JP5581985B2 - TOC meter - Google Patents

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JP5581985B2
JP5581985B2 JP2010253547A JP2010253547A JP5581985B2 JP 5581985 B2 JP5581985 B2 JP 5581985B2 JP 2010253547 A JP2010253547 A JP 2010253547A JP 2010253547 A JP2010253547 A JP 2010253547A JP 5581985 B2 JP5581985 B2 JP 5581985B2
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dilution water
water container
toc meter
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toc
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JP2012103189A (en
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明興 中森
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Shimadzu Corp
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本発明は、排水、水道水、下水、純水、その他各種用水に含まれる有機性汚濁物の総量を測定する分析装置に関するものである。   The present invention relates to an analyzer for measuring the total amount of organic pollutants contained in waste water, tap water, sewage, pure water, and other various types of water.

従来の技術Conventional technology

近年、水質調査において全有機体炭素（ＴＯＣ）及び全窒素（ＴＮ）の測定が重要な項目の一つになっており、ＴＯＣやＴＮの測定には燃焼酸化プロセスを用いたＴＯＣ計が用いられている。従来、例えば水中のＴＯＣを測定する水質自動分析装置としては、予めバブリング等により無機体炭素（ＩＣ）が除去された試料を酸化反応管で燃焼させ、発生した二酸化炭素を測定することで直接ＴＯＣ濃度を測定するもの、又はＩＣを含んだまま試料を燃焼させ、測定された全炭素の測定値から、別途測定したＩＣの測定値を差し引くことでＴＯＣ濃度を測定するもの等が知られている（特許文献１参照。）。   In recent years, measurement of total organic carbon (TOC) and total nitrogen (TN) has become one of the important items in water quality surveys, and a TOC meter using a combustion oxidation process has been used to measure TOC and TN. ing. Conventionally, as an automatic water quality analyzer for measuring, for example, TOC in water, a sample from which inorganic carbon (IC) has been removed in advance by bubbling or the like is burned in an oxidation reaction tube, and the generated carbon dioxide is directly measured to determine TOC. Known are those that measure the concentration, or those that measure the TOC concentration by burning the sample while containing the IC and subtracting the measured value of the IC measured separately from the measured value of the total carbon. (See Patent Document 1).

通常、燃焼酸化方式の水質計測器では、試料をキャリアガス通気のもと、一定量を６００〜９００℃に加熱された酸化反応管に注入し、燃焼酸化分解により検出したい元素成分をガス化することでキャリアガスと共に検出器に導入し、計測する。   Usually, in a combustion oxidation type water quality measuring instrument, a sample is injected into an oxidation reaction tube heated to 600 to 900 ° C. under aeration of a carrier gas, and an element component to be detected is gasified by combustion oxidative decomposition. This is introduced into the detector together with the carrier gas and measured.

特開２００８−２３２６９５号公報JP 2008-232695 A

図４は従来のＴＯＣ計の斜視図である。ＴＯＣ計本体１には、試料の希釈や洗浄に使用する希釈水が必要であり、希釈水は２リットル程度の比較的大きな希釈水容器２に入れられている。従来、希釈水容器２はＴＯＣ計１の横にそのまま置いており、特に転倒防止の措置を施していなかったことから、希釈水容器２が転倒する事故が起こっており、特に、希釈水容器２に入れられた希釈水の容量が少なくなると、希釈水容器２は安定性がなくなりよく転倒していた。そのため、希釈水容器２の転倒を防止するための機構を設けることが必要となる。   FIG. 4 is a perspective view of a conventional TOC meter. The TOC meter main body 1 requires dilution water used for sample dilution and washing, and the dilution water is placed in a relatively large dilution water container 2 of about 2 liters. Conventionally, the dilution water container 2 has been placed next to the TOC meter 1 and no accident prevention measures have been taken. Therefore, there has been an accident in which the dilution water container 2 falls. In particular, the dilution water container 2 When the volume of the dilution water put in was reduced, the dilution water container 2 was not stable and fell well. Therefore, it is necessary to provide a mechanism for preventing the dilution water container 2 from overturning.

一方、希釈水は時間の経過により汚染され、汚染された希釈水を用いて分析を行うと分析の精度が下がることから、１週間に１回程度は希釈水を交換することが必要になる。このように定期的に希釈水容器２をＴＯＣ計本体１から取り外して希釈水を交換する作業が必要になるため、転倒を防止する機構として希釈水容器２を固定するベルト等を採用すると、ＴＯＣ計本体１から希釈水容器２を取り外す際に手間や時間がかかる。そのため、希釈水容器２をＴＯＣ計本体１から取り外し難くならないような構造によって、希釈水容器２の転倒を防止する必要がある。   On the other hand, the dilution water is contaminated with the passage of time, and if the analysis is performed using the contaminated dilution water, the accuracy of the analysis is lowered. Therefore, it is necessary to exchange the dilution water about once a week. Thus, since it is necessary to periodically remove the dilution water container 2 from the TOC meter body 1 and replace the dilution water, if a belt or the like for fixing the dilution water container 2 is used as a mechanism for preventing the fall, the TOC It takes time and effort to remove the dilution water container 2 from the meter body 1. Therefore, it is necessary to prevent the dilution water container 2 from being overturned by a structure that does not make it difficult to remove the dilution water container 2 from the TOC meter main body 1.

また、希釈水容器２にはＴＯＣ計本体１に希釈水を送液するためのチューブ３が挿入されており、希釈水容器２をＴＯＣ計本体１から着脱する際は、チューブ３の挿入又は抜出作業が必要になるため、希釈水容器２の転倒を防止する機構を設けることによって、本作業に支障をきたさないようにしなければならない。   A tube 3 for feeding dilution water to the TOC meter main body 1 is inserted into the dilution water container 2, and when the dilution water container 2 is attached to or detached from the TOC meter main body 1, the tube 3 is inserted or removed. Since a work out is required, a mechanism for preventing the dilution water container 2 from overturning should be provided so as not to hinder the main work.

さらに、転倒を防止する機構を新たな部品で設けると部品点数が増えコストも嵩むことになる。   Furthermore, if a mechanism for preventing the fall is provided as a new part, the number of parts increases and the cost increases.

本発明は、これらの課題を解決することができる希釈水容器の転倒防止機構を提供することを目的とする。   An object of this invention is to provide the fall prevention mechanism of the dilution water container which can solve these subjects.

上記課題を解決するためになされた本発明は、試料水を酸化することで得られる二酸化炭素を測定することで試料水中の分析対象成分を測定するＴＯＣ計において、前記試料水を希釈するための希釈水を入れた容器であって、前記ＴＯＣ計が載置された平面に前記ＴＯＣ計とは別体に載置された希釈水容器と、前記ＴＯＣ計の側面部に前記希釈水を入れた希釈水容器を格納するために設けられた凹部と、前記希釈水容器の転倒を防止する希釈水容器転倒防止部とを備え、前記希釈水容器転倒防止部は、前記希釈水容器が、載置された平面に対して傾いた場合に、前記希釈水容器を前記平面との間で挟持することによって一定以上は傾かないように設けられていることを特徴とする。 The present invention made in order to solve the above-mentioned problem is for diluting the sample water in a TOC meter that measures an analysis target component in the sample water by measuring carbon dioxide obtained by oxidizing the sample water. A container containing dilution water, the dilution water container placed separately from the TOC meter on the plane on which the TOC meter was placed, and the dilution water was placed on the side surface of the TOC meter A concave portion provided for storing the dilution water container; and a dilution water container overturn prevention unit for preventing the dilution water container from overturning, wherein the dilution water container overturn prevention unit is mounted on the dilution water container. When it is inclined with respect to the flat surface, the dilution water container is provided so as not to be inclined more than a certain amount by being sandwiched between the flat surface and the flat surface.

そして、前記ＴＯＣ計における前記希釈水容器転倒防止部は、前記ＴＯＣ計のケースの一部分によって形成してもよい。 And the said dilution water container fall prevention part in the said TOC meter may be formed by a part of case of the said TOC meter.

また、前記ＴＯＣ計には、前記ＴＯＣ計のケースと前記希釈水容器の間に、手の指を入れて前記希釈水容器に挿入されたチューブを掴んで指を動かすことが可能な大きさの空間を設けてもよい。 The TOC meter has a size that allows the finger to be moved between the case of the TOC meter and the dilution water container by inserting a finger of a hand and holding the tube inserted in the dilution water container. A space may be provided.

あるいは、前記ＴＯＣ計のケースと前記希釈水容器の間に、手の指を入れて前記希釈水容器を押さえ又は掴んで前記希釈水容器を前記ＴＯＣ計から取り外すことができる大きさの空間を設けてもよい。   Alternatively, a space is provided between the case of the TOC meter and the dilution water container so that a finger can be inserted and the dilution water container can be removed from the TOC meter by holding or holding the dilution water container. May be.

本発明によれば、希釈水容器転倒防止部によって希釈水容器の転倒を防ぐことができる。また、ＴＯＣ計のケース側面に設けられた凹部に希釈水容器を格納することで、希釈水容器２をＴＯＣ計から簡単に取り外しすることができるため、ベルト等を利用した転倒防止機構と比べて、簡単に希釈水容器を着脱することが可能になる。   According to the present invention, the dilution water container can be prevented from falling by the dilution water container falling prevention unit. Moreover, since the dilution water container 2 can be easily detached from the TOC meter by storing the dilution water container in the recess provided on the side surface of the case of the TOC meter, compared with a fall prevention mechanism using a belt or the like. It becomes possible to easily attach and detach the dilution water container.

また、ＴＯＣ計のケースで希釈水容器を押さえれば、新たな部品を使用しなくて済むため、ＴＯＣ計のケースの一部の形状を希釈水容器の形状に合わせて形成して、希釈水容器をＴＯＣ計のケースの一部で転倒しないように押さえることで、ＴＯＣ計のケースを希釈水容器転倒防止部にすることができる。   In addition, if the dilution water container is held in the TOC meter case, it is not necessary to use a new part. Therefore, a part of the shape of the TOC meter case is formed to match the shape of the dilution water container. By holding the TOC meter so as not to fall over a part of the case of the TOC meter, the case of the TOC meter can be used as a dilution water container overturn prevention part.

さらに、希釈水容器から希釈水をＴＯＣ計に送り出すためにＴＯＣ計に装着されたチューブを希釈水容器の容器口に挿入する際にＴＯＣ計と希釈水容器の容器口の間にスペースを設けることで、ＴＯＣ計に希釈水容器が装着された状態で、チューブを指で握りながら、チューブを希釈水容器に挿入することや、チューブの位置を調整することが可能になる。   Furthermore, when inserting the tube attached to the TOC meter into the container port of the dilution water container in order to send the dilution water from the dilution water container to the TOC meter, a space should be provided between the TOC meter and the container port of the dilution water container. Thus, in a state where the dilution water container is mounted on the TOC meter, it is possible to insert the tube into the dilution water container and adjust the position of the tube while grasping the tube with a finger.

また、ＴＯＣ計と希釈水容器の間のスペースに指を入れて希釈水容器を掴んだり押さえたりすることで、ＴＯＣ計から希釈水容器を簡易に取り外すことができる。   Moreover, the dilution water container can be easily removed from the TOC meter by putting a finger in the space between the TOC meter and the dilution water container and holding or holding the dilution water container.

本発明を適用するＴＯＣ計の側面図。The side view of the TOC meter to which the present invention is applied. 本発明を適用するＴＯＣ計の正面図。The front view of the TOC meter to which the present invention is applied. ＴＯＣ計の概略構成図。The schematic block diagram of a TOC meter. 従来のＴＯＣ計の斜視図。The perspective view of the conventional TOC meter.

図３はＴＯＣ計としての全有機体炭素測定装置の概略構成図である。４は試料調製槽であり、試料水が常時流れており、チューブを介してマルチポートバルブ５の１つのポートに接続されており、測定時に試料水が採水される。   FIG. 3 is a schematic configuration diagram of a total organic carbon measuring device as a TOC meter. Reference numeral 4 denotes a sample preparation tank, in which sample water always flows and is connected to one port of the multi-port valve 5 through a tube, and sample water is collected during measurement.

マルチポートバルブ５の他のポートには、試料水から無機体炭素を除去するための酸試薬容器６と、試料水を希釈するための希釈水容器２と、測定値の校正などに用いる標準液容器７が接続されている。マルチポートバルブ５の共通ポートにはシリンジポンプ８が接続されている。シリンジポンプ８はマルチポートバルブ５の切り替えにより、各容器からの液を計量したり混合したり撹拌したりする。   The other ports of the multi-port valve 5 include an acid reagent container 6 for removing inorganic carbon from the sample water, a dilution water container 2 for diluting the sample water, and a standard solution used for calibration of measured values. A container 7 is connected. A syringe pump 8 is connected to the common port of the multiport valve 5. The syringe pump 8 measures, mixes, and agitates the liquid from each container by switching the multi-port valve 5.

試料水を酸化して気化するための酸化反応管９（燃焼管）は、マルチポートバルブ５のポートの一つに接続されている。コンプレッサー１０はシリンジポンプ８又は酸化反応管９に空気を送るための機構であり、空気の流量を制御する流量制御部１１を介して、シリンジポンプ８のスパージガス導入部８ａと酸化反応管９の試料水導入部９ａに接続されている。シリンジポンプ８に送られる空気は爆気処理により試料水中の無機体炭素を除去するスパージガスとして、酸化反応管９に送られる空気は試料水を導通するためのキャリアガスとして用いられる。   An oxidation reaction tube 9 (combustion tube) for oxidizing and vaporizing the sample water is connected to one of the ports of the multiport valve 5. The compressor 10 is a mechanism for sending air to the syringe pump 8 or the oxidation reaction tube 9, and the sample of the sparge gas introduction unit 8 a of the syringe pump 8 and the oxidation reaction tube 9 is passed through a flow rate control unit 11 that controls the flow rate of air. It is connected to the water introduction part 9a. The air sent to the syringe pump 8 is used as a sparge gas for removing inorganic carbon in the sample water by explosion treatment, and the air sent to the oxidation reaction tube 9 is used as a carrier gas for conducting the sample water.

酸化反応管９の排出部９ｂは二酸化炭素検出部９に接続されている。二酸化炭素検出部１２では、例えばＮＤＩＲ（非分散形赤外分光光度計）により二酸化炭素が測定されるようになっている。二酸化炭素検出部９で測定された値はデータ処理部１３によりＴＯＣ濃度に変換される。   The discharge part 9 b of the oxidation reaction tube 9 is connected to the carbon dioxide detection part 9. In the carbon dioxide detector 12, carbon dioxide is measured by, for example, NDIR (non-dispersive infrared spectrophotometer). The value measured by the carbon dioxide detector 9 is converted into the TOC concentration by the data processor 13.

図１は本発明を適用するＴＯＣ計の側面図であり、図２は本発明を適用するＴＯＣ計の正面図である。図１、図２を用いて希釈水容器２の転倒を防止する機構について説明する。   FIG. 1 is a side view of a TOC meter to which the present invention is applied, and FIG. 2 is a front view of the TOC meter to which the present invention is applied. A mechanism for preventing the dilution water container 2 from overturning will be described with reference to FIGS. 1 and 2.

ＴＯＣ計本体１は、ケース２０の中に酸化反応管９等の各部品を格納しており、ケース２０は一部が凹んでおり、その凹み側面には酸試薬容器６を取り付ける酸試薬容器ホルダー１７、標準液容器７を取り付ける標準液容器ホルダー１８が設けられている。また、その凹み部分には、希釈水容器２を格納する希釈水容器格納スペース１６が設けられている。希釈水容器２に入れられる希釈水は１週間に１回程度交換する必要があることから、希釈水容器２を簡単にＴＯＣ計本体１から出し入れできる必要がある。そのため、希釈水容器２を希釈水容器格納スペース１６に簡単に出し入れできるように、希釈水容器格納スペース１６にカバーやフタ等は設けられていない。また、希釈水容器２を希釈水容器格納スペース１６から取り出し易くするために、希釈水容器２を手で掴んだり押さえたりしながら希釈水容器２を取り出せるように、ＴＯＣ計本体１と希釈水容器２の間にはスペース１５が設けられている。   The TOC meter main body 1 stores each component such as an oxidation reaction tube 9 in a case 20, and the case 20 is partially recessed, and an acid reagent container holder to which an acid reagent container 6 is attached on the side of the recess. 17. A standard liquid container holder 18 for attaching the standard liquid container 7 is provided. In addition, a dilution water container storage space 16 for storing the dilution water container 2 is provided in the recessed portion. Since it is necessary to exchange the dilution water put into the dilution water container 2 about once a week, the dilution water container 2 needs to be easily taken in and out of the TOC meter main body 1. Therefore, the dilution water container storage space 16 is not provided with a cover, a lid or the like so that the dilution water container 2 can be easily put in and out of the dilution water container storage space 16. Further, in order to make it easy to take out the dilution water container 2 from the dilution water container storage space 16, the TOC meter main body 1 and the dilution water container can be taken out while the dilution water container 2 can be taken out while grasping or holding the dilution water container 2 by hand. A space 15 is provided between the two.

希釈水容器格納スペース１６に格納された希釈水容器２は、外部からの振動や衝撃によって傾いて転倒しそうになった場合、一定の角度まで傾いた時点で、希釈水容器２は押さえ部１４によってそれ以上傾いて転倒しないように押さえられる。また、押さえ部１４を希釈水容器２の上面に設けることで希釈水容器２がどちらの方向に倒れそうになっても、一定以上傾いた時点で希釈水容器２が押さえ部１４に接触するため、希釈水容器２の転倒を防止することができる。そして、押さえ部１４は、ＴＯＣ計本体１のケースの一部分で希釈水容器２を押さえることができるようにしているため、新しい部品を設ける必要もなく、部品点数やコスト面において優れている。なお、押さえ部１４は希釈水容器２と接触しておらず、希釈水容器２を押さえ部１４と地面の間で挟むことで、希釈水容器２が一定以上に傾くことを防止しているが、希釈水容器２が傾いていない状態で希釈水容器２と押さえ部１４を接触させ、希釈水容器２が傾かないように押さえておくようにしてもよい。   When the dilution water container 2 stored in the dilution water container storage space 16 is inclined to tilt due to external vibration or impact, the dilution water container 2 is It is held down so that it does not fall over. In addition, by providing the holding part 14 on the upper surface of the dilution water container 2, the dilution water container 2 comes into contact with the holding part 14 when the dilution water container 2 tends to fall in any direction when it is inclined more than a certain amount. In addition, the dilution water container 2 can be prevented from overturning. And since the holding | suppressing part 14 has made it possible to hold down the dilution water container 2 by a part of case of the TOC meter main body 1, it is not necessary to provide a new part and is excellent in the number of parts and cost. The holding part 14 is not in contact with the dilution water container 2, and the dilution water container 2 is sandwiched between the holding part 14 and the ground to prevent the dilution water container 2 from being inclined more than a certain level. The dilution water container 2 and the pressing portion 14 may be brought into contact with each other in a state where the dilution water container 2 is not tilted, and may be pressed so as not to tilt.

また、希釈水容器２の容器口には、希釈水をＴＯＣ計本体１に導入するためのチューブ３が挿入されているが、希釈水容器格納スペース１６に格納した希釈水容器２の容器口にチューブ３を挿入し又は抜出す作業を行うために、容器口周辺にはチューブ３を手で掴んだ状態で容器口周辺で手を動かすための空間が必要になることから、ＴＯＣ計本体１と希釈水容器２の間にはスペース１５が設けられている。このようにして、ＴＯＣ計本体１に希釈水容器２が格納された状態で、チューブを指で握りながら、チューブ３を希釈水容器２に挿入することや、チューブ３の位置を調整すること等が可能になる。また、スペース１５には水平方向へ広がる第２スペース１９が設けられており、作業者はこの空間に指をいれてチューブの挿入や調整作業を行うことで、指でチューブを隠すことなく、これらの作業を行うことが出来る。   The tube 3 for introducing the dilution water into the TOC meter main body 1 is inserted into the container opening of the dilution water container 2. The tube opening of the dilution water container 2 stored in the dilution water container storage space 16 is inserted into the container opening of the dilution water container 2. In order to perform the operation of inserting or extracting the tube 3, a space for moving the hand around the container mouth while holding the tube 3 by hand is required around the container mouth. A space 15 is provided between the dilution water containers 2. In this way, with the dilution water container 2 stored in the TOC meter main body 1, the tube 3 is inserted into the dilution water container 2 while holding the tube with a finger, the position of the tube 3 is adjusted, and the like. Is possible. In addition, the space 15 is provided with a second space 19 that extends in the horizontal direction, and an operator inserts a finger into this space to perform insertion and adjustment work, so that these tubes are not hidden with the finger. Can be done.

なお、本実施例においては、スペース１５を使って、希釈水容器２の取り出し作業及びチューブ３を希釈水容器２に挿入し調整等をする作業を行うために、スペース１５の配置、大きさは、希釈水容器２の取り出し作業が行えるように、希釈水容器２を手で掴んだり押さえたりしながら希釈水容器２を取り出せる配置、大きさとし、チューブ３を希釈水容器２に挿入し調整等する作業を行えるように、指でチューブを握れ、指でチューブを隠さないように指を挿入する空間を形成できるような位置、大きさとしている。ただ、本実施例のように一つの空間で２つの作業空間を兼ねるのではなく、それぞれの作業用に別々の空間を設けるように構成しても良い。   In this embodiment, since the space 15 is used to take out the dilution water container 2 and insert the tube 3 into the dilution water container 2 to perform adjustment and the like, the arrangement and size of the space 15 are as follows. The arrangement and size of the dilution water container 2 can be taken out while holding or holding the dilution water container 2 so that the dilution water container 2 can be taken out, and the tube 3 is inserted into the dilution water container 2 and adjusted. The position and size are such that a space can be formed in which a finger can be grasped and a finger can be inserted so as not to hide the tube so that the work can be performed. However, a single space may not be used as two work spaces as in the present embodiment, but a separate space may be provided for each work.

１ ＴＯＣ計本体
２ 希釈水容器
３ チューブ
４ 試料調製槽
５ マルチポートバルブ
６ 酸試薬容器
７ 標準液容器
８ シリンジポンプ
８ａ スパージガス導入部
９ 酸化反応管
９ａ 試料水導入部
９ｂ 排出部
１０ コンプレッサー
１１ 流量制御部
１２ 二酸化炭素検出部
１３ データ処理部
１４ 押さえ部
１５ スペース
１６ 希釈水容器格納スペース
１７ 酸試薬容器ホルダー
１８ 標準液容器ホルダー
１９ 第２スペース
２０ ケース DESCRIPTION OF SYMBOLS 1 TOC meter main body 2 Dilution water container 3 Tube 4 Sample preparation tank 5 Multiport valve 6 Acid reagent container 7 Standard solution container 8 Syringe pump 8a Sparge gas introduction part 9 Oxidation reaction tube 9a Sample water introduction part 9b Discharge part 10 Compressor 11 Flow control Section 12 Carbon dioxide detection section 13 Data processing section 14 Holding section 15 Space 16 Dilution water container storage space 17 Acid reagent container holder 18 Standard solution container holder 19 Second space 20 Case

Claims (4)

試料水を酸化することで得られる二酸化炭素を測定することで試料水中の分析対象成分を測定するＴＯＣ計において、
前記ＴＯＣ計は、
前記試料水を希釈するための希釈水を入れた容器であって、前記ＴＯＣ計が載置された平面に前記ＴＯＣ計とは別体に載置された希釈水容器と、
前記ＴＯＣ計の側面部に前記希釈水を入れた希釈水容器を格納するために設けられた凹部と、
前記希釈水容器の転倒を防止する希釈水容器転倒防止部とを備え、
前記希釈水容器転倒防止部は、前記希釈水容器が、載置された平面に対して傾いた場合に、前記希釈水容器を前記平面との間で挟持することによって一定以上は傾かないように設けられていることを特徴とするＴＯＣ計。 In the TOC meter that measures the component to be analyzed in the sample water by measuring the carbon dioxide obtained by oxidizing the sample water,
The TOC meter is
A dilution water container for diluting the sample water, wherein the dilution water container is mounted separately from the TOC meter on a plane on which the TOC meter is mounted;
A recess provided for storing a dilution water container containing the dilution water in a side surface of the TOC meter;
A dilution water container overturn prevention part for preventing the dilution water container from overturning,
When the dilution water container is tilted with respect to the plane on which it is placed, the dilution water container overturn prevention unit prevents the dilution water container from tilting more than a certain amount by sandwiching the dilution water container with the plane. A TOC meter characterized by being provided. 前記希釈水容器転倒防止部は、前記ＴＯＣ計のケースの一部分によって形成したことを特徴とする請求項１に記載されたＴＯＣ計。   2. The TOC meter according to claim 1, wherein the dilution water container overturn prevention part is formed by a part of a case of the TOC meter. 前記ＴＯＣ計のケースと前記希釈水容器の間に、手の指を入れて前記希釈水容器に挿入されたチューブを掴んで指を動かすことが可能な大きさの空間を設けたことを特徴とする請求項１又は２に記載されたＴＯＣ計。   A space is provided between the case of the TOC meter and the dilution water container so that a finger can be put in and a finger inserted in the dilution water container can be gripped to move the finger. The TOC meter according to claim 1 or 2. 前記ＴＯＣ計のケースと前記希釈水容器の間に、手の指を入れて前記希釈水容器を押さえ又は掴んで前記希釈水容器を前記ＴＯＣ計から取り外すことができる大きさの空間を設けたことを特徴とする請求項１又は２に記載されたＴＯＣ計。   Between the case of the TOC meter and the dilution water container, there was provided a space of a size capable of removing the dilution water container from the TOC meter by inserting a finger of a hand and holding or holding the dilution water container. The TOC meter according to claim 1 or 2, wherein
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