JPH06123735A - Measuring method in moisture measuring apparatus - Google Patents
Measuring method in moisture measuring apparatusInfo
- Publication number
- JPH06123735A JPH06123735A JP29819392A JP29819392A JPH06123735A JP H06123735 A JPH06123735 A JP H06123735A JP 29819392 A JP29819392 A JP 29819392A JP 29819392 A JP29819392 A JP 29819392A JP H06123735 A JPH06123735 A JP H06123735A
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- JP
- Japan
- Prior art keywords
- sample
- moisture
- container
- measured
- measuring
- Prior art date
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Classifications
-
- 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
- G01N35/1079—Devices for transferring samples or any liquids to, in, or from, the analysis apparatus, e.g. suction devices, injection devices with means for piercing stoppers or septums
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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)
- Investigating Or Analyzing Non-Biological Materials By The Use Of Chemical Means (AREA)
- Sampling And Sample Adjustment (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】この発明は、水分測定装置におけ
る測定方法に関し、さらに詳しくは、試料容器内に容納
された被測定試料を加熱して水分を気化させ、当該試料
中に含まれる水分量を測定するカール・フィッシャー水
分定量法を実施するための水分測定装置において、ドラ
イパージ下で試料容器内に密封容納された被測定試料の
含有水分量を正確に検出して測定するための測定方法の
改良に係るものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a measuring method in a moisture measuring device, and more specifically, it heats a sample to be measured contained in a sample container to vaporize the moisture, and the amount of moisture contained in the sample. Measuring method for accurately detecting and measuring the water content of the sample to be measured that is hermetically stored in the sample container under dry purge in a moisture measuring device for carrying out the Karl Fischer moisture determination method Related to the improvement of.
【０００２】[0002]
【従来の技術】一般に、カール・フィッシャー水分定量
法を用いる水分測定装置においては、ドライパージされ
た試料容器内に被測定試料を容納しておき、当該試料容
器内を測定部に接続させた上で、これを外部から加熱し
て水分を気化させ、かつ気化された水分をキャリアガス
により測定部に導入させて、その水分量を測定するよう
にしている。2. Description of the Related Art Generally, in a moisture measuring apparatus using the Karl Fischer moisture determination method, a sample to be measured is stored in a dry-purged sample container, and the inside of the sample container is connected to a measuring section. Then, this is heated from the outside to vaporize the moisture, and the vaporized moisture is introduced into the measurement section by the carrier gas to measure the amount of the moisture.
【０００３】すなわち、従来のこの種の水分測定装置の
場合には、例えば、特開平１−２１６２２６号公報に開
示されているように、予めドライパージされた試料容器
内に被測定試料を容納すると共に、その開口部を蓋部材
の被蓋で密封シールさせておき、このようにドライパー
ジ下で被測定試料を密封容納した試料容器について、加
熱気化処理の直前に蓋部材を取り外して開蓋させ、かつ
当該開蓋された試料容器を装置の測定位置に移動して再
度、Ｏリングの介在で密封状態にシールさせ、その後、
先のように操作処理して測定するのである。That is, in the case of this type of conventional moisture measuring apparatus, for example, as disclosed in Japanese Patent Laid-Open No. 1-216226, the sample to be measured is stored in a sample container which has been previously dry-purged. At the same time, the opening is hermetically sealed by the lid of the lid member, and for the sample container in which the sample to be measured is hermetically stored under the dry purge in this way, the lid member is removed and opened immediately before the heating vaporization process. And, the opened sample container is moved to the measurement position of the device, and again sealed by the interposition of the O-ring, and thereafter,
The operation is processed and measured as described above.
【０００４】[0004]
【発明が解決しようとする課題】しかしながら、前記し
た従来の水分測定装置では、被測定試料を容納した試料
容器を用いる測定に際して、まず、加熱気化処理の直前
に蓋部材を取り外して一旦、開蓋させ、ついで、装置の
測定位置に移動し、再度、密封シールさせるようにして
いるために、せっかくドライパージ下で被測定試料を密
封容納した試料容器内に対しては、一旦、開蓋させた
後、再度、密封シールさせるまでの間に、たとえ微量で
はあるにもせよ、周囲雰囲気から水分が侵入して、被測
定試料の含有水分量を正確かつ厳密には測定し得ないと
いう、この種の水分測定装置にとっては致命的な欠陥と
もなりかねない問題点があった。However, in the above-mentioned conventional moisture measuring apparatus, in the measurement using the sample container in which the sample to be measured is stored, first, the lid member is removed immediately before the heating and vaporizing process, and the lid is once opened. Then, after moving to the measurement position of the device and sealing again, the sample container in which the sample to be measured was hermetically stored under the dry purge was once opened. After that, even if it is a very small amount, water will invade from the ambient atmosphere until the airtight sealing is performed again, and the water content of the sample to be measured cannot be measured accurately and exactly. There was a problem that could be a fatal defect for this moisture measuring device.
【０００５】この発明は、このような従来の問題点を解
消するためになされたもので、その目的とするところ
は、ドライパージ下で試料容器内に密封容納された被測
定試料の含有水分量を正確に検出して測定し得るように
した、この種の水分測定装置における測定方法を提供す
ることである。The present invention has been made to solve the above-mentioned conventional problems, and its object is to contain the water content of the sample to be measured which is hermetically stored in the sample container under dry purge. The present invention is to provide a measuring method in a moisture measuring device of this kind, which is capable of accurately detecting and measuring.
【０００６】[0006]
【課題を解決するための手段】前記の目的を達成するた
めに、この発明に係る水分測定装置における測定方法
は、予めドライパージされた試料容器内に被測定試料を
容納すると共に、開口部を薄膜シート状の蓋片により被
蓋して密封シールさせ、当該薄膜シート状蓋片に対し
て、中空測定針を直接、刺通させて測定操作をなし得る
ようにしたものである。In order to achieve the above object, a measuring method in a moisture measuring apparatus according to the present invention stores a sample to be measured in a sample container which has been dry-purged in advance, and has an opening portion. A thin film sheet-like lid is covered and hermetically sealed, and a hollow measuring needle is directly pierced through the thin film sheet-like lid to perform a measurement operation.
【０００７】すなわち、この発明は、予めドライパージ
された試料容器内に被測定試料を容納すると共に、当該
試料容器の開口部を水分の侵入不能な薄膜シート状蓋片
により被蓋して密封シールさせて用い、このようにドラ
イパージ下で被測定試料を密封容納した試料容器の薄膜
シート状蓋片に対して、測定部に連通させた中空測定針
を直接、刺通させて測定操作を行なうことを特徴とする
水分測定装置における測定方法である。That is, according to the present invention, a sample to be measured is stored in a sample container which has been previously dry-purged, and the opening of the sample container is covered with a thin film sheet-like lid that is incapable of infiltrating water to form a hermetic seal. In this way, the measurement operation is performed by directly piercing the hollow measuring needle in communication with the measuring section to the thin film sheet-like lid piece of the sample container in which the measured sample is hermetically stored under the dry purge. It is a measuring method in a moisture measuring device characterized by the above.
【０００８】[0008]
【作用】従って、この発明方法では、ドライパージ下で
被測定試料を密封容納した試料容器の薄膜シート状蓋片
に対し、中空測定針を直接、刺通させることにより当該
試料容器内を測定部に連通させるようにし、この状態で
測定操作を行なうようにしているために、当該被測定試
料における含有水分量の測定に際しては、試料容器内へ
の周囲雰囲気からの水分の侵入を完全に阻止できて、正
確かつ厳密な測定が可能になる。Therefore, according to the method of the present invention, the hollow measuring needle is directly pierced through the thin film sheet-like lid of the sample container in which the sample to be measured is hermetically stored under the dry purge to measure the inside of the sample container. In order to measure the water content in the sample to be measured, it is possible to completely prevent the invasion of water from the ambient atmosphere into the sample container. Therefore, accurate and precise measurement becomes possible.
【０００９】[0009]
【実施例】以下、この発明に係る水分測定装置における
測定方法の実施例につき、図１および図２を参照して詳
細に説明する。EXAMPLES Examples of the measuring method in the moisture measuring apparatus according to the present invention will be described in detail below with reference to FIGS. 1 and 2.
【００１０】図１は、この発明方法に用いる水分測定装
置における試料容器への被測定試料の密封容納手段の一
例を順次模式的に示す縦断面図であり、また、図２は、
同上この発明方法の一実施例を適用した水分量測定時の
態様を順次模式的に示す縦断面図である。FIG. 1 is a vertical cross-sectional view sequentially and schematically showing an example of a means for hermetically storing a sample to be measured in a sample container in a water content measuring apparatus used in the method of the present invention, and FIG.
FIG. 3 is a vertical cross-sectional view sequentially and schematically showing a mode at the time of measuring a water content to which an embodiment of the method of the present invention is applied.
【００１１】この実施例方法においては、試料容器とし
て開口部１ａを開口させた耐熱性容器体１を使用し、当
該耐熱性容器体１内をドライパージさせた状態で被測定
試料２を容納すると共に、開口部１ａに対し、水分の侵
入不能な薄膜シート状蓋片、こゝでは、アルミニウムの
箔膜シート片（以下、アルミシート片と呼ぶ）３を接着
させることにより、全面で密封シールして適用するもの
で、この場合、試料容器としての耐熱性容器体１内への
被測定試料２のアルミシート片３による密封容納を、例
えば、次のようにして行なう。In the method of this embodiment, a heat-resistant container 1 having an opening 1a is used as a sample container, and a sample 2 to be measured is stored in the heat-resistant container 1 in a dry-purged state. At the same time, a thin film sheet-like lid piece that is impervious to moisture, in this case, an aluminum foil film sheet piece (hereinafter referred to as an aluminum sheet piece) 3 is adhered to the opening 1a to hermetically seal the entire surface. In this case, the sealed storage of the sample 2 to be measured by the aluminum sheet piece 3 in the heat-resistant container body 1 as the sample container is performed as follows, for example.
【００１２】すなわち、図１（ａ）に示されているよう
に、上方に開口された耐熱性の容器体１を使用し、同図
（ｂ）に示す如く、当該容器体１の開口部１ａを適当な
水分遮蔽板１００の下面に接して外部雰囲気から遮断さ
せた状態で、加熱パージ部１０、ドライガスパージ部２
０、試料投入部３０、およびアルミシール部４０の各部
に対し、順次段階的に歩進させて各段階毎の処理をなし
得るようにさせ、これらの各処理段階を経て、結果的
に、ドライパージ下で被測定試料２を密封容納した試料
容器５０を得るのである。That is, as shown in FIG. 1 (a), a heat-resistant container body 1 having an upper opening is used, and as shown in FIG. 1 (b), an opening 1a of the container body 1 is used. Is in contact with the lower surface of an appropriate moisture shielding plate 100 and is shielded from the external atmosphere, the heating purge unit 10 and the dry gas purge unit 2
0, the sample loading section 30, and the aluminum seal section 40 are made to step by step so that each step can be processed, and after each of these processing steps, as a result, dry The sample container 50 in which the sample 2 to be measured is sealed and stored is obtained under purging.
【００１３】これをより詳細に述べると、まず、前記加
熱パージ部１０においては、熱風導入管１１から熱風を
導入して容器体１内の水分をパージ処理させ、処理後の
水分を含んだ廃熱風を廃熱風排出管１２から排出し、ま
た、前記ドライガスパージ部２０においては、ドライガ
スとして、例えば、Ｎ2 ガスを用い、前記熱風によっ
て、一旦、水分をパージ処理した容器体１内に、ドライ
ガス導入管２１を通して当該Ｎ2 ガスを導入することに
より、再度、容器体１内の水分をより確実にパージ処理
させ、こゝでも、処理後の幾分かの残余の水分を含んだ
廃Ｎ2 ガスを廃ドライガス排出管２２から排出する。To describe this in more detail, first, in the heating purge section 10, hot air is introduced from the hot air introducing pipe 11 to purge the water in the container body 1 and waste containing the processed water is removed. Hot air is discharged from the waste hot air discharge pipe 12, and in the dry gas purge unit 20, for example, N 2 gas is used as a dry gas, and the hot air blows moisture into the container body 1 once, By introducing the N 2 gas through the dry gas introducing pipe 21, the water content in the container body 1 can be purged more reliably again, and even in this case, some residual water content after the treatment is removed. The N 2 gas is discharged from the waste dry gas discharge pipe 22.
【００１４】従って、これらの各処理段階を経た容器体
１については、後の被測定試料２の含有水分量の測定の
妨げとなる水分が完全にパージされて、当該容器体１の
内部に水分が全く存在しない。Therefore, with respect to the container body 1 that has undergone each of these processing steps, the water content that impedes the subsequent measurement of the water content of the sample 2 to be measured is completely purged, and the water content inside the container body 1 is completely removed. Does not exist at all.
【００１５】引続き、前記試料投入部３０においては、
前記容器体１での水分パージ状態を維持したまゝで、試
料導入装置３１からの導入シュート３２を通した容器体
１内への被測定試料２の投入、例えば、必要に応じて、
全段階での場合と同様に、ドライガス導入管３３からの
Ｎ2 ガスの導入、および廃ドライガス排出管３４からの
廃Ｎ2 ガスの排出の下に、容器体１内に被測定試料２を
投入して容納させ、さらに、前記アルミシール部４０に
おいては、前記水分パージ状態で被測定試料２を容納さ
せた容器体１の開口部１ａに対して、開口部シール装置
４１により水分の侵入不能なアルミシート片３の接着に
よる密封シールがなされる。Subsequently, in the sample charging section 30,
While the water purging state in the container body 1 is maintained, the sample 2 to be measured is introduced into the container body 1 through the introduction chute 32 from the sample introduction device 31, for example, if necessary,
As in the case of all stages, the sample 2 to be measured is placed in the container body 1 under the introduction of the N 2 gas from the dry gas introduction pipe 33 and the discharge of the waste N 2 gas from the waste dry gas discharge pipe 34. In the aluminum seal portion 40, moisture is introduced into the opening 1a of the container body 1 in which the sample 2 to be measured is stored in the water purge state by the opening sealing device 41. A hermetic seal is made by bonding the impossible aluminum sheet pieces 3.
【００１６】従って、これらの各処理段階を経た後、容
器体１内には、水分パージ状態で被測定試料２が容納さ
れると共に、開口部１ａにアルミシート片３の接着によ
る密封シールがなされることになり、この結果、ドライ
パージ下で被測定試料２を密封容納した試料容器５０が
得られる。Therefore, after passing through these processing steps, the sample 2 to be measured is stored in the container body 1 in a water-purged state, and the opening 1a is hermetically sealed by adhesion of the aluminum sheet piece 3. As a result, the sample container 50 in which the sample 2 to be measured is hermetically stored under the dry purge is obtained.
【００１７】しかして、この実施例方法では、前記のよ
うにして得た試料容器５０を用い、図２（ａ）に示され
ているように、当該試料容器５０を加熱コイル５１内に
配置かつ保持させた状態において、この場合、図示省略
した測定部に対して連通させた中空測定針５２により、
開口部１ａを密封シールするアルミシート片３に対し、
当該中空測定針５２の針先部５２ａを上方から直接、刺
通させて試料容器５０の内部に臨ませるもので、これに
よって、こゝでの試料容器５０内をあらためて開封させ
ることなしに、つまり、試料容器５０内、ひいては、被
測定試料２を外部雰囲気に曝して水分の侵入を許したり
せずに、当該試料容器５０の内部と測定部との間を連通
させ得るのであり、その後、従来の手法の場合と全く同
様に、前記加熱コイル５１によって、試料容器５０内の
被測定試料２を所期通りに加熱して水分を気化させると
共に、この気化された水分をＮ2 ガスなどにより測定部
に取り込んで、当該試料中に含まれる水分量を測定する
のである。In the method of this embodiment, however, the sample container 50 obtained as described above is used, and the sample container 50 is placed in the heating coil 51 as shown in FIG. 2 (a). In the held state, in this case, by the hollow measuring needle 52 communicating with the measuring unit (not shown),
For the aluminum sheet piece 3 that hermetically seals the opening 1a,
The needle tip portion 52a of the hollow measuring needle 52 is directly pierced from above to face the inside of the sample container 50, and thus, without opening the inside of the sample container 50 again, that is, The inside of the sample container 50 and, by extension, the sample to be measured 2 can be communicated with the inside of the sample container 50 and the measurement unit without exposing the sample 2 to the external atmosphere to allow the intrusion of water. In exactly the same manner as in the above method, the heating coil 51 heats the sample 2 to be measured in the sample container 50 as expected to vaporize the moisture, and the vaporized moisture is measured by N 2 gas or the like. It is taken into a part and the amount of water contained in the sample is measured.
【００１８】従って、この実施例方法の場合には、ドラ
イパージ下で被測定試料２を密封容納した試料容器５０
のアルミシート片３に対し、中空測定針５２を直接、刺
通させることにより当該試料容器５０内を測定部に連通
させることができるもので、当該被測定試料２における
含有水分量の測定に際し、試料容器５０内への周囲雰囲
気からの水分の侵入を完全に阻止できて、正確な水分測
定が可能になる。Therefore, in the case of the method of this embodiment, the sample container 50 in which the sample 2 to be measured is sealed and stored under the dry purge.
The inside of the sample container 50 can be communicated with the measuring section by directly inserting the hollow measuring needle 52 into the aluminum sheet piece 3 of 1. When measuring the water content in the measured sample 2, Intrusion of moisture from the ambient atmosphere into the sample container 50 can be completely prevented, and accurate moisture measurement can be performed.
【００１９】[0019]
【発明の効果】以上、実施例によって詳述したように、
この発明方法によれば、予めドライパージされた試料容
器内に被測定試料を容納すると共に、当該試料容器の開
口部を水分の侵入不能な薄膜シート状蓋片により被蓋し
て密封シールさせて用い、このようにドライパージ下で
被測定試料を密封容納した試料容器の薄膜シート状蓋片
に対して、測定部に連通させた中空測定針を直接、刺通
させて測定操作を行なうようにしたから、被測定試料に
おける含有水分量の測定に際して、試料容器内への周囲
雰囲気からの水分の侵入を完全に阻止できるもので、結
果的に、被測定試料の含有水分量を極めて正確かつ厳密
に測定し得るのであり、しかも、従来の場合とは全く異
なって、試料容器を開蓋させるための手段が不要である
ために、装置構成をも簡略化できて容易に実施可能であ
るなどの優れた特長を有するものである。As described above in detail with reference to the embodiments,
According to the method of the present invention, the sample to be measured is stored in the sample container that has been dry-purged in advance, and the opening of the sample container is covered with the thin film sheet-like lid that is incapable of infiltration of water to hermetically seal. In this way, the hollow measuring needle in communication with the measuring section is directly pierced into the thin film sheet-like lid of the sample container in which the sample to be measured is hermetically stored under the dry purge in order to perform the measurement operation. Therefore, when measuring the water content of the sample to be measured, it is possible to completely prevent the intrusion of water from the ambient atmosphere into the sample container, and as a result, the content of water in the sample to be measured can be measured accurately and accurately. Moreover, unlike the conventional case, since the means for opening the sample container is completely different from the conventional case, the device configuration can be simplified and easily implemented. Excellent special And it has a.
【図１】（ａ）、（ｂ）は、この発明方法に用いる水分
測定装置での試料容器への被測定試料の密封容納手段の
一例を順次模式的に示すそれぞれに縦断面図である。1 (a) and 1 (b) are vertical cross-sectional views each schematically showing an example of means for hermetically storing a sample to be measured in a sample container in a moisture measuring apparatus used in the method of the present invention.
【図２】（ａ）、（ｂ）は、同上この発明方法の一実施
例を適用した水分量測定時の態様を順次模式的に示すそ
れぞれに縦断面図である。2 (a) and 2 (b) are vertical cross-sectional views each schematically showing in sequence the modes at the time of measuring the water content to which the embodiment of the method of the present invention is applied.
【符号の説明】 １ 試料容器としての耐熱性容器体 １ａ 耐熱性容器体の開口部 ２ 被測定試料 ３ アルミシート片（水分の侵入不能な薄膜シート状蓋
片） １０ 加熱パージ部 １１ 熱風導入管 １２ 廃熱風排出管 ２０ ドライガスパージ部 ２１ ドライガス導入管 ２２ 廃ドライガス排出管 ３０ 試料投入部 ３１ 試料導入装置 ３２ 導入シュート ３３ ドライガス導入管 ３４ 廃ドライガス排出管 ４０ アルミシール部 ４１ 開口部シール装置 ５０ ドライパージ下で被測定試料を密封容納した試料
容器 ５１ 加熱コイル ５２ 中空測定針 ５２ａ 中空測定針の針先部[Explanation of reference numerals] 1 heat-resistant container body as a sample container 1a opening of heat-resistant container body 2 sample to be measured 3 aluminum sheet piece (thin film sheet-like lid piece in which moisture cannot penetrate) 10 heating purge section 11 hot air introducing tube 12 Waste hot air discharge pipe 20 Dry gas purge part 21 Dry gas introduction pipe 22 Waste dry gas discharge pipe 30 Sample introduction part 31 Sample introduction device 32 Introduction chute 33 Dry gas introduction pipe 34 Waste dry gas discharge pipe 40 Aluminum seal part 41 Opening seal Apparatus 50 Sample container in which the sample to be measured is hermetically stored under dry purge 51 Heating coil 52 Hollow measuring needle 52a Needle tip of hollow measuring needle
Claims (3)
測定試料を容納すると共に、当該試料容器の開口部を水
分の侵入不能な薄膜シート状蓋片により被蓋して密封シ
ールさせて用い、このようにドライパージ下で被測定試
料を密封容納した試料容器の薄膜シート状蓋片に対し
て、測定部に連通させた中空測定針を直接、刺通させて
測定操作を行なうことを特徴とする水分測定装置におけ
る測定方法。1. A sample container to be measured is stored in a sample container that has been dry-purged in advance, and the opening of the sample container is covered with a thin film sheet-like lid piece into which water cannot penetrate, and is hermetically sealed. Thus, the measurement operation is performed by directly piercing the thin measurement sheet-like lid of the sample container in which the sample to be measured is hermetically stored under the dry purge with the hollow measuring needle directly connected to the measuring section. Measuring method in a moisture measuring device.
シート片であることを特徴とする請求項１記載の水分測
定装置における測定方法。2. The measuring method for a moisture measuring apparatus according to claim 1, wherein the thin film sheet lid piece is an aluminum sheet piece.
シート片であり、当該アルミニウムシート片を前記試料
容器の開口部に接着して密封シールさせることを特徴と
する請求項１記載の水分測定装置における測定方法。3. The moisture measuring apparatus according to claim 1, wherein the thin film sheet lid piece is an aluminum sheet piece, and the aluminum sheet piece is adhered to the opening of the sample container to hermetically seal it. Measuring method.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP29819392A JP3426624B2 (en) | 1992-10-12 | 1992-10-12 | Measuring method in moisture measuring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP29819392A JP3426624B2 (en) | 1992-10-12 | 1992-10-12 | Measuring method in moisture measuring device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH06123735A true JPH06123735A (en) | 1994-05-06 |
| JP3426624B2 JP3426624B2 (en) | 2003-07-14 |
Family
ID=17856425
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP29819392A Expired - Fee Related JP3426624B2 (en) | 1992-10-12 | 1992-10-12 | Measuring method in moisture measuring device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3426624B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008120801A (en) * | 1995-11-22 | 2008-05-29 | Wako Pure Chem Ind Ltd | Nonaqueous solvent with low water content and portioning device for the same |
| CN105728552A (en) * | 2016-03-15 | 2016-07-06 | 赵士立 | Aluminum plate puncture device |
-
1992
- 1992-10-12 JP JP29819392A patent/JP3426624B2/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008120801A (en) * | 1995-11-22 | 2008-05-29 | Wako Pure Chem Ind Ltd | Nonaqueous solvent with low water content and portioning device for the same |
| CN105728552A (en) * | 2016-03-15 | 2016-07-06 | 赵士立 | Aluminum plate puncture device |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3426624B2 (en) | 2003-07-14 |
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