CN208367024U - The manual injector and water quality many reference amounts detection device of controllable sampling volume - Google Patents
The manual injector and water quality many reference amounts detection device of controllable sampling volume Download PDFInfo
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- CN208367024U CN208367024U CN201820701183.3U CN201820701183U CN208367024U CN 208367024 U CN208367024 U CN 208367024U CN 201820701183 U CN201820701183 U CN 201820701183U CN 208367024 U CN208367024 U CN 208367024U
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- manual injector
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Abstract
The utility model relates to sample injector fields, disclose the manual injector, micro-fluidic chip and water quality many reference amounts detection device of a kind of controllable sampling volume.The manual injector includes sample cell (2), sample cell lid (1) and sample portion (3) out；The sample cell lid (1) seals the sample cell (2) and forms sample cavity, described sample portion (3) out are located at the side opposite with the sample cell lid (1) of the sample cell (2), it can change the volume of the sample cavity by the movement of the sample cell lid (1), and the sample in the sample cavity extruded by going out sample portion (3).The manual injector of the utility model increases the method sample introduction of pressure by manual compression air, pressure change is mildly controllable, the unstable phenomenon of sample introduction caused by fluctuation of pressure is avoided, and avoids the use of external sample introduction equipment, greatly reduces the volume and system complexity of sampling device.
Description
Technical field
The utility model relates to sample injector fields, and in particular to a kind of manual injector of controllable sampling volume, micro-fluidic
Chip and water quality many reference amounts detection device.
Background technique
While world economy and industrial expansion are that the mankind bring huge convenient, but also pollutant is emitted on quantity
It is continuously increased in type, environmental issue is on the rise.Greatly developing all kinds of high-precision analysis instruments and detection technique
Meanwhile the analytical technology of small portable, simple and fast also becomes a big research hotspot, it is numerous because operating to supplement large-scale instrument
It is trivial, maintenance workload is larger, it is high to require laboratory environment, it is difficult to the deficiency for on-site test.
Micro-total analysis system is also known as chip lab, be intended to by laboratory functional one be integrated on a chip
Kind analytical technology, brilliant prospect is shown in terms of the miniaturization of analytical technology, portability, automation, is become in recent years
One big research hotspot.
The process that sample introduces micro-total analysis system has large effect to entire analytic process and result, and micro- at present complete point
The sample introduction of analysis system is carried out typically by means of pressure difference, such as reduces stream using Micropump increase injection end pressure or using centrifugal pump
Enter end pressure, introduces process and often generate fluctuation because pressure difference is larger, and these equipment volumes are much larger than micro-total analysis chip
Volume, thus considerably increase the volume and complexity of micro-total analysis system.
Utility model content
The purpose of this utility model is to overcome the sample injector devices of the prior art it is complicated, volume is big the problems such as, provide
The manual injector and sample injection method of controllable sampling volume and its application, the manual injector are increased by manual compression air
The method sample introduction of big pressure, pressure change is mildly controllable, avoids the unstable phenomenon of sample introduction caused by fluctuation of pressure, and avoid
The use of external sample introduction equipment greatly reduces the volume and system complexity of sampling device.
To achieve the goals above, on the one hand the utility model provides the manual injector of a kind of controllable sampling volume, should
Manual injector includes sample cell, sample cell lid and sample portion out；The sample cell lid seals the sample cell and forms sample cavity, institute
The side opposite with the sample cell lid that sample portion is located at the sample cell is stated out, can be changed by the movement of the sample cell lid
Become the volume of the sample cavity, and the sample in the sample cavity is extruded by going out sample portion.
Preferably, scale is provided on the side wall of the sample cell, the scale is for indicating sample cell lid and the sample
The relative position in product pond.
Preferably, the sample cell lid and the sample cell are detachably connected.
Preferably, the sample cell and the sample cell lid are cylindricality.
Preferably, the sample cell lid is removably screwed on the sample cell.
Preferably, the middle part of the side opposite with the sample cell lid of the sample cell is arranged in the sample portion out.
Preferably, the sample portion out has helicitic texture or flexible seal member；It is highly preferred that the helicitic texture is interior
Helicitic texture or external thread structure；It is highly preferred that the flexible seal member is rubber stopper.
Preferably, the sample portion out includes sample output passage.
Preferably, the sample cell is transparent or semitransparent sample cell, and the sample cell lid is transparent or semitransparent sample
Chi Gai.
Preferably, the bottom of the sample cell is provided with sample processing element.
It is highly preferred that the sample processing element is in sample filtering component, example enrichment component and sample separation unit
It is one or more.
The utility model second aspect provides a kind of micro-fluidic chip, and the micro-fluidic chip has an injection port, it is described into
Helicitic texture is arranged in sample mouth, and the helicitic texture of the helicitic texture and above-mentioned manual injector matches.
The utility model third aspect provides a kind of water quality many reference amounts detection device, which includes
Above-mentioned manual injector.
Preferably, which further includes more than one detection part；The detection part is coloration
In detection part, absorbance detection component, fluorescence signal detection part, Raman signal detection component and infrared spectroscopy detection part
It is one or more.
Preferably, the water quality many reference amounts detection device further include drive chip rotation driving part, signal acquisition component,
One of data processor, data output component and data transfer component are a variety of.Through the above technical solutions, with existing
Technology is compared, 1) manual injector of controllable sampling volume provided by the utility model, which has the following technical effect that, to be manually completed
Sample introduction process avoids volume and complexity that micro-total analysis system is greatly reduced using external equipments such as Micropumps；2) pass through hand
The position change sample introduction pressure of dynamic rotation helicitic texture, keeps pressure change mildly controllable；3) rotatable helicitic texture can have
Fixed position is imitated, prevents pressure increase in chip from making that nut is caused to rise, causes stress influence of fluctuations sample introduction effect；4) manually into
Sample device bottom with helicitic texture access chip, increase handling convenience and both junction air-tightness, effectively prevent into
The generation that sample overflows when sample.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the manual injector loading state of the controllable sampling volume of the utility model；
Fig. 2 is the structural schematic diagram of the manual injector use state of the controllable sampling volume of the utility model；
Fig. 3 is the structural schematic diagram of the micro-fluidic chip of the utility model.
Description of symbols
1, sample cell lid 2, sample cell 3, out sample portion
4, external screw thread 5, injection port 6, the first reaction tank
7, the second reaction tank 8, sample output passage
Specific embodiment
The endpoint of disclosed range and any value are not limited to the accurate range or value herein, these ranges or
Value should be understood as comprising the value close to these ranges or value.For numberical range, between the endpoint value of each range, respectively
It can be combined with each other between the endpoint value of a range and individual point value, and individually between point value and obtain one or more
New numberical range, these numberical ranges should be considered as specific open herein.
In the present invention, in the absence of explanation to the contrary, the noun of locality used such as " upper and lower, left and right " is usual
Refer to the upper and lower, left and right in attached drawing.
The manual injector of controllable sampling volume according to the present utility model, as shown in Figs. 1-2, which includes
Sample cell 2, sample cell lid 1 and sample portion 3 out；The sample cell lid 1 seals the sample cell 2 and forms sample cavity, the sample portion 3 out
Positioned at the side opposite with the sample cell lid 1 of the sample cell 2, institute can change by the movement of the sample cell lid 1
The volume of sample cavity is stated, and the sample in the sample cavity is extruded by going out sample portion 3.
In the present invention, sample cell lid 1 is opened as shown in Figure 1, sample is placed in sample cell, and mobile example pond
Lid 1 can be forced out as shown in Fig. 2, sample is under the effect of the pressure from manual injector, so as to complete sample introduction process.
By the movement appropriate sample cell lid, can achieve the purpose that control sampling volume.The sample portion 3 out can be set to
It protrudes, also can be set inside the sample cell, such as 3 bottom of sample portion is flushed with sample bottom of pond portion out from the sample cell 2.
Specific sampling volume is intuitively determined for convenience, it is preferable that is provided with quarter on the side wall of the sample cell 2
Degree, the scale are used to indicate the relative position of sample cell lid 1 Yu the sample cell 2.That is, the scale indicates the sample
The volume of chamber.Sample cell lid 1 and 2 relative position of sample cell are shown by setting scale, it can be intuitive during sample-adding
Ground judges sample-adding amount, may thereby determine that sampling volume.For more accurate sample introduction, the sample cell 2 and the sample cell lid 1
The sampling volume that size can according to need is selected, so that the scale more accurately shows the sample cell lid 1
Position, that is, selection small cross sections are long-pending when needing less sample volume and the sample cell 2 of more big height.
In the present invention, the amount that the scale can according to need the sample of addition is configured, in order to guarantee to carve
Degree accurately shows the volume of addition sample, and scale can carry out uneven according to the volume of sample and air inside sample cavity
Setting.
According to the utility model, for the ease of being added sample into the manual injector, the sample cell lid 1 with it is described
Sample cell 2 is detachably connected.When needing that sample is added, sample cell lid 1 is opened, as shown in Figure 1, being sealed again after sample is added
Close the sample cell 2.
A preferred embodiment according to the present utility model, for the ease of the movement sample cell lid 1, the sample
Pond 2 and the sample cell lid 1 are cylindricality, are more preferably cylinder.Specifically, the sample cell 2 and the sample cell lid 1
It can be formed as tube-in-tube structure, wherein the sample cell lid 1 can be used as outer cylinder or inner cylinder.It is examined from the angle convenient for sample-adding
Consider, the preferably described sample cell lid 1 is used as outer cylinder, and the sample cell 2 is used as inner cylinder.
In the present invention, there is no particular limitation for the connection type of the sample cell lid 1 and the sample cell 2, example
Sample cell 2 and the sample cell lid 1 are formed as tube-in-tube structure as described in can make, and in inner cylindrical at external screw thread, outer cylinder is formed
There is matching internal screw thread, by above-mentioned helicitic texture the sample cell lid 1 is screwed on the sample cell 2.At this point, can
Change the volume of sample cavity by rotating the sample cell lid 1.By making to state sample cell lid 1 and the sample cell 2 rotation
It connects, the process of rotating sample pool lid 1 can be made to be more easier to control, to be easier accurate control loading process.In sample cell
During 1 precession of lid, sample cell lid 1 can be fixed at an arbitrary position, and even if loosing one's grip, the position of sample cell lid 1 also can
It is blocked by screw thread, without guaranteeing the stabilization of pressure in sample cell, so that the liquid in micro-total analysis chip there is a phenomenon where retracting
Body will not flow back.
In the present invention, soft seal component can also be set on the sample cell lid 1 or the sample cell 2
(such as rubber seal) achievees the purpose that sealing forms sample cavity, at this point it is possible to make sample by sample cell lid 1 described in pull
The volume of product chamber changes, and completes sample introduction process.
According to the utility model, there is no particular limitation for the position that sample portion 3 is arranged described out, is preferably provided at the sample
The middle part of the side opposite with the sample cell lid 1 in pond 2.
According to the utility model, device to be loaded (such as miniflow is fully entered to guarantee sample during sample-adding
Control chip) in, it is preferably tightly connected the sample-adding portion and device to be loaded, specifically, the sample portion 3 out can be made to have
Helicitic texture or flexible seal member, so as to be screwed on or passed through sealing by the sample-adding portion and device to be loaded
Part seals the interface section.
Above-mentioned helicitic texture can be internal thread structure or external thread structure, as long as being with device sealed connection to be loaded
It can.The flexible seal member can be rubber stopper etc., can specifically use sample portion and be arranged inside the rubber stopper, complete close
Envelope connection makes the injection port that device to be loaded is sealed by rubber stopper.
A preferred embodiment according to the present utility model, the sample portion 3 out includes sample output passage 8, the sample out
Channel 8 connects the sample export end of the sample cell and the sample portion 3 out.The sample output passage 8 is preferably arranged to tubulose, more excellent
It is selected as transparent tubulose.By the way that sample output passage 8 is arranged, sample feeding situation can be more easily observed.
According to the utility model, for the ease of observing the sample introduction situation of sample, the sample cell 2 is transparent or semitransparent sample
Product pond, the sample cell lid 1 are transparent or semitransparent sample cell lid.As the sample cell 2 and the sample cell 1 material
Matter, such as one of glass, polypropylene, quartz, polymethyl acrylate and polystyrene or a variety of can be selected from.Wherein preferably
For glass, polymethyl acrylate or polypropylene.By setting transparent or semitransparent for sample cell lid 1 and sample cell 2, Neng Gousui
When observation grasp sample cell in liquids and gases state, convenient for control sample-adding process.
It for the ease of the processing of sample, can be pre-processed during sample introduction, such as the bottom for stating sample cell 2 can be made
Portion is provided with sample processing element.Preferably, the sample processing element is sample filtering component, example enrichment component and sample
One of separation unit is a variety of, is specifically as follows one of filter disc, functional resin, silica gel and aluminium oxide or a variety of.Make
It can be hydrophobicity filter disc, such as polypropylene fibre, glass fibre, active carbon, gravel etc. for the filter disc.As the function
Resin, such as cation exchange resin, 18 alkyl silica gel etc..The setting quantity and set-up mode of above-mentioned sample processing element do not have
Have special restriction, can be one or more, and can according to need that the setting between each sample processing component needs every
The segmenting structures such as plate, to guarantee successively to carry out variety of processes.It, can be in sample introduction mistake by the way that above-mentioned sample processing element is arranged
The pretreatment that sample is carried out while journey, easily facilitates the progress of sample introduction and subsequent reactions.
The utility model second aspect provides a kind of micro-fluidic chip, and the micro-fluidic chip has an injection port 5, it is described into
Helicitic texture is arranged in sample mouth 5, and the helicitic texture of the helicitic texture and above-mentioned manual injector matches.The utility model it is micro-
Fluidic chip can be used cooperatively with the manual injector of above-mentioned controllable sampling volume, be arranged during sample introduction in manual injector
Helicitic texture be screwed on the helicitic texture on the injection port 5 that micro-fluidic chip is arranged in, be tightly connected, prevent to both realize
The only pressure influence sampling volume during sample introduction inside micro-fluidic chip.
In the present invention, there is no particular limitation for the structure of the micro-fluidic chip, preferably has reaction tank, and can
With structures such as runners.The quantity of the reaction tank can be arranged according to quantity, can be more than one, such as 1-10,
Preferably 1-2.The structure of the runner is configured according to the needs of reaction.
A preferred embodiment according to the present utility model, such as micro-fluidic chip shown in Fig. 3, with sample introduction
The 5, first reaction tank 6 of mouth and the second reaction tank 7, and between the injection port 5 and first reaction tank 6, described first
Be provided with runner between reaction tank 6 and second reaction tank 7, be provided with internal screw thread at the injection port 5, so as to go out
There is the mutual cooperation of externally threaded hand sampling device to carry out sample introduction in sample portion.
The manual injector of the utility model can use the hand sampling method of following controllable sampling volumes, this method packet
Include: the sample cell lid 1 of mobile above-mentioned manual injector extrudes the sample in the sample cavity by going out sample portion 3.Described in movement
The mode of sample cell lid 1 can be rotation or pull etc., be carried out according to the structure of the manual injector.Pass through movement
The sample cell lid 1 can be arranged from manual injector under the effect of the pressure with the volume-diminished of sample cavity, sample therein
Out, to complete sample introduction process.
According to the utility model, the preferably described sample cell lid 1 is screwed on the sample cell 2, and the mobile sample cell lid 1 is logical
It crosses and rotates the progress of sample cell lid 1.As above-mentioned, the process for rotating the sample cell lid 1 can be accurately controlled, so as to
More accurately control injection volume.In order to guarantee the sealing between sample cell lid 1 and sample cell 2, such as can be in sample cell
The threaded portion that lid 1 and sample cell 2 are screwed on carries out frosted processing.
A preferred embodiment according to the present utility model, this method comprises: by the way that the sample cell 2 is arranged in
Scale on side wall determines the volume by the sample that sample portion 3 extrudes described out.Sample volume during sample introduction can be described in
Scale is directly read, thus the sample of volume needed for being more accurately loaded.
A preferred embodiment according to the present utility model, this method comprises: by the manual injector with it is above-mentioned
Micro-fluidic chip be screwed on, so that sample in the manual injector is entered the micro-fluidic chip.By by manual injector
It is screwed on micro-fluidic chip, sample introduction process can be made more accurate and reliable.
The above-mentioned manual injector, micro-fluidic chip or hand sampling method of the utility model can be in environmental pollution quality testings
It is applied in the fields such as survey, in-vitro diagnosis, micro-total analysis chip.
The utility model also provides a kind of water quality many reference amounts detection device, which includes above-mentioned
Manual injector.
In the present invention, which can also include more than one detection part.
According to the utility model, there is no particular limitation for the detection part, can be used for the various detections of chip detection
Component, such as the detection part can be chromaticity sensing section, absorbance detection component, fluorescence signal detection part, Raman
One of signal detecting part and infrared spectroscopy detection part are a variety of.It is wherein preferably absorbance detection component and/or glimmering
Photodetector.
For the ease of the progress of detection, the chip can be fixed on the inspection of water quality many reference amounts in order to any way of detection
In measurement equipment, such as it can fix, rotatable or slidable mode.
A preferred embodiment according to the present utility model, the detection part is by light source, branch optical fiber and spectrum
Equipment is constituted.The light source is used for while detecting multiple anti-for generating the light for carrying out testing required wavelength, the branch optical fiber
Optical signalling in Ying Chi, the spectroscopy equipment are used to collect optical signal generating or after absorbing.When needs are to different positions
When the reaction tank set is detected, the incident light that the branch optical fiber can will test is divided into multichannel, so that detection be rapidly completed.
According to the utility model, in order to realize that function is integrated, which can also include driving core
One of driving part, signal acquisition component, data processor, data output component and the data communication component of piece rotation
Or it is a variety of.A kind of preferred embodiment as the water quality many reference amounts detection device comprising data processor, data output
Component, data transfer component.As the data processor, the center including controller, arithmetic unit and register can be
Processor etc.；It may include having the display screen, touch screen, voice of images outputting function defeated as the data output component
Out etc.；As the data transfer component, initial data can be uploaded to remote server and remotely be handled, then by result
Designated terminal is returned directly to, data processor can also be generated to treated information remote transmitting to cloud and carry out information receipts
Collection.
The utility model will be described in detail by embodiment below.
Embodiment 1
The present embodiment is used to illustrate the sample injection of known volume.
Using the manual injector of controllable sampling volume as shown in Figs. 1-2, which includes sample cell 2, sample
Product pond lid 1 and out sample portion 3；The sample cell lid 1 is cylindrical, transparent glass material with the sample cell 2, and detachable
Ground be screwed on to be formed tube-in-tube structure to sealing formed volume be 100 μ L sample cavity, out sample portion 3 be located at the sample cell 2 with
The opposite side of the sample cell lid 1 can change the volume of the sample cavity by the movement of the sample cell lid 1, and will
Sample in the sample cavity is extruded by going out sample portion 3, and sample portion 3 includes straight tube-like sample output passage 8, the connection of sample output passage one end out
Sample cell, the other end are provided with external screw thread as outlet, and at the sample export end of outlet.It is set on the side wall of sample cell 2
It is equipped with 0~5 scale.
Using the micro-fluidic chip as shown in Figure 3 matched with above-mentioned manual injector, the micro-fluidic chip have into
Sample mouth 5, the first reaction tank 6 and the second reaction tank 7, and between the injection port 5 and first reaction tank 6, described
Be provided with runner between one reaction tank 6 and second reaction tank 7, be provided with internal screw thread at injection port 5, so as to sample out
The externally threaded mutual cooperation in portion 3 carries out sample introduction.
Before carry out process starts, it is first added the sample of 65 μ L in manual injector, then with 1 sealed sample pond of sample cell lid
2.Then the internal screw thread at the injection port 5 of the external screw thread and micro-fluidic chip in sample portion 3 out is screwed on, makes manual injector and miniflow
Chip connection is controlled, rotating sample pool lid 1 moves down sample cell lid 1, and sample cavity volume reduces, pressure increases, and sample is in the pressure
Effect is lower to fully enter micro-fluidic chip by sample output passage 8, can be just full of 6 He of the first reaction tank in micro-fluidic chip
Second reaction tank 7.During sample introduction, the stream of internal liquid is able to observe that by sample cell 2, sample cell lid 1 and sample output passage 8
Emotionally condition.
During sample cell 1 precession of lid, regardless of which position sample cell lid 1 reaches, it can suspend or stop at any time
Only sample introduction process, even if loosing one's grip, the position of sample cell lid can also be blocked by helicitic texture, without protecting there is a phenomenon where retracting
The stabilization for demonstrate,proving pressure in sample cell, so that the liquid stabilising in micro-fluidic chip, will not flow back.
Embodiment 2
The present embodiment is used to illustrate the sample injection of unknown volume.
Use manual injector and micro-fluidic chip same as Example 1.
Before carry out process starts, first it is added sample in manual injector, then with 1 sealed sample pond 2 of sample cell lid, and makes
Sample cell lid lower end is overlapped with 0 graduation mark of sample cell.Then by the injection port 5 of the external screw thread and micro-fluidic chip in sample portion 3 out
The internal screw thread at place is screwed on, and connect manual injector with micro-fluidic chip, and rotating sample pool lid 1 moves down sample cell lid 1, sample
Chamber volume reduces, pressure increases, and sample enters micro-fluidic chip by sample output passage 8 under pressure effect, sees in sample introduction
The reading for examining scale stops sample introduction when sample cell lid is overlapped with the scale 2 of sample cell, so as to add into micro-fluidic chip
Enter the sample of 65 μ L.During sample introduction, internal liquid is able to observe that by sample cell 2, sample cell lid 1 and sample output passage 8
Mobility status.
During sample cell 1 precession of lid, regardless of which position sample cell lid 1 reaches, it can suspend or stop at any time
Only sample introduction process, even if loosing one's grip, the position of sample cell lid can also be blocked by helicitic texture, without protecting there is a phenomenon where retracting
The stabilization for demonstrate,proving pressure in sample cell, so that the liquid stabilising in micro-fluidic chip, will not flow back.
Preferred embodiments of the present invention are described in detail above, still, the utility model is not limited to this.At this
In the range of the technology design of utility model, a variety of simple variants can be carried out to the technical solution of the utility model, including each
Technical characteristic is combined with any other suitable method, these simple variants and combination equally should be considered as the utility model
Disclosure of that belongs to the protection scope of the utility model.
Claims (11)
1. a kind of manual injector of controllable sampling volume, which is characterized in that the manual injector includes sample cell (2), sample
Chi Gai (1) and out sample portion (3)；
The sample cell lid (1) seals the sample cell (2) and forms sample cavity, and described sample portion (3) out are located at the sample cell (2)
The side opposite with the sample cell lid (1), can change the appearance of the sample cavity by the movement of the sample cell lid (1)
Product, and the sample in the sample cavity is extruded by going out sample portion (3).
2. manual injector according to claim 1, which is characterized in that be provided with quarter on the side wall of the sample cell (2)
Degree, the scale are used to indicate the relative position of sample cell lid (1) Yu the sample cell (2).
3. manual injector according to claim 1, which is characterized in that the sample cell lid (1) and the sample cell (2)
Removably it is screwed on.
4. manual injector according to claim 1, which is characterized in that described sample portion (3) out are arranged in the sample cell
(2) middle part of the side opposite with the sample cell lid (1).
5. manual injector according to claim 1, which is characterized in that described sample portion (3) out have helicitic texture or soft
Property seal member.
6. manual injector according to claim 1, which is characterized in that sample portion (3) out include sample output passage (8).
7. manual injector described in any one of -6 according to claim 1, which is characterized in that the sample cell (2) is
Bright or translucent sample pond, the sample cell lid (1) are transparent or semitransparent sample cell lid.
8. manual injector described in any one of -6 according to claim 1, which is characterized in that the bottom of the sample cell (2)
Portion is provided with sample processing element；
The sample processing element is one of sample filtering component, example enrichment component and sample separation unit or a variety of.
9. a kind of water quality many reference amounts detection device, which is characterized in that the water quality many reference amounts detection device includes in claim 1-8
Manual injector described in any one.
10. water quality many reference amounts detection device according to claim 9, which is characterized in that the water quality many reference amounts detection device
It further include more than one detection part；
The detection part is chromaticity sensing section, absorbance detection component, fluorescence signal detection part, Raman signal detection portion
One of part and infrared spectroscopy detection part are a variety of.
11. water quality many reference amounts detection device according to claim 9 or 10, which is characterized in that water quality many reference amounts detection
Equipment further includes driving driving part, signal acquisition component, data processor, data output component and the data of chip rotation
One of transmission part is a variety of.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110470856A (en) * | 2018-05-11 | 2019-11-19 | 中国石油化工股份有限公司 | The manual injector and sample injection method of controllable sampling volume and its application |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110470856A (en) * | 2018-05-11 | 2019-11-19 | 中国石油化工股份有限公司 | The manual injector and sample injection method of controllable sampling volume and its application |
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Effective date of registration: 20221118 Address after: Yanan City, Shandong province Qingdao City three road 266071 No. 218 Patentee after: CHINA PETROLEUM & CHEMICAL Corp. Patentee after: Sinopec Safety Engineering Research Institute Co.,Ltd. Address before: Yanan City, Shandong province Qingdao City three road 266071 No. 218 Patentee before: CHINA PETROLEUM & CHEMICAL Corp. Patentee before: SINOPEC Research Institute OF SAFETY ENGINEERING |
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