WO2020152802A1 - Liquid chromatograph detector - Google Patents
Liquid chromatograph detector Download PDFInfo
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- WO2020152802A1 WO2020152802A1 PCT/JP2019/002009 JP2019002009W WO2020152802A1 WO 2020152802 A1 WO2020152802 A1 WO 2020152802A1 JP 2019002009 W JP2019002009 W JP 2019002009W WO 2020152802 A1 WO2020152802 A1 WO 2020152802A1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
- G01N21/41—Refractivity; Phase-affecting properties, e.g. optical path length
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
- G01N21/59—Transmissivity
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N30/00—Investigating or analysing materials by separation into components using adsorption, absorption or similar phenomena or using ion-exchange, e.g. chromatography or field flow fractionation
- G01N30/02—Column chromatography
- G01N30/26—Conditioning of the fluid carrier; Flow patterns
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N30/00—Investigating or analysing materials by separation into components using adsorption, absorption or similar phenomena or using ion-exchange, e.g. chromatography or field flow fractionation
- G01N30/02—Column chromatography
- G01N30/62—Detectors specially adapted therefor
- G01N30/74—Optical detectors
Definitions
- the present invention relates to a liquid chromatograph detector.
- a tray for receiving the leak liquid is provided below the switching valve to prevent problems such as contamination in the apparatus due to the leaked solution.
- an object of the present invention is to prevent the leak liquid from the pipe connecting portion of the switching valve from diffusing through the pipe.
- the liquid chromatograph detector includes a cell having an internal space through which a solution containing a sample flows, a measuring unit for measuring the solution flowing through the cell, and a plurality of pipes that communicate with the outlet of the cell.
- a pipe holding portion for holding the pipe at a position above the pipe connection port.
- the switching valve Since the pipe holding portion holds the pipe whose end is fixed to the pipe connecting port of the switching valve at a position above the pipe connecting port, the switching valve The pipe extending from the pipe connection port can be temporarily fixed while being lifted above the pipe connection port.
- the leak liquid that leaks from the pipe connection port and propagates in the pipe tends to fall in the direction of gravity.
- the range in which the leak liquid propagates in the pipe is limited. To be done. Thereby, it is possible to prevent the leak liquid from the pipe connection portion of the switching valve from diffusing along the pipe.
- the detector of this embodiment includes a cell 2, a measuring unit 4, and a switching valve 6.
- the cell 2 has an inlet and an outlet, and has a space inside for flowing a solution containing a sample flowing from the inlet.
- the measuring section 4 measures the optical characteristics of the solution flowing through the cell 2. Optical properties include changes in absorbance and changes in refractive index.
- the switching valve 6 has three pipe connection ports 8, 10 and 12.
- the pipe 14 from the outlet of the cell 2 is fluidly connected to the pipe connection port 8, the pipe 16 leading to the drain is fluidly connected to the pipe connection port 10, and the pipe 14 outflowed from the cell 2 to the pipe connection port 12.
- a pipe 18 for returning (recycling) the solvent to the original solvent container is fluidly connected.
- the switching valve 6 is switched to a state where the pipe connection ports 8 and 10 are connected or a state where the pipe connection ports 8 and 12 are connected. That is, the switching valve 6 is for switching between discharging the solution flowing out from the outlet of the cell 2 to the drain or returning it to the original solvent container for recycling.
- Fig. 2 shows an example of the structure near the switching valve 6.
- the switching valve 6 is fixed to the wall surface inside the housing of the detector by the holding metal fitting 20.
- the pipe connection ports 8, 10 and 12 are provided in different directions.
- a tray 24 for receiving the leak liquid is provided below the switching valve 6.
- the pipe connection ports 8, 10 and 12 are provided in a substantially horizontal direction, but they do not necessarily have to be in a substantially horizontal direction.
- the holding metal fitting 20 is provided with a hollow and substantially cylindrical pipe holding portion 22 having upper and lower surfaces opened at a position above the pipe connection ports 8, 10 and 12 of the switching valve 6.
- the pipes 14, 16 and 18 whose ends are fixed to the pipe connection ports 8, 10 and 12 and extend from the pipe connection ports 8, 10 and 12 are passed through the inside of the pipe holding portion 22, and then the cell 2, It is routed to the drain and the solvent container respectively. That is, each of the pipes 14, 16 and 18 is connected to the pipe connection ports 8, 10 and 12 in the vicinity of the pipe connection ports 8, 10 and 12 where the tray exists below. It has an inclined section that is inclined in a direction in which it rises as it moves away from the end portion fixed to.
- the pipes 14, 16 and 18 are routed so as to extend obliquely upward.
- a tray 24 is arranged below the pipe connection ports 8, 10 and 12, the pipe holding portion 22, and the inclined section of the pipe connection ports 8, 10 and 12.
- the pipe holding portion 22 for holding all the pipes 14, 16 and 18 together is provided, but the present invention is not limited to this, and the pipes 14, 16 and 18 are individually provided. May be provided with a plurality of pipe holding portions.
- a cell (2) having an internal space in which a solution containing a sample flows, and a measuring unit (4) for measuring the solution flowing in the cell (2).
- a plurality of pipe connection ports (8, 10, 12) for fixing the ends of the plurality of pipes (14, 16, 18) including the pipe (14) leading to the outlet of the cell (2) on the outer surface.
- a switching valve (6) for switching the destination of the solution flowing out from the cell (2), and pipes (14, 16,) whose ends are fixed to the pipe connection ports (8, 10, 12). 18) for holding the pipe connection port (18) at a position above the pipe connection ports (8, 10, 12).
- a tray (24) for receiving the leak liquid from the switching valve (6) is provided below the switching valve (6) and is retained by the pipe holding section (22).
- the existing pipes (14, 16, 18) are inclined in a direction in which the pipe (14, 16, 18) rises as it moves away from the end fixed to the pipe connection port (8, 10, 12) within the range where the tray (24) exists below. It may have a sloped section. By doing so, the leak liquid propagating through the pipes (14, 16, 18) can be surely dropped to the tray (24).
- maintenance part (22) WHEREIN All of the some piping (14,16,18) respectively connected to the said some piping connection port (8,10,12) is one place. It may be held. This simplifies the device configuration.
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Abstract
This liquid chromatograph detector is provided with: a cell (2) that has an internal space through which a solution containing a sample flows; a measurement part (4) that measures the solution flowing through the cell (2); a switching valve (6) that has, at the outer surface thereof, a plurality of pipe connection ports (8, 10, 12) for fixing ends of a plurality of pipes (14, 16, 18) including a pipe (14) connected to the outlet of the cell (2), and switches the destination of the solution flowing out from the cell (2); and a pipe holding part (22) that holds the pipes (14, 16, 18) having ends fixed to the respective pipe connection ports (8, 10, 12), at positions above the pipe connection ports (8, 10, 12).
Description
本発明は、液体クロマトグラフ用検出器に関するものである。
The present invention relates to a liquid chromatograph detector.
液体クロマトグラフ用の検出器には、試料の検出に用いた溶媒をドレインへ排出するか、元の溶媒容器へ戻してその溶媒を再利用するかを切替バルブによって切り替えることができるものが存在する（特許文献１参照。）。
There are detectors for liquid chromatographs that can be switched by a switching valve between discharging the solvent used for sample detection to the drain or returning it to the original solvent container and reusing the solvent. (See Patent Document 1).
このような検出器では、複数の配管が切替バルブに接続されるため、液漏れの発生しやすい配管の接続箇所が多くなる。そのため、一般的には、切替バルブの下方にリーク液を受けるためのトレイを設け、漏れた溶液による装置内の汚染等の問題を防止する。
In such a detector, since multiple pipes are connected to the switching valve, there are many pipe connection points where liquid leakage easily occurs. Therefore, generally, a tray for receiving the leak liquid is provided below the switching valve to prevent problems such as contamination in the apparatus due to the leaked solution.
上記のように切替バルブの下方にトレイを設けても、漏れた液が配管を伝ってトレイの設けられていない箇所に落ち、装置内が汚染される等の問題が起こることがあった。そのような問題を防止するために、幅広い範囲を網羅し得る大きなトレイを配置することも考えられる。しかし、切替バルブに接続される配管の引き回しは自由度が高く、配管がどのような方向へ引き回されるかが定かでないため、配管を伝うリーク液の全てを受けられるようにトレイを配置することは困難である。
Even if a tray is provided below the switching valve as described above, the leaked liquid may travel along the pipe and fall to a place where no tray is provided, causing problems such as contamination of the inside of the device. In order to prevent such a problem, it is possible to arrange a large tray that can cover a wide range. However, since the piping connected to the switching valve has a high degree of freedom and it is not clear in which direction the piping will be routed, the tray is arranged so that it can receive all of the leak liquid flowing through the piping. Things are difficult.
そこで、本発明は、切替バルブの配管接続部分からのリーク液が配管を伝って拡散することを抑制することを目的とするものである。
Therefore, an object of the present invention is to prevent the leak liquid from the pipe connecting portion of the switching valve from diffusing through the pipe.
本発明に係る液体クロマトグラフ用検出器は、試料を含む溶液の流れる内部空間を有するセルと、前記セルを流れる溶液の測定を行なうための測定部と、前記セルの出口に通じる配管を含む複数の配管の端部を固定するための複数の配管接続ポートを外面に有し、前記セルから流出した溶液の行先を切り替えるための切替バルブと、前記配管接続ポートに端部が固定されている配管を前記配管接続ポートよりも上方の位置で保持する配管保持部と、を備えている。
The liquid chromatograph detector according to the present invention includes a cell having an internal space through which a solution containing a sample flows, a measuring unit for measuring the solution flowing through the cell, and a plurality of pipes that communicate with the outlet of the cell. A pipe having a plurality of pipe connection ports for fixing the ends of the pipes on the outer surface, a switching valve for switching the destination of the solution flowing out from the cell, and a pipe having the ends fixed to the pipe connection ports. And a pipe holding portion for holding the pipe at a position above the pipe connection port.
本発明に係る液体クロマトグラフ用検出器では、切替バルブの配管接続ポートに端部が固定されている配管を配管接続ポートよりも上方の位置で保持する配管保持部を備えているので、切替バルブの配管接続ポートから延びている配管を一旦、配管接続ポートよりも上方へ持ち上げた状態で固定することができる。配管接続ポートから漏れて配管を伝うリーク液は重力方向へ落ちようとするので、配管接続ポートから延びる配管を一旦、配管接続ポートよりも上方へ持ち上げることによって、リーク液が配管を伝う範囲が限定される。これにより、切替バルブの配管接続部分からのリーク液が配管を伝って拡散することを抑制することができる。
In the liquid chromatograph detector according to the present invention, since the pipe holding portion holds the pipe whose end is fixed to the pipe connecting port of the switching valve at a position above the pipe connecting port, the switching valve The pipe extending from the pipe connection port can be temporarily fixed while being lifted above the pipe connection port. The leak liquid that leaks from the pipe connection port and propagates in the pipe tends to fall in the direction of gravity.Therefore, by temporarily lifting the pipe extending from the pipe connection port above the pipe connection port, the range in which the leak liquid propagates in the pipe is limited. To be done. Thereby, it is possible to prevent the leak liquid from the pipe connection portion of the switching valve from diffusing along the pipe.
以下、図面を参照しながら、液体クロマトグラフ用検出器の一実施例について説明する。
An embodiment of a liquid chromatograph detector will be described below with reference to the drawings.
図１に示されているように、この実施例の検出器は、セル２、測定部４及び切替バルブ６を備えている。セル２は入口及び出口を有し、入口から流入する試料を含む溶液を流すための空間を内部に有する。測定部４はセル２を流れる溶液の光学的特性を測定するものである。光学的特性としては、吸光度変化、屈折率変化などが挙げられる。
As shown in FIG. 1, the detector of this embodiment includes a cell 2, a measuring unit 4, and a switching valve 6. The cell 2 has an inlet and an outlet, and has a space inside for flowing a solution containing a sample flowing from the inlet. The measuring section 4 measures the optical characteristics of the solution flowing through the cell 2. Optical properties include changes in absorbance and changes in refractive index.
切替バルブ６は３つの配管接続ポート８、１０及び１２を備えている。配管接続ポート８にはセル２の出口からの配管１４が流体的に接続され、配管接続ポート１０にはドレインへ通じる配管１６が流体的に接続され、配管接続ポート１２にはセル２から流出した溶媒を元の溶媒容器へ戻す（リサイクル）ための配管１８が流体的に接続されている。切替バルブ６は、配管接続ポート８と１０との間を接続した状態、又は、配管接続ポート８と１２との間を接続した状態に切り替えられる。すなわち、切替バルブ６は、セル２の出口から流出した溶液をドレインへ排出するか、又は、元の溶媒容器へ戻してリサイクルするかを切り替えるためのものである。
The switching valve 6 has three pipe connection ports 8, 10 and 12. The pipe 14 from the outlet of the cell 2 is fluidly connected to the pipe connection port 8, the pipe 16 leading to the drain is fluidly connected to the pipe connection port 10, and the pipe 14 outflowed from the cell 2 to the pipe connection port 12. A pipe 18 for returning (recycling) the solvent to the original solvent container is fluidly connected. The switching valve 6 is switched to a state where the pipe connection ports 8 and 10 are connected or a state where the pipe connection ports 8 and 12 are connected. That is, the switching valve 6 is for switching between discharging the solution flowing out from the outlet of the cell 2 to the drain or returning it to the original solvent container for recycling.
図２に切替バルブ６近傍の構造の一例を示す。
Fig. 2 shows an example of the structure near the switching valve 6.
切替バルブ６は、保持金具２０によって検出器の筐体内の壁面に固定されている。配管接続ポート８、１０及び１２はそれぞれ、互いに異なる方向を向いて設けられている。切替バルブ６の下方にリーク液を受けるためのトレイ２４が設けられている。図２では、配管接続ポート８、１０及び１２が略水平向きに設けられているが、必ずしも略水平向きである必要はない。
The switching valve 6 is fixed to the wall surface inside the housing of the detector by the holding metal fitting 20. The pipe connection ports 8, 10 and 12 are provided in different directions. A tray 24 for receiving the leak liquid is provided below the switching valve 6. In FIG. 2, the pipe connection ports 8, 10 and 12 are provided in a substantially horizontal direction, but they do not necessarily have to be in a substantially horizontal direction.
保持金具２０は、切替バルブ６の配管接続ポート８、１０及び１２よりも上方の位置に、上下面が開口した中空略円筒形状の配管保持部２２を備えている。端部が各配管接続ポート８、１０及び１２に固定されて各配管接続ポート８、１０及び１２から延びる配管１４、１６及び１８は、配管保持部２２の内側を通された後、セル２、ドレイン、溶媒容器へそれぞれ引き回されている。すなわち、各配管１４、１６及び１８は、下方にトレイが存在する配管接続ポート８、１０及び１２の近傍において、配管接続ポート８、１０及び１２．に固定されている端部から離れるほど上昇する方向に傾斜した傾斜区間をもっている。すなわち、各配管１４、１６及び１８は、斜め上方向に向かって延びるように引き回されている。そして、配管接続ポート８、１０及び１２や、配管保持部２２、配管接続ポート８、１０及び１２の傾斜区間の下方にはトレイ２４が配されている。これにより、配管接続ポート８、１０及び１２において液漏れが発生し、リーク液が配管１４、１６及び１８を伝わって移動したとしても、リーク液は配管１４、１６及び１８の傾斜区間において重力によりトレイ２４へ落下する。したがって、リーク液が配管１４、１６及び１８を伝って広範囲に拡散することはない。
The holding metal fitting 20 is provided with a hollow and substantially cylindrical pipe holding portion 22 having upper and lower surfaces opened at a position above the pipe connection ports 8, 10 and 12 of the switching valve 6. The pipes 14, 16 and 18 whose ends are fixed to the pipe connection ports 8, 10 and 12 and extend from the pipe connection ports 8, 10 and 12 are passed through the inside of the pipe holding portion 22, and then the cell 2, It is routed to the drain and the solvent container respectively. That is, each of the pipes 14, 16 and 18 is connected to the pipe connection ports 8, 10 and 12 in the vicinity of the pipe connection ports 8, 10 and 12 where the tray exists below. It has an inclined section that is inclined in a direction in which it rises as it moves away from the end portion fixed to. That is, the pipes 14, 16 and 18 are routed so as to extend obliquely upward. A tray 24 is arranged below the pipe connection ports 8, 10 and 12, the pipe holding portion 22, and the inclined section of the pipe connection ports 8, 10 and 12. As a result, even if liquid leakage occurs in the pipe connection ports 8, 10 and 12, and the leak liquid moves along the pipes 14, 16 and 18, the leak liquid is gravitationally generated in the inclined section of the pipes 14, 16 and 18. It falls on the tray 24. Therefore, the leak liquid does not spread in a wide area through the pipes 14, 16 and 18.
上記実施例では、すべての配管１４、１６及び１８をまとめて保持するための配管保持部２２を備えているが、本発明はこれに限定されるものではなく、配管１４、１６及び１８を個別に保持するための複数の配管保持部を備えていてもよい。
In the above embodiment, the pipe holding portion 22 for holding all the pipes 14, 16 and 18 together is provided, but the present invention is not limited to this, and the pipes 14, 16 and 18 are individually provided. May be provided with a plurality of pipe holding portions.
本発明に係る液体クロマトグラフ用検出器の実施形態では、試料を含む溶液の流れる内部空間を有するセル（２）と、前記セル（２）を流れる溶液の測定を行なうための測定部（４）と、前記セル（２）の出口に通じる配管（１４）を含む複数の配管（１４、１６、１８）の端部を固定するための複数の配管接続ポート（８、１０、１２）を外面に有し、前記セル（２）から流出した溶液の行先を切り替えるための切替バルブ（６）と、前記配管接続ポート（８、１０、１２）に端部が固定されている配管（１４、１６、１８）を前記配管接続ポート（８、１０、１２）よりも上方の位置で保持する配管保持部（２２）と、を備えている。
In the embodiment of the liquid chromatograph detector according to the present invention, a cell (2) having an internal space in which a solution containing a sample flows, and a measuring unit (4) for measuring the solution flowing in the cell (2). And a plurality of pipe connection ports (8, 10, 12) for fixing the ends of the plurality of pipes (14, 16, 18) including the pipe (14) leading to the outlet of the cell (2) on the outer surface. A switching valve (6) for switching the destination of the solution flowing out from the cell (2), and pipes (14, 16,) whose ends are fixed to the pipe connection ports (8, 10, 12). 18) for holding the pipe connection port (18) at a position above the pipe connection ports (8, 10, 12).
上記実施形態において、前記切替バルブ（６）の下方に、前記切替バルブ（６）からのリーク液を受けるためのトレイ（２４）が設けられており、前記配管保持部（２２）に保持されている配管（１４、１６、１８）は、下方に前記トレイ（２４）が存在する範囲内で前記配管接続ポート（８、１０、１２）に固定されている端部から離れるほど上昇する方向に傾斜した傾斜区間をもっていてもよい。そうすれば、配管（１４、１６、１８）を伝うリーク液を前記トレイ（２４）へ確実に落下させることができる。
In the above embodiment, a tray (24) for receiving the leak liquid from the switching valve (6) is provided below the switching valve (6) and is retained by the pipe holding section (22). The existing pipes (14, 16, 18) are inclined in a direction in which the pipe (14, 16, 18) rises as it moves away from the end fixed to the pipe connection port (8, 10, 12) within the range where the tray (24) exists below. It may have a sloped section. By doing so, the leak liquid propagating through the pipes (14, 16, 18) can be surely dropped to the tray (24).
また、上記実施形態において、前記配管保持部（２２）は、前記複数の配管接続ポート（８、１０、１２）にそれぞれ接続された複数の配管（１４、１６、１８）のすべてを１箇所で保持するものであってもよい。そうすれば、装置構成が簡単になる。
Moreover, in the said embodiment, the said piping holding|maintenance part (22) WHEREIN: All of the some piping (14,16,18) respectively connected to the said some piping connection port (8,10,12) is one place. It may be held. This simplifies the device configuration.
２ セル
４ 測定部
６ 切替バルブ
８，１０，１２ 配管接続ポート
１４，１６，１８ 配管
２０ 保持金具
２２ 配管保持部
２４ トレイ 2cell 4 measuring part 6 switching valve 8, 10, 12 pipe connection port 14, 16, 18 pipe 20 holding metal fitting 22 pipe holding part 24 tray
４ 測定部
６ 切替バルブ
８，１０，１２ 配管接続ポート
１４，１６，１８ 配管
２０ 保持金具
２２ 配管保持部
２４ トレイ 2
Claims (3)
- 試料を含む溶液の流れる内部空間を有するセルと、
前記セルを流れる溶液の測定を行なうための測定部と、
前記セルの出口に通じる配管を含む複数の配管の端部を固定するための複数の配管接続ポートを外面に有し、前記セルから流出した溶液の行先を切り替えるための切替バルブと、
前記配管接続ポートに端部が固定されている配管を前記配管接続ポートよりも上方の位置で保持する配管保持部と、を備えた液体クロマトグラフ用検出器。 A cell having an internal space in which a solution containing a sample flows,
A measuring unit for measuring a solution flowing through the cell,
A switching valve for switching the destination of the solution flowing out of the cell, having a plurality of pipe connection ports for fixing the ends of the plurality of pipes including the pipe leading to the outlet of the cell,
A detector for a liquid chromatograph, comprising: a pipe holding portion that holds a pipe whose end is fixed to the pipe connecting port at a position above the pipe connecting port. - 前記切替バルブの下方に、前記切替バルブからのリーク液を受けるためのトレイが設けられており、
前記配管保持部に保持されている配管は、下方に前記トレイが存在する範囲内で前記配管接続ポートに固定されている端部から離れるほど上昇する方向に傾斜した傾斜区間をもっている、請求項１に記載の液体クロマトグラフ用検出器。 Below the switching valve, a tray for receiving leak liquid from the switching valve is provided,
The pipe held by the pipe holding portion has an inclined section that is inclined in a direction in which the pipe is raised as it moves away from an end fixed to the pipe connection port within a range in which the tray exists below. The detector for liquid chromatograph according to. - 前記配管保持部は、前記複数の配管接続ポートにそれぞれ接続された複数の配管のすべてを１箇所で保持するものである、請求項１に記載の液体クロマトグラフ用検出器。 The liquid chromatograph detector according to claim 1, wherein the pipe holding unit holds all of the plurality of pipes respectively connected to the plurality of pipe connection ports at one place.
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| PCT/JP2019/002009 WO2020152802A1 (en) | 2019-01-23 | 2019-01-23 | Liquid chromatograph detector |
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| PCT/JP2019/002009 WO2020152802A1 (en) | 2019-01-23 | 2019-01-23 | Liquid chromatograph detector |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10197506A (en) * | 1996-12-27 | 1998-07-31 | Shimadzu Corp | Liquid chromatograph |
| JP2006138699A (en) * | 2004-11-11 | 2006-06-01 | Japan Analytical Industry Co Ltd | Recycling liquid chromatograph |
| WO2009084235A1 (en) * | 2007-12-28 | 2009-07-09 | Gl Sciences Incorporated | Liquid chromatograph |
| JP2010249622A (en) * | 2009-04-15 | 2010-11-04 | Shimadzu Corp | Liquid chromatograph |
| JP3176511U (en) * | 2012-04-13 | 2012-06-21 | 有限会社シマムラテック | Recycle box for recycle liquid chromatography and recycle liquid chromatograph |
| JP2016176799A (en) * | 2015-03-19 | 2016-10-06 | 株式会社島津製作所 | Differential refractive index detector and liquid chromatograph |
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2019
- 2019-01-23 WO PCT/JP2019/002009 patent/WO2020152802A1/en active Application Filing
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10197506A (en) * | 1996-12-27 | 1998-07-31 | Shimadzu Corp | Liquid chromatograph |
| JP2006138699A (en) * | 2004-11-11 | 2006-06-01 | Japan Analytical Industry Co Ltd | Recycling liquid chromatograph |
| WO2009084235A1 (en) * | 2007-12-28 | 2009-07-09 | Gl Sciences Incorporated | Liquid chromatograph |
| JP2010249622A (en) * | 2009-04-15 | 2010-11-04 | Shimadzu Corp | Liquid chromatograph |
| JP3176511U (en) * | 2012-04-13 | 2012-06-21 | 有限会社シマムラテック | Recycle box for recycle liquid chromatography and recycle liquid chromatograph |
| JP2016176799A (en) * | 2015-03-19 | 2016-10-06 | 株式会社島津製作所 | Differential refractive index detector and liquid chromatograph |
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