CN208599790U - The protection and extraction raffinate processing unit of pipette - Google Patents
The protection and extraction raffinate processing unit of pipette Download PDFInfo
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- CN208599790U CN208599790U CN201820148301.2U CN201820148301U CN208599790U CN 208599790 U CN208599790 U CN 208599790U CN 201820148301 U CN201820148301 U CN 201820148301U CN 208599790 U CN208599790 U CN 208599790U
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Abstract
The utility model relates to the protection of pipette and extraction raffinate processing units; including support base, top tray, lower tray, liquid accumulating device, telescopic rod and protective cover; telescopic rod bottom end is connect by bearing with support base; telescopic rod includes upper boom and the lower beam that is set on upper boom and connect with base rotation; finite place piece is set between the outer wall of upper boom and the inner wall of lower beam, to realize the restriction of upper stick position；Lower tray is fixedly connected with lower beam, and liquid accumulating device is located at below lower tray, and is detachably connected with lower beam；Top tray is located above lower tray, and is fixedly connected with upper boom, and protective cover is arranged on upper boom top；Protective cover include the top plate being fixedly connected with upper boom, be fixedly connected with top plate side wall it is foldable hold court from behind a screen, it is foldable hold court from behind a screen it is upper be symmetrical arranged 2 for placing the earholes of washing of ear washing bulb, foldable bottom end of holding court from behind a screen is circumferentially arranged exacerbation ring.The device has many advantages, such as convenience, is reliably and securely tested and stored pipette.
Description
Technical field
The utility model belongs to the auxiliary tool field of medical laboratory, and in particular to the protection of pipette and extraction raffinate processing
Device.
Background technique
In the experiment of the subjects such as molecular biology, microbiology, medicine, need to measure reagent using pipette,
When specific operation, usually every kind of reagent configures a dedicated pipette, to prevent reagent to be contaminated.
Existing pipet stand is there are mainly two types of pattern, one is trapezoidal transverse pipet rack, by pipette cross when use
Be placed on above, pipette after by just washing has been used managed after putting in water droplet can not flow out thus be unfavorable for its drying.Separately
One is disc type pipet stands, using the form of upper and lower two disks, be respectively arranged on upper lower disc mutual corresponding macropore and
Aperture is for fixing pipette, and water droplet can directly drip to experiment table top, shadow in pipe after the pipet stand after scrubbing is placed on it
It rings clean and tidy.
In addition, in actual use, pipette and ear washing bulb cooperation are practical, but the circular nature of ear washing bulb put it should not
It sets on the table top beside pipet stand, to cause to require to find ear washing bulb when taking liquid every time, expends experimental period.
Bottom is deposited due to current pipet stand and is not provided with hydrops ware, examination can not be left in pipette in test
Agent is accepted, so that testing stand is contaminated；Also the remaining water in the pipette after washing can not be accepted, drops to it
On mounting table, it is clean and tidy to influence testing stand；The ear washing bulb that ear washing bulb and pipette are used cooperatively can not be placed on rack simultaneously
On, cause experimental implementation inconvenient.
Utility model content
The purpose of the utility model is to provide the protection of pipette and extraction raffinate processing unit, with overcome existing pipette without
Method undertaking extraction raffinate, the problem of can not being put together ear washing bulb and pipette, and proofing dust and protecting can not be carried out to pipette.
For this purpose, the technical solution of the utility model is as follows:
The protection and extraction raffinate processing unit of pipette, including support base, top tray, lower tray, liquid accumulating device, telescopic rod and guarantor
Shield, the telescopic rod bottom end are connect by bearing with support base, the telescopic rod include upper boom and be set on upper boom and with
The lower beam of base rotation connection, is arranged finite place piece between the outer wall of the upper boom and the inner wall of lower beam, to realize upper stick position
Restriction；The lower tray is fixedly connected with lower beam, and the liquid accumulating device is located at below lower tray, and is detachably connected with lower beam；
The top tray is located above lower tray, and is fixedly connected with upper boom, and the protective cover is arranged on upper boom top；The protective cover
Including be fixedly connected with upper boom top plate, be fixedly connected with top plate side wall it is foldable hold court from behind a screen, foldable hold court from behind a screen upper is symmetrical arranged 2
A earhole of washing for being used to place ear washing bulb, foldable bottom end of holding court from behind a screen is circumferentially arranged exacerbation ring.
Embodiment as a further preference, the locating part are positioning pin, which is arranged in the lower beam
Bottom end, the lower beam side wall are evenly arranged with long row's location hole that several are equally spaced along axial direction, location hole with for
The pin pearl of positioning pin passes through；Be additionally provided with the card convex for axially extending and outwardly protruding on the upper boom, the lower beam be equipped with
The card slot of the card convex cooperation being recessed inwardly, with the axial limiting for realizing upper boom and lower beam and circumferentially limit.
Embodiment as a further preference, the liquid accumulating device include the first half wares and the second half wares, the first half wares, the
2 half wares have a hole wall at semicircle at semicircle, at the center of semicircle, when the first half wares and the second half ware connections, two
A semicircle orifice forms a cylindrical hole, which passes through for lower beam；The lower beam is installed on the peripheral wall of support base
For carrying the collar flange of the first half wares, the second half wares, the first half wares, the second half bottom walls of ware and the roof of collar flange are connect
Touching.
Embodiment as a further preference is provided with multiple upper prop holes passed through for pipette in the top tray,
The center line of the upper prop hole is respectively positioned on inside the first half ware or the second half wares；Be provided in the lower tray with it is described
The dropping liquid end of the corresponding lower prop hole in pop-up hole site, lower prop hole and pipette cooperates, for carrying pipette and by pipette
In extraction raffinate leach to liquid accumulating device；There are many pore sizes of the upper prop hole and lower prop hole, to adapt to the liquid relief of different-diameter
The placement of pipe.
Embodiment as a further preference, if the top plate roof and the bottom end of holding court from behind a screen have been uniformly arranged in the circumferential direction
Dry pairs of magnet button, is folded scalable hold court from behind a screen with realizing.
Embodiment as a further preference, the bottom surface of the support base are fixed at least one sucker.
The utility model has the beneficial effects that
The protection of the pipette of the utility model and residual water treatment device, bottom have the liquid accumulating device of separable disassembly, can
It carries out disinfection, clean individually to remove liquid accumulating device；Make top tray relative to lower tray using telescopic rod cooperation locating part
Position is adjustable and can fix, to adapt to the placement of the pipette of different length；Telescopic supporting rod and support base are connected by bearing
Connect, can protective cover it is foldable can convenient for experiment when deposit, withdraw pipette；Earhole of washing on protective cover can be by ear washing bulb and liquid relief
Pipe is put together, and facilitates experimental implementation.Therefore, the utility model has and facilitates, reliably and securely tested, store shifting
The advantages that liquid pipe.
Detailed description of the invention
Fig. 1 is the pipette support frame of the prior art.
Fig. 2 is the protection of pipette and the structural schematic diagram of extraction raffinate processing unit.
Fig. 3 is the structural schematic diagram of liquid accumulating device in Fig. 2.
Fig. 4, which is that the part of telescopic rod in Fig. 2 is perpendicular, cuts open schematic diagram.
Fig. 5 is the cross-sectional schematic diagram of telescopic rod in Fig. 2.
In figure: 1- cup dolly；2- circular base slab；3- frame axis；4- partition；The telescopic support rod of 5-；6- is cylindrical
Protective cover；7- liquid collecting ware；8- circular groove；9- ultraviolet lamp；10- far-infrared heater；11- circular hole；100- support base；On 200-
Pallet；300- lower tray；400- telescopic rod；410- upper boom；420- lower beam；500- liquid accumulating device；The first half ware of 510-；520- second
Half ware；600- protective cover；610- top plate；620- is foldable to hold court from behind a screen；700- positioning pin.
Specific embodiment
Reach the technical means and efficacy that predetermined purpose is taken for the utility model is further described, below in conjunction with attached drawing
And embodiment, to specific embodiment of the present utility model, structure feature and its effect, detailed description are as follows.
Firstly, first briefly introducing the pipette support frame of the prior art for convenient for comparison, number of patent application is
CN201620575393.3.As shown in Figure 1, liquid relief frame include cup dolly 1, it is circular base slab 2, frame axis 3, partition 4, scalable
Support rod 5, cylindrical protective cover 6, be provided with liquid collecting ware 7 above cup dolly 1,1 upper surface of cup dolly is provided with circle
Groove 8, circular groove 8 can be cooperatively connected with cylindrical protective cover 6.
Circular hole 11 is provided on circular base slab 2, circular base slab 2 is located above liquid collecting ware 7 and equal with cup dolly 1
Row, the number that circular base slab 2 is arranged are 2, have frame axis 3 in the middle part of circular base slab 2, circular base slab 2 can surround frame axis 3
Rotation, i.e., have bearing between circular base slab 2 and frame axis 3；Round cushion is provided on 2 surface of circular base slab, circle is slow
Punching pad is equipped with through hole identical with 11 diameter of circular hole on circular base slab 2.
The middle part that 3 lower end of frame axis passes through circular base slab 2 is connect with cup dolly 1, and the upper end of frame axis 3 is connected with scalable
Support rod 5；Partition 4 it is radially arranged around frame axis 3 and by circular base slab 2 be divided into it is several be separated by region, partition two-by-two
The difference formed between 4 is separated by region, inside the 11 diameter difference cylindrical protective cover 6 of circular hole being arranged on circular base slab 2
It is provided with the far-infrared heater 10 of ultraviolet lamp 9 and temperature-adjustable；Telescopic support rod 5 is connect with cylindrical protective cover 6,
So that cylindrical protective cover is turned up by adjusting telescopic support rod 5, so as to more enough storages or pipette of taking.
However, the pipet stand of the above-mentioned prior art at least there are problems that below wait improve.Firstly, in conjunction with Fig. 1 and
Above-mentioned literature record is it is found that partition 4 extends vertically through circular base slab 2 and is fixedly connected with i.e. hydrops ware 7 with liquid collecting ware 7 with branch
Fagging 2 rotates together, while the height of the pipet stand cannot adjust, and can only place the pipette of finite length size, product
Hydrops in liquid ware can not be cleared up, and can only air-dry；
Secondly, circular boot 6 is connect with retractable support lever 5, and circular boot 6 is controlled by telescopic rod 5
Height, in this way in order not to interfere taking and storing for pipette, retractable support lever must be sufficiently high, in practical application
In, need the bottom end of circular boot 6 to be more than or equal to the length of pipette at a distance from the circular base slab 2 for being located at 3 top of frame axis
Degree, which results in the excessive heights of pipet stand, and upper end is excessively heavy, so that pipet stand is very unstable, are easy rollover,
Pipette is easy to be damaged.
Embodiment 1:
The above-mentioned prior art pipet stand there are aiming at the problem that, the utility model provide it is a kind of structurally reasonable, simple,
It is easy to use, stability is high, convenient for the protection and extraction raffinate processing unit of the pipette of cleaning liquid accumulating device 500, including support base
100, top tray 200, lower tray 300, liquid accumulating device 500, telescopic rod 400 and protective cover 600,400 low side of telescopic rod pass through bearing
It is connect with support base 100, i.e., telescopic rod 400 can rotate in the horizontal plane.Telescopic rod 400 includes upper boom 410 and lower beam 420,
Lower beam 420 is empty tubular, and is set on upper boom 410, finite place piece is arranged between upper boom 410 and lower beam 420, to guarantee upper boom
Relative position between 410 and lower beam 420 is adjustable, and without external forces, realizes upper boom 410 relative to lower beam
420 position is constant.
As shown in Fig. 2, lower tray 300 is fixedly connected with lower beam 420, top tray 200 be located at 300 top of lower tray and with it is upper
Bar 410 is fixedly connected.Top tray 200, lower tray 300 can be Nian Jie with the fixed form of telescopic rod 400 in the present embodiment,
It can be screw connection, top tray 200 and upper boom 410 can also be integrally formed, lower tray 300 and lower beam 420 are integrally formed.
Liquid accumulating device 500 includes the first half wares 510 and the second half wares 520, and the first half wares 510 and the second half wares 520 are detachable
Connection；The first half wares 510, the second half wares 520 have a hole wall at semicircle at semicircle, at the center of semicircle, and first
When half ware 510 and the second half wares 520 connect, two semicircle orifices form a cylindrical holes, which passes through for lower beam 420.
It should be noted that the first half wares 510 and the second half wares 520 are an individual support container, in other words, first
Half ware 510, the second half wares 520, can be individually real by semicircle bottom wall and the peripheral wall being fixedly connected with semicircle bottom wall
Now to the collection of extraction raffinate in pipette.
Lower beam 420 is installed with the ring for carrying the first half wares 510, the second half wares 520 on the peripheral wall of support base 100
Shape flange, the first half wares 510, the second half bottom walls of ware 520 are contacted with the roof of collar flange；Collar flange will not only carry
Half ware 510, the second half wares 520 will also be oppositely arranged position on collar flange to the first half wares 510 and the second half wares 520
It sets and is limited, is i.e. the first half wares 510, the second half setting positions of the ware 520 on collar flange are determining；Usual situation
Under, the diameter of collar flange need to be greater than the radius of liquid accumulating device, could preferably realize to the first half wares 510, the second half wares 520
Support.
In actual use, the first magnet, collar flange can be set in the bottom wall of the first half wares 510 and the second half wares 520
Roof be also provided with the second magnet with the first magnet magnetic absorption, liquid accumulating device 500 is detachably connected with collar flange by magnet
It connects and determines that it is oppositely arranged position simultaneously；Certainly, the first half wares 510 and the second half wares 520 can also can using joinery and its construction
Dismantling connection；Alternatively, on the contact surface of the first half wares 510 and the second half wares 520 by the way of snapping connection, the first half wares
510 and the second half the contact surface of ware 520 connection etc. is pasted using magic, as long as to sum up, being able to achieve the first half 510 Hes of ware
The second half relatively-stationary any structures of ware 520, all within the protection scope of the present embodiment.
The extraction raffinate in liquid trap drops onto the junction of the first half wares 510 and the second half wares 520, the present embodiment in order to prevent
The lower prop hole in upper prop hole, lower tray 300 in middle top tray 200 should all avoid clamping position, in other words, each upper prop hole
Center line be respectively positioned on the inside of the first half wares 510 or the second half wares 520；Because of lower prop hole and top tray in lower tray 300
Upper prop hole coaxial arrangement on 200, so when the center line of upper prop hole is located at the first half wares 510 and the second half 520 inside of ware,
The center line of lower prop hole is also necessarily fallen into inside the first half wares 510 or the second half wares 520.
It should be noted that the upper prop hole of the present embodiment, lower prop hole can be made different aperture specifications, it can with realization
The pipette of different pore size is stored, the aperture of the upper prop hole in specific top tray 200 should be slightly larger than the liquid relief in various apertures
The size of the caliber outer wall of pipe, the lower prop hole in lower tray 300 are bellmouth, and the diameter at the big vertebra end of the bellmouth is greater than and moves
The size of the aperture outer wall at liquid pipe dropping liquid end.In use, pipette to be inserted into and be supported on from the upper prop hole of top tray 200
In the lower prop hole of lower tray 300, and the extraction raffinate in pipette is leached by lower prop hole, the extraction raffinate of Li Chu is dropped in the first half wares
510 or the second half in ware 520.
The setting of liquid accumulating device 500 purpose into two is easy for the toppling over and to liquid accumulating device 500 of hydrops in liquid accumulating device 500
Individually cleaning.
In order to guarantee that cleaned pipette is not polluted by overall situation, it is provided with protective cover 600 in the present embodiment, has
Body, protective cover 600 is arranged on 410 top of upper boom, and protective cover 600 includes the top plate 610 being fixedly connected with upper boom 410, top plate
Be provided on 610 side walls be firmly connected with it and extend downwardly it is foldable hold court from behind a screen 620, and it is foldable hold court from behind a screen 620 bottom end edge
It circumferentially is provided with exacerbation ring, to guarantee that foldable hold court from behind a screen 620 can be unfolded, realizes the proofing dust and protecting to pipette people's liquid mouth.Make
For preferred embodiment, several have been uniformly arranged in the circumferential direction in pairs in the roof of top plate 610 and scalable 620 bottom ends of holding court from behind a screen
Magnet button, in order to by scalable 620 foldings of holding court from behind a screen.Meanwhile 2 can be symmetrical arranged on 620 for inserting in foldable hold court from behind a screen
Enter ear washing bulb washes earhole.
As a kind of specific embodiment, as shown in figure 3, the locating part of the present embodiment uses positioning pin 700, the positioning pin
700 include the spring that inside upper boom 410 and one end is fixedly connected with upper boom 410, the pin pearl connecting with the spring other end；
Be uniformly arranged long row's location hole that several are equally spaced along axial direction in lower beam 420, location hole with for positioning pin 700
Pin pearl passes through.Pin pearl is pressed inward against, upper boom 410 can be achieved after spring-compressed relative to the elongation of lower beam 420 or stretch, when pin pearl
After into next location hole, it can be achieved that upper boom 410 and lower beam 420 it is relatively fixed (similar to the structure of spring catch, when stretching
After contracting bar is flexible, spring catch can realize the fixation of telescopic rod with location hole)；When upper boom 410 is pulled up, positioning pin
Location hole is passed through in 700 compartment of terrain, and the axial limiting to upper boom 410 is realized with location hole cooperation.
It is preferred that positioning pin 700 to be arranged in the bottom end of upper boom 410, so that the adjustable range with higher of upper boom 410.
In order to enable positioning pin 700 accurately by location hole, to be arranged in location hole side axially extending along upper boom 410
And the card convex outwardly protruded, lower beam 420 are equipped with the card slot cooperated with card convex, to realize that upper boom 410 and the circumferential of lower beam 420 limit
Position.
As a preferred embodiment, at least one suction is fixedly installed on the bottom surface of the support base 100 of the present embodiment
Disk, to increase the protection of pipette and the stability and safety of extraction raffinate processing unit, meanwhile, in the position of adjustment upper boom 410
The stability of Shi Zengjia support base 100.
The protection of the pipette of the present embodiment and the design concept of extraction raffinate processing unit are based on more human nature, convenience, peace
Entirely, reliably principle carry out.Locating part is cooperated to make top tray 200 relative to the position of lower tray 300 using telescopic rod 400
It is adjustable and can fix, to adapt to the placement of the pipette of different length；For the ease of depositing, withdrawing pipette, by telescopic supporting rod
It is connect with support base 100 by bearing, so in experiment, can stir top tray 200 or lower tray 300 makes it in level
Rotation in surface, the pipette for needs of taking；Pipette is contaminated in order to prevent, while overcoming existing protective cover 600 excessively heavy,
Cause device to be not sufficiently stable, the problem of operating difficulties, protective cover 600 is designed to can to fold, it, can will when testing
Scalable hold court from behind a screen of protective cover 600 620 is folded up, and when not testing, and can be put down, be played to pipette liquid inlet
Proofing dust and protecting.
The protection of the pipette of the present embodiment and the course of work of extraction raffinate processing unit are as follows:
When carrying out the storage of pipette, first foldable 620 foldings and being buckled by magnet of holding court from behind a screen of protective cover 600 are fixed
On top plate 610；When necessary, upper boom 410 is adjusted to suitable position by pushpin pearl；Then by pipette from top tray
It is inserted into 200 upper prop hole, and the dropping liquid end of pipette is carried in lower prop hole accordingly；After the completion of placement, by protective cover
600 foldable hold court from behind a screen 620 is put down, to play the proofing dust and protecting to pipette.Need to topple over extraction raffinate in liquid accumulating device 500 or
Person wants when cleaning to liquid accumulating device 500, the first half wares 510, the second half wares 520 can be taken from collar flange respectively
Under, it is carried on collar flange again after the completion of cleaning.
It, cannot the above content is specific preferred embodiment further detailed description of the utility model is combined
Assert that the specific implementation of the utility model is only limited to these instructions.For the ordinary skill of the utility model technical field
For personnel, without departing from the concept of the premise utility, a number of simple deductions or replacements can also be made, should all regard
To belong to the protection scope of the utility model.
Claims (6)
1. the protection and extraction raffinate processing unit of pipette, including support base (100), top tray (200), lower tray (300), hydrops
Device (500), telescopic rod (400) and protective cover (600), which is characterized in that telescopic rod (400) bottom end passes through bearing and support
Seat (100) connection, the telescopic rod (400) include upper boom (410) and are set on upper boom (410) and connect with base rotation
Finite place piece is arranged between the outer wall of the upper boom (410) and the inner wall of lower beam (420), to realize upper boom in lower beam (420)
(410) adjusting and restriction of position；
The lower tray (300) is fixedly connected with lower beam (420), and the liquid accumulating device (500) is located at below lower tray (300), and
It is detachably connected with lower beam (420)；The top tray (200) is located above lower tray (300), and fixes and connect with upper boom (410)
It connects, the protective cover (600) is arranged on upper boom (410) top；
The protective cover (600) includes the top plate (610) being fixedly connected with upper boom (410), is fixedly connected with top plate (610) side wall
It is foldable hold court from behind a screen (620), foldable hold court from behind a screen is symmetrical arranged 2 on (620) for placing the earholes of washing of ear washing bulb, foldable to hang down
Curtain (620) bottom end is circumferentially arranged exacerbation ring.
2. the protection and extraction raffinate processing unit of pipette according to claim 1, which is characterized in that the locating part is fixed
Position pin (700), the positioning pin (700) setting is in the bottom end of the upper boom (410), and lower beam (420) side wall is along axial uniform
It is provided with long row's location hole that several are equally spaced, location hole with the pin pearl of positioning pin (700) with for passing through；
Be additionally provided with the card convex for axially extending and outwardly protruding on the upper boom (410), the lower beam (420) be equipped with it is described
The card slot of card convex cooperation being recessed inwardly, with the axial limiting for realizing upper boom (410) and lower beam (420) and circumferentially limit.
3. the protection and extraction raffinate processing unit of pipette according to claim 1 or 2, which is characterized in that the liquid accumulating device
(500) include the first half wares (510) and the second half wares (520), the first half wares (510), the second half wares (520) at semicircle,
There is a hole wall at semicircle at the center of semicircle, when the first half wares (510) and the second half wares (520) connect, two semicircles
Hole forms a cylindrical hole, which passes through for lower beam (420)；
The lower beam (420) is installed with for carrying the first half wares (510), the second half wares on the peripheral wall of support base (100)
(520) collar flange, the first half wares (510), the second half wares (520) bottom wall contacted with the roof of collar flange.
4. the protection and extraction raffinate processing unit of pipette according to claim 3, which is characterized in that the top tray
(200) multiple upper prop holes passed through for pipette are provided on, the center line of the upper prop hole is respectively positioned on the first half ware
(510) or the second half wares (520) are internal；
Lower prop hole corresponding with the pop-up hole site, the drop of lower prop hole and pipette are provided on the lower tray (300)
Liquid end cooperation, for carrying pipette and leaching the extraction raffinate in pipette to liquid accumulating device (500)；
There are many pore sizes of the upper prop hole and lower prop hole, to adapt to the placement of the pipette of different-diameter.
5. the protection and extraction raffinate processing unit of pipette according to claim 3, which is characterized in that the top plate (610)
Roof and described (620) bottom end of holding court from behind a screen are uniformly arranged in the circumferential direction several pairs of magnet buttons, are held court from behind a screen with realizing by scalable
(620) it is folded.
6. the protection and extraction raffinate processing unit of pipette according to claim 4, which is characterized in that the support base
(100) bottom surface is fixed at least one sucker.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820148301.2U CN208599790U (en) | 2018-01-29 | 2018-01-29 | The protection and extraction raffinate processing unit of pipette |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820148301.2U CN208599790U (en) | 2018-01-29 | 2018-01-29 | The protection and extraction raffinate processing unit of pipette |
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ID=65659367
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110328000A (en) * | 2019-05-28 | 2019-10-15 | 建湖县智越玻璃仪器有限公司 | A kind of buret and its rack |
| CN111992272A (en) * | 2020-09-04 | 2020-11-27 | 广东医科大学 | Blood sample storage rack with adjustable height and angle |
| CN113583804A (en) * | 2021-07-29 | 2021-11-02 | 南通润迪医疗科技有限公司 | Liquid transfer device for microorganism experiment |
-
2018
- 2018-01-29 CN CN201820148301.2U patent/CN208599790U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110328000A (en) * | 2019-05-28 | 2019-10-15 | 建湖县智越玻璃仪器有限公司 | A kind of buret and its rack |
| CN111992272A (en) * | 2020-09-04 | 2020-11-27 | 广东医科大学 | Blood sample storage rack with adjustable height and angle |
| CN113583804A (en) * | 2021-07-29 | 2021-11-02 | 南通润迪医疗科技有限公司 | Liquid transfer device for microorganism experiment |
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