JPS6067849A - Reagent managing apparatus - Google Patents

Abstract

PURPOSE:To elevate the reliability of an analyzer by providing a detector body having two electrodes so arranged to be insertable into a reagent container and a means of detecting conductivity between the electrodes to enable simultaneous monitoring of deterioration in a solution and the residual level thereof. CONSTITUTION:After a lid of a container C is closed by passing a support member 2 through a hole bored in the lid, a detector body 1 is placed on the bottom of a container and is connected to a conductivity measuring device 3 with a socket. In the detector body 1, two sheets of electrodes 13 and 14 are arranged at the top and bottom of a cylindrical body 12 with vent holes 11 bored at upper and lower positions thereof and a temperature detection element 15 provided at the bottom thereof. The conductivity measuring device 3 is operated to detect the concentration from the resistance between the electrodes 13 and 14 and from the temperature detection element 15. As the liquid surface of a solution falls below the electrode 13, the electric resistance between the electrodes 13 and 14 becomes infinite and an alarm is given from the conductivity measuring device 3.

Description

[Detailed description of the invention] B. Technical field The present invention relates to a conductive reagent management device.

To manage reagents such as standard solutions in conventional analyzers, the liquid level in the reagent container is detected and an alarm is activated when the remaining amount is low to prompt replenishment of the reagent. was.

By the way, in order to supply the reagent from the reagent container to the analyzer by suctioning it with a pump or the like, the reagent container must be opened to the atmosphere, and as time passes, the solvent evaporates and the concentration of the reagent changes. For this reason, if the reagent remains in the container, no alarm is issued even though the concentration of the reagent is changing, resulting in a problem that errors occur during calibration.

C. Objectives In view of these problems, an object of the present invention is to provide a reagent management device that can detect the remaining amount and concentration of a reagent.

23 Structure of the Invention In other words, the feature of the present invention is that the concentration and remaining amount of the solution can be controlled by arranging two electrodes one above the other in a container and measuring the conductivity between the electrodes. That's what I did.

E. Embodiments The details of the present invention will be explained below based on illustrated embodiments.

The figure shows an embodiment of the present invention, in which reference numeral l denotes the detector body, with ventilation holes 11 and 11 in the upper and lower parts.
Two electrode plates 13 and 14 are placed inside the cylindrical body 12 with
are arranged in a vertical relationship, and a temperature detection element 15 such as a thermistor is arranged at the bottom. 2 is the detector body 1
A support member attached to the upper part of the container C, with through holes 21 and 21 in the upper part and at a position separated by the thickness of the lid of the container C from the support member.
It consists of a pipe with a hole in it, and is configured to serve both as a guide for the lead wires of the electrodes 13 and 4 and the temperature detecting element 15, and for venting air from the reagent container. 3 is a conductivity measuring device that is connected to the detector main body 1 through a socket with a cord 4, and measures the conductivity of the solution, that is, eI&, based on the resistance between the electrodes 8i13 and 14 and the temperature signal from the temperature detection element 15. It is configured to detect this and activate an alarm when the conductivity reaches zero.

In this embodiment, the socket is removed from the device main body, the support member 2 is passed through the hole drilled in the lid of the container C, the lid is closed, the detector main body 1 is placed on the bottom of the container, and the conductivity is measured using the socket. Connect with measuring device 3. When the conductivity measuring device 3 is activated after completing such preparations, the specific conductivity K and temperature to of the solution are input, and K/K o (1+ a t ) = C However,
KO Specific conductivity α at 20°C: The concentration C of the standard solution is detected based on the relationship of a constant specific to the electrolyte, and this is stored. Once the initial concentration measurements are completed in this way,
When the pump of the analyzer (not shown) is activated, it is opened to the atmosphere through the two through holes 21, 21 of the support member 2.
The solution flows smoothly into the analysis cell. When the solvent evaporates and the C degree changes due to long-term use, the electrical resistance between the electrodes 13 and 14 of the detector body 10 changes, so it changes from the initially measured value, indicating that the concentration of the solution has changed. . In addition, as the consumption of the solution progresses, the liquid level of the solution is lowered to the upper electrode 13.
When the temperature drops further, the electrical resistance between the electrodes 13 and 14 becomes infinite, giving off an alarm and prompting the solution to be replenished.

As explained above, according to the present invention, two electrodes are arranged in a vertical relationship and the conductivity between the electrodes is measured, so that the deterioration and remaining amount of the solution can be monitored at the same time. It is possible to improve the reliability of the analyzer.

[Brief explanation of drawings]

The figure is a configuration diagram of an apparatus showing an embodiment of the present invention. 1...Detector body 13.14...Electrode 2...
...Shishiji component C...Container applicant Shimadzu Corporation agent Patent attorney Haruto Nishikawa Katsuhiko Kimura

Claims (1)

[Claims] A reagent management device comprising a detector main body configured to be inserted into a reagent container with two electrodes arranged in a vertical relationship, and means for detecting the conductivity between the electrodes.