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Titration Apparatus

A titration device and titration technology, which are used in measurement devices, sampling devices, chemical analysis by titration method, etc., can solve the problems of small injection capacity of syringes, complicated piping, and inability to discharge reagent liquid, etc., and prevent increase and complex structure. The effect of reducing and preventing manufacturing costs

Active Publication Date: 2012-07-04
HORIBA LTD +1
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Problems solved by technology

However, as shown in Patent Document 2, since the injection capacity of the syringe for titration is small, it is impossible to discharge all the reagent solution inside the reagent solution introduction tube for titration, so an air pump must be provided separately, and the piping will become complicated, resulting in The structure of the titration device becomes complicated

Method used

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Embodiment Construction

[0034] One embodiment of the present invention will be described below with reference to the drawings.

[0035] The titration device of the present embodiment is used as an automatic COD measurement device 100 for measuring COD (chemical oxygen demand), one of water quality indicators. More specifically, the COD measurement is continuously performed while changing the sample solution in accordance with the procedure prescribed by JIS.

[0036] That is, if figure 1 As shown, the COD automatic measuring device 100 of the present embodiment includes: a reaction tank 1, which accommodates a sample container 11 for storing a sample liquid inside; a sample liquid introduction mechanism 2, which imports the sample liquid into the sample container 11; Liquid introduction mechanism 3, imports various reagent liquids for COD measurement into described sample container 11; Exhaust from inside to outside. The COD automatic measurement device 100 also includes a control device 5, which ...

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Abstract

The invention provides a titration apparatus, wherein the unbeneficial condition due to the oxidation of reagents in a titration reagent introduction pipe during the standby process can be avoided. The reagent introduction mechanism (3) comprises a titration reagent introduction pipe (34) inserted into a sample vessel (11). The front end (341) of the titration reagent introduction pipe is lower than the liquid level of a reagent in the sample vessel (11); a reagent pumping part (35) used for exiting or pumping the reagent in the titration reagent introduction pipe (34); a control unit (5) used for controlling the pumping operation of the reagent pumping part (35) after the discharging of the reagent discharged from the sample vessel (11) by a reagent discharging mechanism (4).

Description

technical field [0001] The present invention relates to a titration device for performing various titrations such as redox titration and neutralization titration. Background technique [0002] In the case of measuring COD (Chemical Oxygen Demand), which is one of the indicators of water pollution, oxidize the organic matter in the sample solution with potassium permanganate, stop the oxidation with excess sodium oxalate, and then use high Potassium manganate is back titrated to measure the amount of potassium permanganate required for oxidation. [0003] The COD automatic measuring device for automatically performing the titration at least includes: a sample solution introduction mechanism, which imports the sample solution into the sample container; a reagent solution introduction mechanism, which imports the reagent used for titration; a liquid discharge mechanism, which discharges the sample solution after the measurement liquid in the sample container; and a control dev...

Claims

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Application Information

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IPC IPC(8): G01N31/16
CPCG01N1/14G01N31/16G01N33/1806
Inventor 甲斐智子加藤诚田中敦志
Owner HORIBA LTD
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