JPS58103639A - Sampling and metering device for minute amount of sample liquid - Google Patents
Sampling and metering device for minute amount of sample liquidInfo
- Publication number
- JPS58103639A JPS58103639A JP20324781A JP20324781A JPS58103639A JP S58103639 A JPS58103639 A JP S58103639A JP 20324781 A JP20324781 A JP 20324781A JP 20324781 A JP20324781 A JP 20324781A JP S58103639 A JPS58103639 A JP S58103639A
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- Prior art keywords
- sample liquid
- liquid
- sample
- liquid level
- light emitting
- Prior art date
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N35/00—Automatic analysis not limited to methods or materials provided for in any single one of groups G01N1/00 - G01N33/00; Handling materials therefor
- G01N35/10—Devices for transferring samples or any liquids to, in, or from, the analysis apparatus, e.g. suction devices, injection devices
- G01N35/1095—Devices for transferring samples or any liquids to, in, or from, the analysis apparatus, e.g. suction devices, injection devices for supplying the samples to flow-through analysers
- G01N35/1097—Devices for transferring samples or any liquids to, in, or from, the analysis apparatus, e.g. suction devices, injection devices for supplying the samples to flow-through analysers characterised by the valves
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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)
- Optical Measuring Cells (AREA)
Abstract
Description
【発明の詳細な説明】
本発明は分光光度計等の試料採取装置に係り、−特に、
試料液の微量採取計量装置に関するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a sample collection device such as a spectrophotometer, and in particular:
This invention relates to a device for collecting and measuring a small amount of sample liquid.
例えば臨床用血清分析装置や臨床用Ｎａ、Ｋ。For example, clinical serum analyzers and clinical Na, K.
ｌｉ分分析用先光光度計グラファイトアトマイザを分析
部として用いた原子吸光光度計等は、１０μｔ〜５０μ
ｔという微量の試料液を自動ピヘット或いはマイクロシ
リンジで採取し導入している。Atomic absorption spectrophotometer, etc., which uses a graphite atomizer as the analysis section, is capable of measuring 10 μt to 50 μt.
A very small amount of sample liquid, 1000 yen, is collected and introduced using an automatic pipette or microsyringe.
このような微量の試料液を採取する場合は一般に再現性
が低く、分析値の誤差は専らピペット或いは微量性゛射
器の計量誤差に依存していた。これを改善するには上記
試料計量器の格段の進歩と操作者の慎重な操作を必要と
するが、これは現在の段階では望むのが無理であるとい
える。When collecting such a small amount of sample liquid, reproducibility is generally low, and errors in analytical values depend solely on measurement errors of the pipette or micro-injector. In order to improve this problem, significant advances in the sample measuring device described above and careful operation by the operator are required, which is impossible to achieve at the current stage.
第１図は従来の試料液の採取計量装置の説明図であり、
これはグラファイトアトマイザに試料液を導入する場合
を示す。試料容器１に収容された試料液には液吸入管２
の先端を挿入し、液吸入管２は３方コック式の切換弁３
を介して微量注射器４に接続されている。また、切換弁
３の右側には液射出管６が接続されているので、注射器
４のプランジャ５を偏心カム９の回転と共に上昇させる
と自動的に試料液を吸入し、切換弁３を右に９０゜回転
させた後プランジャ５を押すごとく偏心カムを回転させ
ると、自動的に液射出管６を介して分析部７内に微量の
試料液８を導入することができる。FIG. 1 is an explanatory diagram of a conventional sample liquid collection and measurement device.
This shows the case where a sample liquid is introduced into a graphite atomizer. A liquid suction tube 2 is connected to the sample liquid contained in the sample container 1.
Insert the tip of the liquid suction pipe 2 into the three-way cock type switching valve 3.
It is connected to the microsyringe 4 via. In addition, since a liquid injection pipe 6 is connected to the right side of the switching valve 3, when the plunger 5 of the syringe 4 is raised with the rotation of the eccentric cam 9, the sample liquid is automatically sucked, and the switching valve 3 is moved to the right. When the eccentric cam is rotated by 90 degrees and the plunger 5 is pressed, a small amount of sample liquid 8 can be automatically introduced into the analysis section 7 through the liquid injection tube 6.
しかしこのような注射器による微量吸入・吐出装置では
未熟練者がマイクロピペッタを用いて計量するときのよ
うな大きな計量誤差は生じないが、成程度以上に計量精
度を向上させることが困難であり、また、採取量が変化
した時は偏心カム９を交換するか、注射器４を交換する
必要があり、その作業に時間を要するという問題点をも
っていた。However, with such a micro-inhalation/dispensing device using a syringe, there is no large measurement error that occurs when an unskilled person uses a micropipette, but it is difficult to improve measurement accuracy beyond that level. Furthermore, when the amount to be collected changes, it is necessary to replace the eccentric cam 9 or the syringe 4, which has the problem of requiring time.
本発明は従来の装置に小改良を加えるだけで分析誤差を
大幅に減少させることかで°きる試料液の微量採取計量
装置を提供することを目的とし、そ・の特徴とするとこ
ろは、試料液を輸送するための 。The purpose of the present invention is to provide a device for collecting and measuring a small amount of sample liquid, which can significantly reduce analysis errors by making small improvements to the conventional device. for transporting liquids.
管路を透明材よりなり一定寸法の内径を有する細管とす
ると共に、この細管の長手方向の複数個所に細管を介し
て対向する発光素子部とアレイデテクタとを有する液面
検知器を設け、この一対の液面検知器で検知した液面間
隔より試料液量を求めるごとく構成したことにある。The conduit is a thin tube made of a transparent material and has an inner diameter of a certain size, and a liquid level detector having a light emitting element portion and an array detector facing each other via the thin tube is provided at multiple locations in the longitudinal direction of the thin tube. The structure is such that the sample liquid volume is determined from the liquid level interval detected by a pair of liquid level detectors.
一般に試料液中の成分濃度を求めるには、一定体積或い
は一定重量の試料を計量してその中の溶質の量を測定す
る方法が用いられている。例えば１０μ／！、、１００
μｔを注射器４で採取するが、その計量精度が直接成分
濃度の測定精度に影響する。Generally, to determine the concentration of a component in a sample liquid, a method is used in which a sample of a certain volume or weight is weighed and the amount of solute therein is measured. For example, 10μ/! ,,100
μt is collected using the syringe 4, and its measurement accuracy directly affects the measurement accuracy of the component concentration.
試料液中の被測定成分濃度をＣとすると次式が成立する
。When the concentration of the component to be measured in the sample liquid is C, the following equation holds true.
Ｃ＝Ｍ／Ｎ ・・・・・・（１）
この、Ｍは計量した試料液中の溶質の重量であり、Ｎは
試料液の重量であるので、試料液の採取精度が分析精度
に直接影響する。毎回の試料計量動作において再現性を
低下させる要因としては、液輸送管端面の濡れや液滴の
付着、偏心カムの機械的な精度不足、注射器の気密漏れ
、注射器と液輸管の接続部における液溜り等である。本
発明はこれらの計量時の誤差が残つヤいても、それを補
正して分析精度を向上させるものであり、以下図によっ
て説明する。C=M/N (1)
Since M is the weight of the solute in the weighed sample liquid and N is the weight of the sample liquid, the accuracy with which the sample liquid is collected directly affects the analysis accuracy. Factors that reduce reproducibility in each sample measurement operation include wetting or adhesion of droplets on the end surface of the liquid transport tube, lack of mechanical precision of the eccentric cam, airtight leakage of the syringe, and problems at the connection between the syringe and the liquid transport pipe. It is a liquid puddle, etc. The present invention improves analysis accuracy by correcting any remaining errors during measurement, and will be explained below with reference to the drawings.
第２図は本発明の一実施例である試料液の微量採取計量
装置の説明図で、第１図と同じ部分には同一符号を付し
である。この場合は液射出管６の複数個所に液面検知器
１０．１１を取り付けて信号処理部１２に接続している
。液射出管６は透明で一様な内径を有する細管、例えば
耐食性の合成樹脂細管が用いられ、両液面検知器１０．
１１間の容積は分析に必要な試料量となるように定めら
れている。FIG. 2 is an explanatory diagram of a sample liquid sampling and measuring device according to an embodiment of the present invention, in which the same parts as in FIG. 1 are given the same reference numerals. In this case, liquid level detectors 10 and 11 are attached to a plurality of locations on the liquid injection pipe 6 and connected to the signal processing section 12. The liquid injection tube 6 is a transparent thin tube with a uniform inner diameter, such as a corrosion-resistant synthetic resin thin tube, and both liquid level detectors 10.
The volume between 11 and 11 is determined to be the amount of sample required for analysis.
第３図は第２図の計量部の拡大断面図で、透明な合成樹
脂細管よりなる液射出管６には第１の液面検知器１０と
第２の液面検知器１１とが取り付けである。この両者間
の容量は例えば約１０μｔと定めである。FIG. 3 is an enlarged sectional view of the measuring section shown in FIG. 2, in which a first liquid level detector 10 and a second liquid level detector 11 are attached to the liquid injection tube 6 made of a transparent synthetic resin thin tube. be. The capacitance between the two is set to be approximately 10 μt, for example.
第４図は第３図の第１の液面検知器の断面図で、１０ａ
は多数の小半導体発光素子を直線的に配列した発光素、
子部であり、１０ｂは小半導体光検知素子を直列に配置
したアレイデテクタを示している。発光素子部１０ａの
各素子から発生した小光束は対向する各アレイデテクタ
１０ｂの素子に向っているが、液面１４８以上は液射出
管６の壁面と空気１３との間の反射損失が大きいので透
過光は大幅に減少している。この液面検知器１０の各素
子は１５〜３０μｍ間隔で緻密に配列しているので、液
面１４ａの位置を正確に知ることができる。FIG. 4 is a cross-sectional view of the first liquid level detector shown in FIG.
is a light-emitting element consisting of many small semiconductor light-emitting elements arranged linearly,
In the sub-section, 10b indicates an array detector in which small semiconductor photodetecting elements are arranged in series. The small light beams generated from each element of the light emitting element section 10a are directed toward the elements of each array detector 10b facing each other, but since the reflection loss between the wall surface of the liquid injection tube 6 and the air 13 is large above the liquid level 148, The transmitted light is significantly reduced. Since each element of the liquid level detector 10 is densely arranged at intervals of 15 to 30 μm, the position of the liquid level 14a can be accurately determined.
また、第２の光検知器１１においても同様であるが、こ
の場合液面１４ｂの位置を基準位置に合致されるように
すれば、第２の光検知器１１ｂは比較的素子数の少ない
小形の発光素子部小形のアレイデテクタｌｌｂを用いて
形成することができる。なお、液射出管６は撥水性の合
成樹脂管を用いているので、管壁に付着して残ることが
なく、全試料液を導入できる。The same applies to the second photodetector 11, but in this case, if the position of the liquid level 14b is made to match the reference position, the second photodetector 11b can be made small with a relatively small number of elements. The light emitting element section can be formed using a small array detector Ilb. In addition, since the liquid injection tube 6 is made of a water-repellent synthetic resin tube, the entire sample liquid can be introduced without remaining attached to the tube wall.
このように構成された微量採取計量装置の動作を第２図
によって説明する。切換弁３が液射出管６に連通してい
るときにプランジャ４を僅かに上昇させて液射出管６内
に空気を吸入する。次に、切換弁３を左廻りに９０°回
転させて第２図の状態とし、プラくジャ５を上昇させて
所定の試料液量を吸引し、微量注射器４と切換弁３内に
試料液を充満させる。The operation of the micro-volume sampling and measuring device configured as described above will be explained with reference to FIG. When the switching valve 3 is in communication with the liquid injection pipe 6, the plunger 4 is slightly raised to draw air into the liquid injection pipe 6. Next, the switching valve 3 is rotated 90 degrees counterclockwise to the state shown in FIG. to fill up.
このようにして試料液８０所定量を採取した後は切換弁
３を右廻りに９０°回転させてからプランジャ５を徐々
に押し下げる。したがって、切換弁３、注射器４内の試
料液８は液射出管６内を下降して第３図の状態に近づい
た所でプランジャ５の移動を一旦停止させる。その後は
合成樹脂製で弾力のある液射出管６の上部に設置したね
じ装置等で液射出管６の空気収容部の容積を僅かに変化
させ、試料液８の下端を第２の光検知器１１の基準液面
１４ｂの位置に合致させる。このときの第１の液面検知
器１０の液面１４ａを検知したりニアアレイの位置と基
準液面１４ｂの間隔ｔを知る上る断面積πｄ２／４を乗
じれば試料液８の量が知れ、この試料量のデータは信号
処理部１２に出力されて記憶される。即ち、（１）式の
分母Ｎに相当する導入試料液量を正確に求められたので
、分析結果得られる試料液８中の溶質濃度の分析精度は
向上する。After collecting a predetermined amount of the sample liquid 80 in this manner, the switching valve 3 is rotated clockwise by 90 degrees, and the plunger 5 is gradually pushed down. Therefore, the sample liquid 8 in the switching valve 3 and the syringe 4 descends in the liquid injection tube 6, and when the state approaches the state shown in FIG. 3, the movement of the plunger 5 is temporarily stopped. After that, the volume of the air storage part of the liquid injection tube 6 is slightly changed using a screw device installed at the top of the elastic liquid injection tube 6 made of synthetic resin, and the lower end of the sample liquid 8 is connected to the second photodetector. 11 to match the position of the reference liquid level 14b. At this time, by detecting the liquid level 14a of the first liquid level detector 10 and knowing the distance t between the near array position and the reference liquid level 14b, the amount of the sample liquid 8 can be determined by multiplying by the ascending cross-sectional area πd2/4. This sample amount data is output to the signal processing section 12 and stored. That is, since the amount of introduced sample liquid corresponding to the denominator N in equation (1) can be accurately determined, the analysis accuracy of the solute concentration in the sample liquid 8 obtained as an analysis result is improved.
また、カム９の形状は上記操作を可能にするごとく形成
されると共に、上記一連の試料液採取計量動作は設定し
たプログラムに従って自動的に遂行される。なお、上記
実施例では第２の液面検知器１１を小形簡易化している
が１、これも第１の液面検知器１０と同じものを用いれ
ば、下端液面１４ｂの位置を規制する必要はなく、上記
液面位置の微調整は不要となって、総ての操作を自動化
することができる。Further, the shape of the cam 9 is formed to enable the above operations, and the series of sample liquid collection and measurement operations described above are automatically performed according to a set program. In the above embodiment, the second liquid level detector 11 is simplified in size, but if the same one as the first liquid level detector 10 is used, it is necessary to regulate the position of the lower end liquid level 14b. This eliminates the need for fine adjustment of the liquid level position, and all operations can be automated.
本実施例の微量試料液採取計量装置は、試料液を採取す
るための注射器と、採取した試料液を分析部に移送する
透明細管よりなる液射出管とを備え、この液射出管の所
定容量となる２個所に多数の小形発光素子を直線的に配
列した発光素子部と、それに対向する多数の半導体光検
知器を直線的に配列したアレイデテクタとを用いて液面
位置を検出することによセて、微量液量を正確に自動的
に計量することができる。したがって、採取した眞の液
量を知って分析精度を大幅に向上させることができると
いう効果が得られる。The micro sample liquid collection and measuring device of this embodiment includes a syringe for collecting a sample liquid and a liquid injection tube made of a transparent thin tube for transferring the collected sample liquid to an analysis section, and the liquid injection tube has a predetermined volume. The liquid level position is detected by using a light emitting element section in which a large number of small light emitting elements are arranged linearly in two locations, and an array detector in which a large number of semiconductor photodetectors are arranged in a linear manner facing the light emitting element section. Therefore, a small amount of liquid can be accurately and automatically measured. Therefore, it is possible to obtain the effect that the accuracy of analysis can be greatly improved by knowing the amount of the sampled true liquid.
上記実施例は一対の液面検知器を液射出管６に設けて一
定量の試料液量を計量しているが、この液面検知器の数
を更に増加させると、異なる量の試料液も採取計量する
ことができる。このときのプランジャ５の移動量は異な
るので、それに適した偏心カム９とプログラムを使用す
る。In the above embodiment, a pair of liquid level detectors are installed in the liquid injection tube 6 to measure a fixed amount of sample liquid, but if the number of liquid level detectors is further increased, different amounts of sample liquid can be measured. It can be collected and weighed. Since the amount of movement of the plunger 5 at this time is different, an appropriate eccentric cam 9 and program are used.
本発明の微量試料液の採取計量装置は、液射出管を透明
細管としてその上下２箇所に多数の発光素子を配列した
発光素子部と、これに対向する光検知素子列のアレイデ
テクタを配列してその信号を処理するという比較的簡単
な改良によって、分析誤差を大幅に減少させることがで
きるという効果が得られる。The sampling and measuring device for a small amount of sample liquid of the present invention uses a liquid injection tube as a transparent thin tube, and has a light emitting element part in which a large number of light emitting elements are arranged in two places above and below the light emitting element part, and an array detector having a row of photodetecting elements arranged in opposition thereto. A relatively simple improvement in processing the signal can have the effect of significantly reducing analytical errors.
第１図は従来の試料液の採取計量装置の説明図、第２図
は本発明の一実施例である微量試料液採取計量装置の説
明図、第３図は第２歯の計量部の拡大断面図、第４図は
第３図の第１の光検知器の断面図である。Fig. 1 is an explanatory diagram of a conventional sample liquid collection and measurement device, Fig. 2 is an explanatory diagram of a trace sample liquid collection and measurement device which is an embodiment of the present invention, and Fig. 3 is an enlarged view of the measuring section of the second tooth. 4 is a cross-sectional view of the first photodetector of FIG. 3; FIG.
Claims (1)
試料液の採取計量装置において、上記試料液を輸送する
ための管路を透明材よりなり一定寸法の内径を有する細
管とすると共に、この細管の長手方向の被数個所に上記
細管を介して対向する発光素子部とアレイデテクタとを
有する液面検知器を設けたことを特徴とする試料液の微
量採取計量装置。 ２、上記液面検知器が、多数の小発光素子を直列に配置
した上記発光素子部と、多数の小光電検知知器である特
許請求の範囲第１項記載の試料液の微量採取、計量装置
。 ３、上記試料液量が、上記透明細管の内径をｄとし、上
記液面検知器の上記アレイデテクタの光検知境界素子間
の間隔をｔとしたときは、πｄ ｔ ｔ／４で示される
量である特許請求の範囲第１項記載の試料液の微量採取
計量装置。[Scope of Claims] 1. In a sample liquid collection and measurement device for collecting and measuring a fixed volume of sample liquid and introducing it into an analysis section, the pipe for transporting the sample liquid is made of a transparent material and has an inner diameter of a certain size. A micro-volume collection of a sample liquid, characterized in that a liquid level detector having a light emitting element portion and an array detector facing each other across the thin tube is provided at several positions in the longitudinal direction of the thin tube. Weighing device. 2. Collection and measurement of a small amount of sample liquid according to claim 1, wherein the liquid level detector is the light emitting element section having a large number of small light emitting elements arranged in series and a large number of small photoelectric detectors. Device. 3. The amount of the sample liquid is expressed as πd t t/4, where d is the inner diameter of the transparent capillary, and t is the distance between the light detection boundary elements of the array detector of the liquid level detector. A device for collecting and measuring a small amount of sample liquid according to claim 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20324781A JPS58103639A (en) | 1981-12-15 | 1981-12-15 | Sampling and metering device for minute amount of sample liquid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20324781A JPS58103639A (en) | 1981-12-15 | 1981-12-15 | Sampling and metering device for minute amount of sample liquid |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS58103639A true JPS58103639A (en) | 1983-06-20 |
| JPH0134335B2 JPH0134335B2 (en) | 1989-07-19 |
Family
ID=16470863
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP20324781A Granted JPS58103639A (en) | 1981-12-15 | 1981-12-15 | Sampling and metering device for minute amount of sample liquid |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS58103639A (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0455541U (en) * | 1990-09-20 | 1992-05-13 | ||
| JP2016200562A (en) * | 2015-04-14 | 2016-12-01 | 東レエンジニアリング株式会社 | Liquid sample injection method |
| CN107101680A (en) * | 2017-04-21 | 2017-08-29 | 中国石油天然气股份有限公司 | The method of micrometeor metering system and micrometeor system meters flow |
| JP2018036084A (en) * | 2016-08-30 | 2018-03-08 | 株式会社島津製作所 | Water Quality Analyzer |
| JP2021032783A (en) * | 2019-08-28 | 2021-03-01 | 株式会社アナテック・ヤナコ | Fluid transfer device |
| CN113447310A (en) * | 2021-09-01 | 2021-09-28 | 山东艾琳智能科技有限公司 | Intelligent solid-liquid sampling detector |
| JP2022160421A (en) * | 2015-06-26 | 2022-10-19 | エレメンタル・サイエンティフィック・インコーポレイテッド | System for collecting liquid samples |
| US11933698B2 (en) | 2014-02-27 | 2024-03-19 | Elemental Scientific, Inc. | System for collecting liquid samples from a distance |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8410426B2 (en) * | 2007-11-02 | 2013-04-02 | Agilent Technologies, Inc. | Devices and methods for coupling mass spectrometry devices with chromatography systems |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5151858U (en) * | 1974-10-16 | 1976-04-20 | ||
| JPS52167451U (en) * | 1977-06-08 | 1977-12-19 | ||
| JPS5357972U (en) * | 1976-10-19 | 1978-05-17 | ||
| JPS5455495A (en) * | 1977-10-03 | 1979-05-02 | Technicon Instr | Method of measuring liquid absorption and device for diluting liquid |
| JPS592831U (en) * | 1982-06-29 | 1984-01-10 | ナショナル住宅産業株式会社 | Joiner mounting device |
-
1981
- 1981-12-15 JP JP20324781A patent/JPS58103639A/en active Granted
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5151858U (en) * | 1974-10-16 | 1976-04-20 | ||
| JPS5357972U (en) * | 1976-10-19 | 1978-05-17 | ||
| JPS52167451U (en) * | 1977-06-08 | 1977-12-19 | ||
| JPS5455495A (en) * | 1977-10-03 | 1979-05-02 | Technicon Instr | Method of measuring liquid absorption and device for diluting liquid |
| JPS592831U (en) * | 1982-06-29 | 1984-01-10 | ナショナル住宅産業株式会社 | Joiner mounting device |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0455541U (en) * | 1990-09-20 | 1992-05-13 | ||
| US11933698B2 (en) | 2014-02-27 | 2024-03-19 | Elemental Scientific, Inc. | System for collecting liquid samples from a distance |
| JP2016200562A (en) * | 2015-04-14 | 2016-12-01 | 東レエンジニアリング株式会社 | Liquid sample injection method |
| JP2022160421A (en) * | 2015-06-26 | 2022-10-19 | エレメンタル・サイエンティフィック・インコーポレイテッド | System for collecting liquid samples |
| JP2018036084A (en) * | 2016-08-30 | 2018-03-08 | 株式会社島津製作所 | Water Quality Analyzer |
| CN107101680A (en) * | 2017-04-21 | 2017-08-29 | 中国石油天然气股份有限公司 | The method of micrometeor metering system and micrometeor system meters flow |
| JP2021032783A (en) * | 2019-08-28 | 2021-03-01 | 株式会社アナテック・ヤナコ | Fluid transfer device |
| CN113447310A (en) * | 2021-09-01 | 2021-09-28 | 山东艾琳智能科技有限公司 | Intelligent solid-liquid sampling detector |
| CN113447310B (en) * | 2021-09-01 | 2021-11-02 | 山东艾琳智能科技有限公司 | Intelligent solid-liquid sampling detector |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0134335B2 (en) | 1989-07-19 |
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