CN217717639U - Automatic sample introduction device of chromatograph - Google Patents

Automatic sample introduction device of chromatograph Download PDF

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Publication number
CN217717639U
CN217717639U CN202221910046.3U CN202221910046U CN217717639U CN 217717639 U CN217717639 U CN 217717639U CN 202221910046 U CN202221910046 U CN 202221910046U CN 217717639 U CN217717639 U CN 217717639U
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CN
China
Prior art keywords
chromatograph
butt joint
baffle
plate
groove
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CN202221910046.3U
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Chinese (zh)
Inventor
王建成
郭洪武
王灵
李占华
张明月
李天昊
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Chifeng Power Supply Co Of State Grid East Inner Mongolia Electric Power Co ltd
State Grid Corp of China SGCC
Original Assignee
Chifeng Power Supply Co Of State Grid East Inner Mongolia Electric Power Co ltd
State Grid Corp of China SGCC
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Application filed by Chifeng Power Supply Co Of State Grid East Inner Mongolia Electric Power Co ltd, State Grid Corp of China SGCC filed Critical Chifeng Power Supply Co Of State Grid East Inner Mongolia Electric Power Co ltd
Priority to CN202221910046.3U priority Critical patent/CN217717639U/en
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    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N30/00Investigating or analysing materials by separation into components using adsorption, absorption or similar phenomena or using ion-exchange, e.g. chromatography or field flow fractionation
    • G01N30/02Column chromatography
    • G01N30/04Preparation or injection of sample to be analysed
    • G01N30/24Automatic injection systems
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N30/00Investigating or analysing materials by separation into components using adsorption, absorption or similar phenomena or using ion-exchange, e.g. chromatography or field flow fractionation
    • G01N30/02Column chromatography
    • G01N30/04Preparation or injection of sample to be analysed
    • G01N30/16Injection
    • G01N30/20Injection using a sampling valve

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  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Sampling And Sample Adjustment (AREA)

Abstract

The utility model discloses a chromatograph autoinjection device, include: a chromatograph automatic sample injector and a microcomputer control unit; the front part of the chromatograph automatic sample injector is connected with a microcomputer control unit, and one side of the chromatograph automatic sample injector is embedded with a power supply interface; the butt joint plate is connected to the top end of the output shaft, and the butt joint plate is clamped and connected in the butt joint groove. Through going into after butt joint inslot portion with the butt joint board card, and under the effect of spring, insert the picture peg and insert the intracavity, can fix the carousel at the output shaft tip, and then be convenient for install the carousel, can, and then guarantee that the ration is accurate, drive the shrouding through the torsional spring and reset, can make sealed frame cover anterior at power supply interface, and then when not using, can seal power supply interface, prevent inside accumulated dust, lead to contact failure, unable normal work, inside the lug card through with annular section of thick bamboo inner wall goes into the draw-in groove, can install the communicating pipe one end in the butt joint pipe, and then be convenient for dock the communicating pipe.

Description

Automatic sample introduction device of chromatograph
Technical Field
The utility model relates to a chromatograph autoinjection technical field specifically is a chromatograph autoinjection device.
Background
In chromatographic experimental analysis, the device capable of quantitatively feeding a sample into a chromatographic column is called a sample injector. The sample injector is divided into an artificial manual sample injector and an automatic sample injector, the automatic sample injector is an intelligent and automatic sample injector, and the automatic sample injection process can be completed only by setting sample injection parameters and placing a sample to be detected, so that the existing chromatograph automatic sample injector has certain defects when in use, such as the above;
because the turntable needs to be matched with the stepping motor to rotate at intervals, and the output shaft of the stepping motor is generally fixedly installed by matching a plurality of groups of bolts and nuts, the installation process is complicated, and the disassembly is difficult;
there is a need for improvement in view of the above problems.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a chromatograph autoinjection device to solve on the existing market that above-mentioned background art provided because the carousel need cooperate step motor to carry out the interval rotatory, and step motor's output shaft generally carries out fixed mounting with the nut cooperation through the multiunit bolt, and the installation is comparatively loaded down with trivial details, and also comparatively difficult problem when dismantling.
In order to achieve the above purpose, the utility model provides a following technical scheme: an automatic sample introduction device for a chromatograph includes: the chromatograph automatic sample injector and the microcomputer control unit;
the automatic chromatograph sampler is characterized in that the front part of the automatic chromatograph sampler is connected with a microcomputer control unit, the automatic chromatograph sampler serves as a bearing foundation, a stepping motor is arranged below the microcomputer control unit, an output shaft is connected above the stepping motor, the top end of the output shaft is provided with a turntable, the front part of the automatic chromatograph sampler is connected with a degassing chamber, one side of the degassing chamber is connected with a temperature controller, the bottom of the degassing chamber is embedded with an injection needle, one side of the degassing chamber is embedded with a butt joint pipe, the butt joint pipe is connected with a communicating pipe, and one side of the automatic chromatograph sampler is embedded with a power supply interface;
the butt joint plate is connected on the top end of the output shaft, the butt joint plate is clamped and connected in the butt joint groove, the butt joint groove is formed in the bottom of the rotary table, a groove is formed in the butt joint plate, a partition plate is connected in the groove, one side of the partition plate is connected with an L-shaped rod, the L-shaped rod is connected in a guide hole in a penetrating mode, the guide hole is formed in the baffle, and the baffle is arranged in the groove.
Preferably, one side of the baffle is connected with an inserting plate, one end of the inserting plate is connected in an inserting cavity in a clamping manner, and the inserting cavity is formed in the inner side wall of the butt joint groove;
and one end of the spring is connected to the other side of the baffle, and one end of the spring is connected to one side of the partition plate.
Preferably, the type of the internal processor of the microcomputer control unit is condex-M4.
Preferably, the distance between the inner part of the inserting cavity and one side of the partition plate is larger than the sum of the lengths of the baffle plate, the inserting plate and the spring.
Preferably, one side of the automatic sample injector of the chromatograph is connected with a U-shaped frame, the inner side wall of the U-shaped frame is connected with a bearing, a rotating shaft is connected in the bearing, and one end of the rotating shaft is connected with a sealing plate;
and one end of the torsion spring is connected above the bearing, and the other end of the torsion spring is connected on the rotating shaft.
Preferably, be connected with the sealed frame on the shrouding, shrouding one end is connected with first magic subsides, first magic is pasted the back and is connected with second magic subsides, second magic is pasted and is connected in chromatograph autosampler one side.
Preferably, the bearings, the rotating shaft and the torsion springs are symmetrically arranged in two groups about the central axis of the sealing plate, and the two groups of bearings, the rotating shaft, the torsion springs and the sealing plate form a rotary reset structure.
Preferably, one end of the communicating pipe is connected with an annular cylinder in an embedded manner, a sealing ring is connected in the annular cylinder, and the sealing ring is connected in the butt-joint pipe in a clamping manner;
and the clamping groove is formed in the outer peripheral surface of the butt joint pipe, and a lug is connected in the clamping groove in a clamping manner.
Compared with the prior art, the beneficial effects of the utility model are that: through going into butt joint inslot portion with the butt joint board card after, and under the effect of spring, insert the picture peg and insert the intracavity, can fix the carousel at the output shaft tip, and then be convenient for install the carousel, can, and then guarantee that the ration is accurate, drive the shrouding through the torsional spring and reset, can make sealed frame cover anterior at power supply interface, and then when not using, can seal power supply interface, prevent inside accumulated dust, lead to contact failure, unable normal work, inside the lug card through with annular section of thick bamboo inner wall goes into the draw-in groove, can install communicating pipe one end in the butt joint pipe, and then be convenient for dock communicating pipe, concrete content is as follows:
1. firstly, pushing a baffle plate along a groove, compressing a spring, and then taking an inserting plate into an inserting cavity, then clamping a butt joint plate at the top end of an output shaft into a butt joint groove, after the butt joint plate is completely clamped into the butt joint groove, loosening the baffle plate, rapidly resetting the baffle plate under the action of the spring to drive the inserting plate to be clamped into the inserting cavity, and further fixing the butt joint plate in the butt joint groove, so that a rotary table is installed on the output shaft, and when the rotating table needs to be disassembled, pushing the baffle plate again to separate the inserting plate from the inserting cavity;
2. after the power supply plug is used, the power supply plug is pulled out, the first magic tape and the second magic tape are torn, the sealing plate is loosened, and the sealing frame is driven to be clamped at the front end of the power supply interface to seal the power supply interface due to the fact that the front torsion spring is in a twisted state, and the sealing plate is automatically reset under the action of the torsion spring after being loosened, so that the power supply interface is prevented from being poor in contact with the power supply plug due to the fact that dust is accumulated in the interior when the power supply plug is not used, and the power supply plug cannot normally work;
3. one end of the communicating pipe is inserted into the butt-joint pipe, the sealing ring is clamped into a gap between the outer peripheral surface of the communicating pipe and the inner peripheral surface of the butt-joint pipe while the communicating pipe is inserted, the gap between the communicating pipe and the butt-joint pipe is sealed, meanwhile, the lug is extruded to generate plastic deformation, after one end of the communicating pipe is completely inserted into the butt-joint pipe, the lug corresponds to the clamping groove, the lug quickly returns to the original installation and is clamped into the clamping groove, and then the communicating pipe is installed in the butt-joint pipe, so that the communicating pipe is conveniently butted and is connected to one side of a degassing chamber.
Drawings
FIG. 1 is a schematic structural view of the present invention;
fig. 2 is a schematic diagram of the structure of the power supply interface of the present invention;
FIG. 3 is a schematic view of the structure of the butt-joint groove of the present invention;
FIG. 4 is an enlarged view of the part A structure of the present invention;
fig. 5 is an enlarged view of the structure of part B of the present invention.
In the figure: 1. an automatic sample injector of a chromatograph; 2. a microcomputer control unit; 3. a stepping motor; 4. an output shaft; 5. a turntable; 6. a degassing chamber; 7. a temperature controller; 8. an injection needle; 9. a communicating pipe; 10. a power supply interface; 11. a butt plate; 12. a butt joint groove; 13. a groove; 14. a partition plate; 15. an L-shaped rod; 16. a guide hole; 17. a baffle plate; 18. inserting plates; 19. inserting a cavity; 20. a spring; 21. a U-shaped frame; 22. a bearing; 23. A rotating shaft; 24. closing plates; 25. a torsion spring; 26. a sealing frame; 27. a first magic tape; 28. a second magic tape; 29. an annular cylinder; 30. a seal ring; 31. butt-joint pipes; 32. a card slot; 33. and (4) a bump.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Referring to fig. 1-5, the present invention provides a technical solution: an automatic sample introduction device for a chromatograph includes: a chromatograph automatic sample injector 1 and a microcomputer control unit 2;
the front part of the chromatograph automatic sample injector 1 is connected with a microcomputer control unit 2, the chromatograph automatic sample injector 1 is used as a bearing foundation, a stepping motor 3 is arranged below the microcomputer control unit 2, an output shaft 4 is connected above the stepping motor 3, a rotary table 5 is arranged at the top end of the output shaft 4, a degassing chamber 6 is connected at the front part of the chromatograph automatic sample injector 1, a temperature controller 7 is connected at one side of the degassing chamber 6, an injection needle 8 is embedded at the bottom of the degassing chamber 6, a butt joint pipe 31 is embedded at one side of the degassing chamber 6, a communicating pipe 9 is connected in the butt joint pipe 31, a power supply interface 10 is embedded at one side of the chromatograph automatic sample injector 1, a butt joint plate 11 is connected at the top end of the output shaft 4, the butt joint plate 11 is connected in the butt joint groove 12 in a clamping manner, the butt joint groove 12 is arranged at the bottom of the rotary table 5, a groove 13 is arranged on the butt joint plate 11, a partition plate 14 is connected with an L-shaped rod 15, the L-shaped rod 15 is penetratingly connected in a guide hole 16, the guide hole 16 is arranged in a baffle 17, and the baffle 17 is arranged in the groove 13.
One side of the baffle 17 is connected with an inserting plate 18, one end of the inserting plate 18 is connected in an inserting cavity 19 in a clamping mode, the inserting cavity 19 is formed in the inner side wall of the butt joint groove 12, one end of a spring 20 is connected to the other side of the baffle 17, and one end of the spring 20 is connected to one side of the partition plate 14. The type of an internal processor of the microcomputer control unit 2 is cotex-M4, and a perfect intelligent flow processing algorithm is matched, so that good interaction performance of the system and intelligence and reliability of work are realized. The distance between the interior of the inserting cavity 19 and one side of the partition plate 14 is larger than the sum of the lengths of the baffle plate 17, the inserting plate 18 and the spring 20, so that the inserting plate 18 can be firmly clamped into the inserting cavity 19, the butt joint plate 11 is clamped into the butt joint groove 12, the inserting plate 18 is inserted into the inserting cavity 19 under the action of the spring 20, the rotary table 5 can be fixed at the end part of the output shaft 4, and the rotary table 5 can be conveniently installed.
One side of the chromatograph automatic sample injector 1 is connected with a U-shaped frame 21, the inner side wall of the U-shaped frame 21 is connected with a bearing 22, a rotating shaft 23 is connected in the bearing 22, one end of the rotating shaft 23 is connected with a sealing plate 24, one end of a torsion spring 25 is connected above the bearing 22, and the other end of the torsion spring 25 is connected on the rotating shaft 23. Be connected with sealed frame 26 on the shrouding 24, 24 one end of shrouding is connected with first magic and pastes 27, and first magic is pasted 27 backs and is connected with second magic and pastes 28, and second magic is pasted 28 and is connected in 1 one side of chromatograph autosampler, pastes 27 and pastes 28 adhesions with the second magic through first magic, and the position of fixed shrouding 24 prevents that shrouding 24 from causing the hindrance to power supply interface 10's normal use. Bearing 22, pivot 23 and torsional spring 25 are provided with two sets about shrouding 24's the central axis symmetry, and two sets of bearings 22, pivot 23 and torsional spring 25 constitute rotatory reset structure with shrouding 24, through two sets of bearings 22, pivot 23 and torsional spring 25, can make shrouding 24 after rotatory, can reset by oneself, drive shrouding 24 through torsional spring 25 and reset, can make sealed frame 26 cover anterior at power supply interface 10, and then when not using, can seal power supply interface 10, prevent inside dust is collected up.
The one end of closed tube 9 is set in the embedding and is connected with an annular section of thick bamboo 29, and an annular section of thick bamboo 29 in-connection has a sealing washer 30, and the clamping connection of sealing washer 30 is in butt joint pipe 31, and draw-in groove 32 is seted up on the 31 outer peripheral faces of butt joint pipe, and the clamping connection has lug 33 in the draw-in groove 32, and inside lug 33 card through with an annular section of thick bamboo 29 inner wall goes into draw-in groove 32, can install closed tube 9 one end in butt joint pipe 31, and then be convenient for butt joint closed tube 9.
The working principle is as follows: as shown in fig. 1 to 5, when using the automatic sample feeding device for chromatograph, the device is simply understood, first, one end of the communicating tube 9 is inserted into the abutting tube 31, the sealing ring 30 is inserted into the gap between the outer circumferential surface of the communicating tube 9 and the inner circumferential surface of the abutting tube 31 while sealing the gap between the communicating tube 9 and the abutting tube 31, the projection 33 is pressed to be plastically deformed, after one end of the communicating tube 9 is completely inserted into the abutting tube 31, the projection 33 corresponds to the position of the locking groove 32, the projection 33 is quickly restored to be locked into the locking groove 32, and the communicating tube 9 is installed in the abutting tube 31, thereby facilitating the abutting of the communicating tube 9, connecting the communicating tube 9 to the degassing chamber 6, and then, the four groups of baffles 17 are pushed along the two groups of grooves 13, the four groups of baffles 17 move along the L-shaped rod 15 through the respective guiding holes 16, the spring 20 is compressed, the plug board 18 is accommodated in the plug cavity 19, then the butt board 11 at the top end of the output shaft 4 is clamped in the butt joint groove 12, after the butt joint board 11 is completely clamped in the butt joint groove 12, the baffle 17 is loosened, the baffle 17 is quickly reset under the action of the spring 20 to drive the plug board 18 to be clamped in the plug cavity 19, the butt joint board 11 is further fixed in the butt joint groove 12, the rotating disc 5 is installed on the output shaft 4, when the disassembly is needed, the baffle 17 is pushed again to separate the plug board 18 from the plug cavity 19, finally, before the use, a power supply plug is inserted into the power supply interface 10, the automatic sampling device is operated through an intelligent flow processing algorithm matched and completed by the microcomputer control unit 2, in order to ensure the stability of degassing efficiency, a high-precision temperature control unit based on surrounding heating is introduced into the degassing chamber 6, the temperature in the degassing chamber 6 is controlled by the temperature controller 7, the temperature control precision is 0.1 ℃, the oil circuit part adopts a switching sample injection valve with the dead volume of only 5uL, the gas sample injection part adopts an electric plane six-way valve, the cross interference is small, the switching is rapid, and the sample injection speed and the simplicity degree of a cleaning gas circuit are ensured. After switching the appearance of advancing, can resume initial value fast, so as to get into next detection cycle, and inside oil circuit adopts dual level sensor and metallized oil gas separation membrane, avoided insulating oil sample to get into the sampling system, cause the pollution to the system, during the injection, step motor 3 drives 5 interval rotations of carousel, cooperation syringe needle 8's injection frequency, and then guaranteed quantitative accurate degree, optimized the liquid injection of appearance simultaneously, after using the completion, pull out power supply plug, tear first magic subsides 27 and second magic subsides 28, and unclamp shrouding 24, because preceding torsional spring 25 is in the state of being twisted, after unclamp 24, under the effect of torsional spring 25, shrouding 24 resets by oneself, and drive seal frame 26 card in power supply interface 10 front end, seal power supply interface 10, when preventing not using, inside collection dust, lead to power supply interface 10 and power supply plug contact failure, can't normally work, the content that does not make detailed description belongs to the prior art that technical personnel are known in the field is known.
Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments or portions of the features of the embodiments described above, and any modifications, equivalent substitutions, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims (8)

1. Chromatograph autoinjection device includes: a chromatograph autosampler (1) and a microcomputer control unit (2), characterized in that;
the automatic chromatograph sampler is characterized in that a microcomputer control unit (2) is connected to the front portion of the automatic chromatograph sampler (1), a stepping motor (3) is arranged below the microcomputer control unit (2), an output shaft (4) is connected to the upper portion of the stepping motor (3), a rotary disc (5) is arranged at the top end of the output shaft (4), a degassing chamber (6) is connected to the front portion of the automatic chromatograph sampler (1), a temperature controller (7) is connected to one side of the degassing chamber (6), an injection needle (8) is embedded in the bottom of the degassing chamber (6), a butt joint pipe (31) is embedded in one side of the degassing chamber (6), a connecting pipe (9) is connected to the butt joint pipe (31), and a power supply interface (10) is embedded in one side of the automatic chromatograph sampler (1);
butt joint board (11), connect output shaft (4) top, butt joint board (11) block is connected in butt joint groove (12), set up in carousel (5) bottom butt joint groove (12), set up on butt joint board (11) recess (13), recess (13) in-connection has baffle (14), baffle (14) one side is connected with L type pole (15), L type pole (15) through connection is in guiding hole (16), guiding hole (16) are set up in baffle (17), baffle (17) set up in recess (13).
2. The chromatograph autoinjection device of claim 1, wherein: one side of the baffle (17) is connected with an inserting plate (18), one end of the inserting plate (18) is connected into an inserting cavity (19) in a clamping mode, and the inserting cavity (19) is formed in the inner side wall of the butt joint groove (12);
and one end of the spring (20) is connected to the other side of the baffle (17), and one end of the spring (20) is connected to one side of the partition plate (14).
3. The chromatograph autoinjection device of claim 1, wherein: the type of an internal processor of the microcomputer control unit (2) is condex-M4.
4. The chromatograph autoinjection device of claim 2, wherein: the distance between the interior of the inserting cavity (19) and one side of the partition plate (14) is larger than the sum of the lengths of the baffle plate (17), the inserting plate (18) and the spring (20).
5. The automatic sample introduction device for chromatograph according to claim 1, wherein: one side of the chromatograph automatic sample injector (1) is connected with a U-shaped frame (21), the inner side wall of the U-shaped frame (21) is connected with a bearing (22), a rotating shaft (23) is connected in the bearing (22), and one end of the rotating shaft (23) is connected with a sealing plate (24);
and one end of the torsion spring (25) is connected above the bearing (22), and the other end of the torsion spring (25) is connected to the rotating shaft (23).
6. The chromatograph autoinjection device of claim 5, wherein: be connected with sealing frame (26) on shrouding (24), shrouding (24) one end is connected with first magic subsides (27), first magic subsides (27) back is connected with second magic subsides (28), second magic subsides (28) are connected in chromatograph autosampler (1) one side.
7. The chromatograph autoinjection device of claim 6, wherein: two groups of bearings (22), rotating shafts (23) and torsion springs (25) are symmetrically arranged around the central axis of the sealing plate (24), and the two groups of bearings (22), the rotating shafts (23), the torsion springs (25) and the sealing plate (24) form a rotary reset structure.
8. The chromatograph autoinjection device of claim 1, wherein: one end of the communicating pipe (9) is connected with an annular cylinder (29) in an embedded mode, a sealing ring (30) is connected into the annular cylinder (29), and the sealing ring (30) is connected into the butt joint pipe (31) in a clamping mode;
the clamping groove (32) is formed in the outer peripheral surface of the butt joint pipe (31), and a convex block (33) is connected in the clamping groove (32) in a clamping mode.
CN202221910046.3U 2022-07-20 2022-07-20 Automatic sample introduction device of chromatograph Active CN217717639U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202221910046.3U CN217717639U (en) 2022-07-20 2022-07-20 Automatic sample introduction device of chromatograph

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Application Number Priority Date Filing Date Title
CN202221910046.3U CN217717639U (en) 2022-07-20 2022-07-20 Automatic sample introduction device of chromatograph

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CN217717639U true CN217717639U (en) 2022-11-01

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2024133138A1 (en) * 2022-12-23 2024-06-27 Thermo Fisher Scientific S.P.A. Autosampler support

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2024133138A1 (en) * 2022-12-23 2024-06-27 Thermo Fisher Scientific S.P.A. Autosampler support
GB2625791A (en) * 2022-12-23 2024-07-03 Thermo Fisher Scient S P A Autosampler support

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