 7
It is adjusted to identical flow value, opens simultaneously left valve 17 and right valve 6, the first reagent in the first reagent bottle 19 is along left connection
Pipe 20, which is flowed into, to be prepared in bottle 8, and the second reagent in the second reagent bottle 5 is flowed into along right connecting tube 4 and prepares in bottle 8, one section
After time, left valve 17 and right valve 6 are simultaneously closed off, left valve 17 and right valve 6 and their pipeline are relative to preparation bottle 8
It is arranged symmetrically, after two kinds of reagents are being prepared in bottle 8 and fully to be reacted, the solution PH measured after reaction with PH meter electrodes 11 is
The no PH for reaching solution to be prepared, gone out according to mathematic interpolation need plus the value of the first reagent or the second reagent number, so
It is added dropwise by the first buret 14 or the second buret 13, until reaching the pH of the buffer solution to be prepared, is beaten afterwards
Outlet valve is opened, prepared buffer solution is picked out from outlet.
As a kind of preferred mode of the utility model, the bottom for preparing bottle 8 is equipped with cushion block 25 and pedestal 24, described
Cushion block 25 is arranged on pedestal 24, and the side wall for preparing bottle 8 is equipped with fastening item coil assembly, and the fastening item coil assembly includes
Necklace, fixed plate and screw, the necklace include left fastening necklace 22 and right fastening necklace 2, and the fixed plate includes left fixation
Plate 23 and right fixed plate 1, the screw include left screw 21 and right screw 3, are all provided in the left fixed plate 23 and right fixed plate 1
There are threaded hole, the left screw 21 that the threaded hole of left fixed plate 23 is passed through to be connected with left fastening necklace 22, the right screw 3 passes through
The threaded hole of right fixed plate 1 is connected with right fastening necklace 2, and the other end of the left fixed plate 23 and right fixed plate 1 is fixed on bottom
Seat 24 on, fixed block can make preparation bottle 8 have a certain distance apart from pedestal 24, facilitate the buffer solution prepared from prepare bottle
8 bottom picks out, while fastening a coil assembly can be to preparing the further fastening of bottle 8.
As a kind of preferred mode of the utility model, the bottom of the holder 12 is fixed on pedestal 24, all correlations
Accessory be all located on pedestal 24, be conducive to the stability for carrying out control device for formulating on the whole.
As a kind of preferred mode of the utility model, first reagent bottle, 19 and second reagent bottle 5 is narrow-mouthed bottle,
And it is formulated with seal cap 18, narrow-mouthed bottle is conducive to be sealed, and seal cap 18 can seal up reagent bottle after adding reagent,
Prevent pollution reagent.
It is equal on first bottleneck 15, the second bottleneck 10 and third bottleneck 9 as a kind of preferred mode of the utility model
By sealing rubber cap, the sealing rubber cap is equipped with opening for setting, and the opening is titrated with the first buret 14, second respectively
The outer wall of pipe 13 and PH meter electrodes 11 is tightly connected, and prevents outside dust from entering pollution reagent.
Embodiment 1：
As shown in Figure 1, a kind of buffer preparation device, including the first buret 14, the second buret 13, prepare bottle 8,
First reagent bottle 19, the second reagent bottle 5, PH meter electrodes 11 and holder 12, the side wall for preparing bottle 8 be equipped with left connector and
Right connector, the left connector are connected with left connecting tube 20, and the right connector is connected with right connecting tube 4, the left connection
The other end of pipe 20 is connected with the bottom of the side wall of the first reagent bottle 19, the other end of the right connecting tube 4 and the second reagent bottle 5
Side wall bottom be connected；The left connecting tube 20 is equipped with left valve 17 and left flowmeter 16, and the right connecting tube 4 is equipped with
The bottom of right valve 6 and right flowmeter 7, first reagent bottle 19 is higher than left connector, and the bottom of second reagent bottle 5 is high
In right connector；
The preparation bottle 8 is set there are three bottleneck, and respectively the first bottleneck 15, the second bottleneck 10 and third bottleneck 9 are described to match
The bottom of the side wall of bottle 8 processed is equipped with outlet, and the outlet is equipped with outlet valve, and first buret 14 passes through the first bottleneck
15 stretch into inside preparation bottle 8, and second buret 13 is stretched by the second bottleneck 10 and prepared inside bottle 8, and the PH counts electrode
11 are stretched by third bottleneck 9 inside preparation bottle 8, and first buret 14, the second buret 13 and PH meter electrodes 11 are solid
It is scheduled on holder 12.
Embodiment 2：
As shown in Figure 1, a kind of buffer preparation device, including the first buret 14, the second buret 13, prepare bottle 8,
First reagent bottle 19, the second reagent bottle 5, PH meter electrodes 11 and holder 12, the side wall for preparing bottle 8 be equipped with left connector and
Right connector, the left connector are connected with left connecting tube 20, and the right connector is connected with right connecting tube 4, the left connection
The other end of pipe 20 is connected with the bottom of the side wall of the first reagent bottle 19, the other end of the right connecting tube 4 and the second reagent bottle 5
Side wall bottom be connected；The left connecting tube 20 is equipped with left valve 17 and left flowmeter 16, and the right connecting tube 4 is equipped with
The bottom of right valve 6 and right flowmeter 7, first reagent bottle 19 is higher than left connector, and the bottom of second reagent bottle 5 is high
In right connector；
The preparation bottle 8 is set there are three bottleneck, and respectively the first bottleneck 15, the second bottleneck 10 and third bottleneck 9 are described to match
The bottom of the side wall of bottle 8 processed is equipped with outlet, and the outlet is equipped with outlet valve, and first buret 14 passes through the first bottleneck
15 stretch into inside preparation bottle 8, and second buret 13 is stretched by the second bottleneck 10 and prepared inside bottle 8, and the PH counts electrode
11 are stretched by third bottleneck 9 inside preparation bottle 8, and first buret 14, the second buret 13 and PH meter electrodes 11 are solid
It is scheduled on holder 12.
The bottom for preparing bottle 8 is equipped with cushion block 25 and pedestal 24, and the cushion block 25 is arranged on pedestal 24, the preparation
The side wall of bottle 8 is equipped with fastening item coil assembly, and the fastening item coil assembly includes necklace, fixed plate and screw, the necklace packet
Left fastening necklace 22 and right fastening necklace 2 are included, the fixed plate includes left fixed plate 23 and right fixed plate 1, and the screw includes
Left screw 21 and right screw 3, threaded hole is equipped in the left fixed plate 23 and right fixed plate 1, and the left screw 21 passes through a left side
The threaded hole of fixed plate 23 is connected with left fastening necklace 22, and the right screw 3 passes through the threaded hole of right fixed plate 1 and right fastening item
Circle 2 is connected, and the other end of the left fixed plate 23 and right fixed plate 1 is fixed on pedestal 24.
Preferably, the bottom of the holder 12 is fixed on pedestal 24.
Embodiment 3：
As shown in Figure 1, a kind of buffer preparation device, including the first buret 14, the second buret 13, prepare bottle 8,
First reagent bottle 19, the second reagent bottle 5, PH meter electrodes 11 and holder 12, the side wall for preparing bottle 8 be equipped with left connector and
Right connector, the left connector are connected with left connecting tube 20, and the right connector is connected with right connecting tube 4, the left connection
The other end of pipe 20 is connected with the bottom of the side wall of the first reagent bottle 19, the other end of the right connecting tube 4 and the second reagent bottle 5
Side wall bottom be connected；The left connecting tube 20 is equipped with left valve 17 and left flowmeter 16, and the right connecting tube 4 is equipped with
The bottom of right valve 6 and right flowmeter 7, first reagent bottle 19 is higher than left connector, and the bottom of second reagent bottle 5 is high
In right connector；
The preparation bottle 8 is set there are three bottleneck, and respectively the first bottleneck 15, the second bottleneck 10 and third bottleneck 9 are described to match
The bottom of the side wall of bottle 8 processed is equipped with outlet, and the outlet is equipped with outlet valve, and first buret 14 passes through the first bottleneck
15 stretch into inside preparation bottle 8, and second buret 13 is stretched by the second bottleneck 10 and prepared inside bottle 8, and the PH counts electrode
11 are stretched by third bottleneck 9 inside preparation bottle 8, and first buret 14, the second buret 13 and PH meter electrodes 11 are solid
It is scheduled on holder 12.
Preferably, first reagent bottle, 19 and second reagent bottle 5 is narrow-mouthed bottle, and it is formulated with seal cap 18.
Preferably, being respectively provided with by sealing rubber cap, institute on first bottleneck 15, the second bottleneck 10 and third bottleneck 9
It states sealing rubber cap and is equipped with opening, the opening counts electrode 11 with the first buret 14, the second buret 13 and PH respectively
Outer wall is tightly connected.
The above is only the preferred embodiment of the utility model only, is not intended to limit the utility model, all at this
All any modification, equivalent and improvement etc., should be included in the utility model made by within the spirit and principle of utility model
Protection domain within.
Claims (5)
1. a kind of buffer preparation device, which is characterized in that including the first buret (14), the second buret (13), prepare
Bottle (8), the first reagent bottle (19), the second reagent bottle (5), PH meter electrodes (11) and holder (12), the side wall for preparing bottle (8)
It is equipped with left connector and right connector, the left connector is connected with left connecting tube (20), and the right connector is connected with the right side
The other end of connecting tube (4), the left connecting tube (20) is connected with the bottom of the side wall of the first reagent bottle (19), the right connection
The other end of pipe (4) is connected with the bottom of the side wall of the second reagent bottle (5)；The left connecting tube (20) is equipped with left valve (17)
With left flowmeter (16), the right connecting tube (4) is equipped with right valve (6) and right flowmeter (7), first reagent bottle (19)
Bottom be higher than left connector, the bottom of second reagent bottle (5) is higher than right connector；
The preparation bottle (8) sets there are three bottleneck, respectively the first bottleneck (15), the second bottleneck (10) and third bottleneck (9), institute
The bottom for stating the side wall for preparing bottle (8) is equipped with outlet, and the outlet is equipped with outlet valve, and first buret (14) passes through
First bottleneck (15), which stretches into, prepares bottle (8) inside, and second buret (13) is stretched by the second bottleneck (10) and prepares bottle (8)
Inside, the PH meter electrodes (11) are stretched by third bottleneck (9) prepares bottle (8) inside, first buret (14), second
Buret (13) and PH meter electrodes (11) are each attached on holder (12).
2. a kind of buffer preparation device according to claim 1, which is characterized in that the bottom for preparing bottle (8)
Equipped with cushion block (25) and pedestal (24), the cushion block (25) is arranged on pedestal (24), and the side wall for preparing bottle (8) is equipped with
Item coil assembly is fastened, the fastening item coil assembly includes necklace, fixed plate and screw, and the necklace includes left fastening necklace (22)
With right fastening necklace (2), the fixed plate includes left fixed plate (23) and right fixed plate (1), and the screw includes left screw
(21) and right screw (3) it, is equipped with threaded hole on the left fixed plate (23) and right fixed plate (1), the left screw (21) is worn
The threaded hole for crossing left fixed plate (23) is connected with left fastening necklace (22), and the right screw (3) passes through the screw thread of right fixed plate (1)
Hole is connected with right fastening necklace (2), and the other end of the left fixed plate (23) and right fixed plate (1) is fixed on pedestal (24).
3. a kind of buffer preparation device according to claim 2, which is characterized in that the bottom of the holder (12) is solid
It is scheduled on pedestal (24).
4. a kind of buffer preparation device according to claim 1, which is characterized in that first reagent bottle (19) and
Second reagent bottle (5) is narrow-mouthed bottle, and is formulated with seal cap (18).
5. a kind of buffer preparation device according to claim 1, which is characterized in that first bottleneck (15),
It is respectively provided with by sealing rubber cap on two bottlenecks (10) and third bottleneck (9), the sealing rubber cap is equipped with opening, the opening
It is tightly connected respectively with the outer wall of the first buret (14), the second buret (13) and PH meter electrode (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820040011.6U CN208082251U (en) | 2018-01-10 | 2018-01-10 | A kind of buffer preparation device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820040011.6U CN208082251U (en) | 2018-01-10 | 2018-01-10 | A kind of buffer preparation device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208082251U true CN208082251U (en) | 2018-11-13 |
Family
ID=64065523
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820040011.6U Expired - Fee Related CN208082251U (en) | 2018-01-10 | 2018-01-10 | A kind of buffer preparation device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208082251U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110801743A (en) * | 2019-10-30 | 2020-02-18 | 遵义医学院附属医院 | Multi-gradient alcohol quantitative preparation bottle |
-
2018
- 2018-01-10 CN CN201820040011.6U patent/CN208082251U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110801743A (en) * | 2019-10-30 | 2020-02-18 | 遵义医学院附属医院 | Multi-gradient alcohol quantitative preparation bottle |
| CN110801743B (en) * | 2019-10-30 | 2021-10-01 | 遵义医学院附属医院 | Multi-gradient alcohol quantitative preparation bottle |
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|---|---|---|---|
| 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: 20181113 Termination date: 20190110 |