JP3190292U - Colorimetric measuring device - Google Patents

Abstract

There is provided a colorimetric measuring apparatus capable of accurately measuring a coloring degree by omitting a complicated sampling operation and easily colorimetrically comparing a standard solution and a liquid to be measured.
A colorimetric tube 2 for standard solution and a colorimetric tube 1 for liquid to be measured are connected to a pipe 4 through an opening provided at the top and bottom of the colorimetric tube 1 for liquid to be measured. Is filled in the colorimetric tube 1 for the liquid to be measured through the pipe 4. Furthermore, when it is necessary to perform colorimetry with a plurality of standard solutions, the colorimetric tube of the standard solution is held on a rotatable holder so that the degree of coloration of the liquid to be measured can be confirmed easily and accurately. It becomes possible.
[Selection] Figure 1

Description

The present invention provides a colorimetric measuring device that can accurately determine the degree of coloration by making it possible to easily compare the color of a sample solution such as a standard solution and drainage without using an expensive and complicated device. About.

When draining wastewater into a sewer or the like at a factory or work place, it is necessary to check whether the wastewater is colored. At this time, as a method for determining whether the sample is colored, there is a method in which the color of the drainage sample is compared with the standard solution having a predetermined standard coloring degree.

However, when this method is used, it is necessary to draw a drainage sample into a predetermined colorimetric tube and compare it with a standard solution placed in a colorimetric tube of the same size. There are cases where the operation of putting in is complicated, the wastewater sample is mixed with harmful substances, or it is acidic or alkaline, and there is a risk of handling. In addition, when comparing the color of the standard solution with the naked eye, it is necessary to always prepare a plurality of standard solutions and compare them side by side with the standard solution in order to check which color is close to the standard solution. It is complicated.

In view of such a situation, an apparatus for automatically and continuously monitoring the hue of water including wastewater has been proposed. (For example, Patent Document 1) However, according to this method, it is necessary to use a complicated and expensive machine, and when measuring a sample whose hue is not constant, such as wastewater from a factory, from countless combinations of colors. As a result, there are many cases in which the hue cannot be automatically determined by the machine depending on the hue and must be determined by human eyes.

JP-A-8-254528

In order to solve these problems, the present invention eliminates troublesome sampling work, and easily compares the standard solution and the solution to be measured by color to easily measure the degree of coloration. Providing equipment.

The inventors have prepared a colorimetric tube for standard solution and a colorimetric tube for liquid to be measured, and further provided openings at the top and bottom of the colorimetric tube for liquid to be measured, and the liquid to be measured is passed through the piping from the opening. It has been found that the above problem can be solved by providing a structure in which the liquid to be measured is filled in the colorimetric tube for the liquid to be measured.

According to the colorimetric measuring device of the present invention, there is provided a colorimetric measuring device capable of accurately measuring the degree of coloration by omitting a complicated sampling operation and easily comparing the standard solution and the liquid to be measured visually. It can be provided.

The colorimetric tube for the liquid to be used used in the present invention has a shape in which piping is connected so that the liquid to be measured can flow up and down. At this time, the structure is such that the liquid to be measured is stored in the colorimetric tube for the liquid to be measured during measurement. Examples of such structures include a method of storing the liquid to be measured by flowing the liquid to be measured from the bottom to the top while suppressing the flow rate, and a cock provided below the colorimetric tube for the liquid to be measured. In some cases, the cock is closed and the liquid to be measured flows from the top to the bottom to store the liquid to be measured. In addition, the colorimetric tube used for the colorimetric tube for the liquid to be measured may have any shape or size, but the color can be appropriately compared with the standard solution introduced into the standard solution colorimetric tube described later. Thus, it is necessary to set the shape and size so that the thickness of the measurement solution in the viewing direction is equal to that of the standard solution. Examples of the material of the colorimetric tube include glass and transparent plastics such as acrylic resin and polycarbonate resin.

The standard colorimetric tube used in the present invention may be any shape and size so long as the standard solution can be introduced into the colorimetric tube. For example, a commercially available test tube can be used. Examples of the material of the colorimetric tube include glass and transparent plastics such as acrylic resin and polycarbonate resin, as in the case of the colorimetric tube for the liquid to be measured. As a standard solution to be introduced into the colorimetric tube for standard solution, a standard solution having a reference color tone can be arbitrarily introduced. Examples of such a standard solution have a specific Hazen color number or a Gardner color number. A liquid is illustrated.

The standard colorimetric tube and the colorimetric tube for the solution to be measured are installed in parallel so that the colors can be properly compared. If there are multiple reference standard solutions, multiple standard solution colorimetric tubes can be installed in parallel with the colorimetric tube for the solution to be measured, but multiple standard solution colorimetric tubes can be installed on a rotatable holding device. In addition, it is preferable that a color solution to be colorimetrically arranged and a colorimetric tube for the liquid to be measured be arranged in parallel at the closest position, so that more accurate colorimetry can be performed.

As described above in detail, by using the colorimetric measuring device of the present invention, the complicated and dangerous sampling work can be omitted without using an expensive and complicated device, and the standard solution and the target can be easily measured visually. By measuring the color of the liquid, the degree of coloring can be measured with high accuracy.

1 is a front view of a specific example of a colorimetric measuring apparatus according to the present invention. It is a front view of what installed the standard liquid colorimetric tube in the turntable among one specific Example of the colorimetric measuring apparatus of this invention.

An embodiment will be described below with reference to the accompanying drawings. In the colorimetric measuring device of the present invention, for example, as shown in FIG. 1, a measured liquid colorimetric tube 1 is installed at the right end, and pipes 4 are installed above and below the measured liquid colorimetric tube 1. A plurality of standard solution colorimetric tubes 2 charged with standard solutions 3 having different reference values were installed in parallel with the measured solution colorimetric tube 1. At the time of measurement, the liquid to be measured 5 is circulated from the bottom to the top through the pipe 4, and the liquid to be measured is appropriately color-matched with the liquid to be measured 5 and the standard liquid 3 introduced into the standard liquid colorimetric tube 2. It becomes possible to confirm the coloring degree.

Further, for example, as shown in FIG. 2, by holding a plurality of standard solution colorimetric tubes 2 charged with standard solutions 3 having different reference values on a turntable 6, the turntable is appropriately rotated, and the color tone of the liquid to be measured is determined. By making the standard solution colorimetric tube 2 into which the standard solution 3 considered to be close is located closest to the specific measurement solution colorimetric tube 1, the degree of coloration of the solution to be measured can be more easily and accurately. Can be confirmed.

1: Measured liquid colorimetric tube 2: Standard solution colorimetric tube 3: Standard solution 4: Pipe 5: Measured liquid 6: Turntable

Claims (2)

It has a colorimetric tube for standard solution and a colorimetric tube for liquid to be measured, and the colorimetric tube for liquid to be measured is connected to the pipe through the upper and lower openings, and the liquid to be measured is for the liquid to be measured through the pipe. A colorimetric measuring device having a structure that fills a colorimetric tube. 2. The colorimetric measuring apparatus according to claim 1, further comprising a plurality of standard solution colorimetric tubes, wherein the standard solution colorimetric tube is held by a rotatable holder.

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