Burette stand for photography, reagent titration device, and reagent titration method

Abstract

To provide technical means to reduce the workload of photographers who take recorded images during quantitative titration analysis using a burette for reagent titration, and to improve the image quality of the recorded images.SOLUTION: A burette stand 1 for photographing comprises a base 16, a post 11, a burette gripping part 12 provided at the top of the post 11 for gripping a burette 2 for reagent titration, a camera mounting part 13 provided in the middle of the post 11 for placing a camera 3 for photographing the liquid level of the reagent in the burette 2 in alignment with a measuring scale of the burette 2 corresponding to the liquid level, and a background plate installation part 14 provided at a position opposite to the camera mounting part 13 with the post 11 between them, where a background plate 15 for adjusting the quality of the captured images is installed.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to a photographic burette stand, a reagent titration device, and a reagent titration method. [Background technology]

[0002] Quantitative titration analysis is widely used in which a reagent of known concentration is dripped onto a substance to be titrated using a buret to allow the reaction to proceed and determine the concentration of the substance to be titrated. In quantitative titration analysis, the point at which all of the substances to be titrated have finished reacting is called the equivalence point. This equivalence point is specifically identified by measuring changes in physical properties such as color indicators, pH, and redox potential. The concentration of the substance to be titrated can be determined by stoichiometric calculations using the buret scale to determine the amount of reagent dripped until the equivalence point is reached.

[0003] When performing the quantitative titration analysis described above, in order to prove that the analysis has been performed correctly, a recording image may be taken before and after the titration, in which the liquid level of the reagent in the buret and the scale on the buret corresponding to this liquid level are aligned. The essential requirement for the image quality of the recording image obtained by this shooting is that the relationship between the liquid level and the scale is clear and easily visible.

[0004] Conventionally, the above photography was done by the worker holding the camera by hand, which resulted in blurring of the captured image and made it difficult to grasp the relationship between the liquid level and the scale, and therefore a technical means was required to improve the image quality of the recorded image.

[0005] Additionally, when repeatedly taking images for recording, tasks such as adjusting the camera focus are required each time a photograph is taken, and the complexity of this photographing work places a burden on the worker, so there has also been a demand to reduce the workload of the photographing worker.

[0006] For example, Patent Document 1 discloses a burette in which a vernier scale with a scale indicating the volume is slidably attached to the burette body. By using the burette disclosed in Patent Document 1, the titration amount can be correctly grasped. However, the burette disclosed in Patent Document 1 does not solve the above-mentioned problems related to the work of taking a record image during quantitative titration analysis. [Prior art documents] [Patent documents]

[0007] [Patent Document 1] Japanese Utility Model Application Publication No. 4-118646 Summary of the Invention [Problem to be solved by the invention]

[0008] The present invention aims to provide a technical means for reducing the workload of an operator who takes recorded images when performing quantitative titration analysis using a burette for reagent titration, while also improving the image quality of the recorded images. [Means for solving the problem]

[0009] The inventors conceived the idea that the above-mentioned problems could be solved by a burette stand for photography in which the burette holding section, camera mounting section, and background plate installation section are integrated in a unique form, and thus completed the present invention.

[0010] (1) A burette stand for photography comprising: a base portion; a support; a burette gripping portion provided at the top of the support for gripping a burette for titrating a reagent; a camera mounting portion provided at the middle of the support for mounting a camera that takes a recording image in which the liquid level of the reagent in the burette and the measurement scale of the burette corresponding to the liquid level are aligned; and a background plate mounting portion provided opposite the camera mounting portion across the support for mounting a background plate for adjusting the quality of the captured image.

[0011] The photographic burette stand (1) reduces the workload of the photographer taking recorded images when performing quantitative titration analysis using a burette for reagent titration, while also improving the image quality of the recorded images.

[0012] (2) A burette stand for photography as described in (1), in which the support pillar is made of an L-shaped angle iron, a first flat portion of the L-shaped angle iron forms a front portion of the support pillar and a second flat portion forms a side portion of the support pillar, the camera mounting portion is provided on one of both sides of the side portion of the support pillar to which the front portion of the support pillar is connected, the background plate installation portion is provided on one of both sides of the side portion of the support pillar to which the front portion of the support pillar is not connected, and a slit for photography is formed in the front portion of the support pillar.

[0013] (2) The photography burette stand has a support made of an L-shaped cross-section angle bar, so that even light metal or resin materials can be used to construct a support with sufficient strength. Also, by configuring the camera mounting part and the background plate installation part to be installed on each side of one of the faces that constitutes the cross-section shape, the camera mounting part and the background plate installation part can be easily and accurately positioned in an appropriate position that ensures the necessary shooting distance between them.

[0014] (3) A burette stand for photography as described in (1) or (2), in which the background plate having a surface color that improves the visibility of the measurement scale when photographing the recording image is installed on the background plate installation section.

[0015] The photographic burette stand (3) can further improve the visibility of the contents of the recorded image when quantitative titration analysis is performed using a burette for reagent titration.

[0016] (4) The burette stand for photography according to (3), wherein the surface color of the background plate is white.

[0017] (4) The photographic burette stand makes it possible to maintain relatively stable and good visibility of the measurement scale, even when performing quantitative titration analysis by sequentially using reagents of various colors.

[0018] (5) A reagent titration apparatus, comprising a burette stand for photographing described in any one of (1) to (4), wherein the burette is held in the burette holding portion and the camera is mounted on the camera mounting portion.

[0019] According to the reagent titration device of (5), the above-mentioned effects of the photographing burette stand described in any one of (1) to (4) can be enjoyed, and when a quantitative titration analysis is performed using a burette for reagent titration, the workload of the photography operator who takes the recorded images can be reduced while also improving the image quality of the recorded images.

[0020] (6) A method for reagent titration using the reagent titration apparatus of (5), comprising a step of selecting, from among a plurality of types of colored plates, a background plate having an optimal surface color corresponding to the color of the reagent in the burette and the measurement scale of the burette as the background plate to be installed on the background plate installation portion of the photography burette stand.

[0021] According to the reagent titration method (6), for example, even when quantitative titration analysis is performed by sequentially using reagents of various colors, the visibility of the measurement scale can always be improved stably. Effect of the Invention

[0022] According to the present invention, when performing a quantitative titration analysis using a burette for reagent titration, the workload of the photography operator who takes the recorded images can be reduced while also improving the image quality of the recorded images. [Brief description of the drawings]

[0023] [Figure 1]1 is a side view showing the overall configuration of a burette stand for photography of the present invention and a reagent titration device constructed using the same. FIG. [Diagram 2] 2 is a partially enlarged side view showing the configuration of a main part of a burette stand for photography that constitutes the reagent titration apparatus of FIG. 1. [Diagram 3] 2 is a horizontal cross-sectional view (cross-sectional view taken along the line AA in FIG. 1) showing the configuration of a main part of a burette stand for photography that constitutes the reagent titration device of FIG. 1. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0024] Hereinafter, an embodiment of the present invention will be described. However, the present invention is not limited to the embodiment described below.

[0025] <Burette stand for photography> The burette stand for photography of the present invention is a tool that can stably hold a burette and a camera for recording in a predetermined position when a record image is taken in conjunction with a volumetric titration analysis. This burette stand for photography is further characterized by having a background plate installation section that can place a background plate for adjusting the quality of the captured image in an appropriate position, which contributes to improving the quality of the captured image.

[0026] The reagent titration device of the present invention can be configured by placing a burette for reagent titration and a camera for recording on the burette stand for photographing of the present invention. The burette and camera are not limited to specific devices, and the effects of the present invention can be obtained by configuring the reagent titration device using various devices. Details of the reagent titration device and the reagent titration method that can be performed using the same will be described later.

[0027] 1 is a side view showing the overall configuration of a reagent titration device 10 of the present invention, which is configured by mounting a burette 2 for reagent titration and a recording camera 3 on a burette stand for photographing 1 of the present invention. As shown in the figure, the main body of the burette stand for photographing 1 is formed by a base part 16 and a support column 11 that is erected vertically on the upper surface of the base part 16 along the vertical direction in the usage state.

[0028] Also, as shown in Figure 1, in the photography burette stand 1, a burette holding portion 12 for holding a burette 2 for reagent titration is provided at the top of a support pillar 11, and a camera mounting portion 13 for mounting a recording camera 3 is provided somewhere in the middle of the support pillar 11, which is below the installation position of the burette holding portion 12 on the support pillar 11.

[0029] 1, the photography burette stand 1 is provided with a background plate installation section 14 for installing a background plate 15 for adjusting the quality of a captured image, at a position opposite the camera mounting section 13 across the support 11. The background plate 15 for adjusting the quality of a captured image may be installed in a manner in which it is permanently fixed to the background plate installation section 14, but it is more preferable that it be installed in a manner in which it can be appropriately replaced with another background plate of a different color as necessary.

[0030] [Base part] The base part 16 is a member that supports the support 11 in the photography burette stand 1, and is not limited to a specific shape as long as it has a necessary and sufficient width and weight to prevent the support 11 from collapsing. However, the base part 16 is preferably a plate-like member on whose upper surface a container containing a substance to be titrated can be stably placed, and the upper surface is preferably a member having a width sufficient to allow the container containing the substance to be titrated to be stably placed directly below the dropping port of the burette 2 for reagent titration.

[0031] [Prop] The support 11 may be a rod-like or column-like member having a strength capable of stably supporting the burette 2 in the burette-holding portion 12, the camera 3 in the camera mounting portion 13, and the background plate 15 in the background plate mounting portion 14, and may have a length necessary and sufficient for taking recorded images of the volumetric titration analysis. More specifically, the length of the support 11 (i.e., the height of the support 11 during use) is such that when the burette 2 is held in the burette-holding portion 12 and a container holding the substance to be titrated is placed below its dropping port, the support 11 has a length (height) necessary and sufficient for the dropping port not to enter the container holding the substance to be titrated and for the scale to be read to be placed almost directly in front of the camera mounting portion 13 when the position of the burette 2 is changed in the height direction.

[0032] And, in addition to satisfying the above-mentioned requirements related to the material and size, it is more preferable that the support 11 is made of a so-called angle material (referred to as an "L-shaped angle material" in this specification) which is a column material having an L-shaped cross section as shown in Figures 1 and 3. When the support 11 is made of the above-mentioned L-shaped angle material, the support front part 111 can be formed by the flat part of one of the two orthogonal plate parts constituting the L-shaped angle material (referred to as the "first flat part" in this specification), and the support side part 113 can be formed by the other plate part (referred to as the "second flat part" in this specification) which is perpendicular to the flat part.

[0033] When the support 11 is made of an L-shaped angle material, it is preferable to provide a camera mounting section 13 on one of both sides of the support side section 113 to which the support front section 111 is connected, and a background plate installation section 14 on one of both sides of the support side section 113 to which the support front section 111 is not connected. It is also preferable that the support front section 111 is provided with a photography slit 112 formed therethrough. In this case, if a camera 3 is placed at a position facing the photography slit 112 and photography is performed, a three-dimensional area facing both the support front section 111 and the support side section 113 will be formed. M(See Figure 3) M The position of the burette 2 may be adjusted only in the height direction so that the liquid surface position of the reagent in the burette 2 is included in the imaging region MR included in the imaging region MR (see FIG. 3).

[0034] In addition, as another embodiment in which the shape or configuration of the support 11 is changed in the burette stand for photography of the present invention, instead of the single support 11 in the burette stand for photography 1, three independent supports are provided together, and the burette gripping part 12, the camera mounting part 13, and the background plate installation part 14 are provided individually on each separate support (not shown). Alternatively, the burette stand for photography can be implemented as an embodiment in which the support 11 is formed of a belt-like member having an appropriate width, the burette gripping part 12 is provided at the top of the belt-like member, and the camera mounting part 13 and the background plate installation part 14 are provided at each side edge in the width direction of the belt-like member (not shown). In each of these embodiments, as in the burette stand for photography 1, a record photograph showing the positional relationship between the liquid level of the dripping agent in the burette for reagent titration and the measurement scale of the burette can be clearly taken.

[0035] [Burette grip] The burette gripping part 12 is provided on the top of the support 11 and may be a mechanism that grips the burette 2 for reagent titration in the radial direction and can stably grip and hold the burette 2 for reagent titration in a state in which the burette 2 is erected in the vertical direction. As an example, the burette gripping part 12 may be a mechanism that grips the burette by tightening a bolt into an openable and closable movable member that has a semicircular notch in the portion that contacts the burette 2.

[0036] As described above, the burette holding portion 12, which can stably hold the burette 2 for reagent titration at any vertical position, is provided at the top of the support 11, so that when performing quantitative titration analysis using the burette for reagent titration, a recorded image can be taken while the burette 2 for reagent titration is stably held at any appropriate vertical position such that the liquid level of the reagent is included within the shooting area of ​​the camera 3.

[0037] [Camera mounting section] The camera mounting part 13 is located at the middle of the support 11, and is installed at a position lower than the burette gripping part 12, and may be a platform-like member on which the recording camera 3 can be placed and stably held at that position. The camera 3 needs to be held at a position where it can take an image by aligning the liquid level of the reagent in the burette 2 with the measurement scale of the burette 2 corresponding to the liquid level, but the camera mounting part 13 is not limited to a platform-like member on which the camera is placed, so long as it has a structure that allows the camera 3 to be stably placed at such a position. For example, the camera mounting part may be a camera fixing structure that fixes the camera 3 at a desired position, such as a joint structure having a screw part that can be screwed into a screw hole on the bottom surface of the camera.

[0038] [Background board installation section] The background plate installation section 14 is located at the middle of the support 11, below the bullet gripping section 12, at approximately the same height as the camera mounting section 13, and is installed at a position opposite the camera mounting section 13 with the support 11 in between. The background plate installation section 14 may have a structure capable of stably holding the background plate 15 for adjusting the quality of the captured image in this position while standing vertically. As an example, the background plate installation section 14 may be configured by a clamping structure capable of clamping and suspending the end of the background plate 15 as shown in FIG. 2. Alternatively, the background plate 15 may be directly joined to the support 11, in which case the joint portion of the support 11 serves as the background plate installation section 14.

[0039] [Background board] The background plate 15 is a plate-like member having as its surface color a background color suitable for the purpose of enhancing the visibility of the color of the reagent used in titration and the color of the measurement scale of the burette 2. By disposing such a background plate 15 behind the burette 2 when viewed from the lens side of the camera 3 while the camera 3 is placed on the camera mounting part 13, the visibility of the measurement scale of the burette 2 can be improved, and the photographer can easily take a clearer recorded image with less work burden.

[0040] The surface color of the background plate 15, i.e., the background color, should be selected to have a color tone with a difference in brightness from the color of the reagent. If the reagent is yellow and the measurement scale of the burette 2 is black, selecting a gray background color will enable the liquid level of the reagent in the burette 2 and the measurement scale of the burette 2 that corresponds to this liquid level to be photographed together clearly.

[0041] In addition, it is also one of the preferred embodiments to make the surface color of the background plate 15 white. This makes it possible to maintain relatively stable and good visibility of the measurement scale even when, for example, quantitative titration analysis is carried out by sequentially using reagents of various colors.

[0042] The background plate 15 is preferably installed on the background plate installation section 14 via some fixing structure that can stably fix the background plate 15 in a replaceable manner, such as the above-mentioned sandwiching structure, but is not limited thereto. For example, the background plate can be directly attached to the surface of the support 11 with adhesive tape or the like. As an example, the background plate can be configured as a rectangular cardboard or the like having a part near the end bent inward at a right angle and having a predetermined background color as the surface color of the outer surface, and the above-mentioned folded part of the background plate can be attached with adhesive tape to the peripheral part of the side edge of the support side surface section 113 on the side not connected to the support front surface section 111. As described above, in this case, the part of the support side surface section 113 where the background plate is installed becomes the background plate installation section 14.

[0043] As another embodiment of the background board installation, for example, a plate-shaped substrate is installed in advance at an appropriate position on support 11 facing the lens of camera 3, and a colored paper having a desired surface color is selected and attached to the surface of this plate-shaped substrate, thereby forming a background board. In this case, the substrate corresponds to background board installation section 14, and the colored paper corresponds to background board 15, and each of these sections exerts its own function of contributing to the realization of the effects of the present invention.

[0044] <Reagent titration device> By installing a burette 2 and a camera 3 in the manner described above on the photography burette stand 1 equipped with the background plate 15 described above, it is possible to configure the reagent titration device 10 of the present invention, the overall configuration of which is shown in Figure 1.

[0045] [burette] The burette 2 is attached to a support 11 of a burette stand for photography 1 via a burette gripper 12 in the reagent titration device 10, thereby constituting the reagent titration device 10. As an example of a burette for reagent titration that can thus constitute the reagent titration device 10, a burette for reagent titration specified in "JISR3505:1994 Glass volumeter" can be used. However, the burette constituting the reagent titration device 10 is not limited to this, and a wide variety of known burets can be used in the present invention.

[0046] [camera] The camera 3 is mounted on the support 11 of the photographing burette stand 1 via the camera mounting portion 13 in the reagent titration device 10, thereby constituting the reagent titration device 10. In this way, the recording camera that can constitute the reagent titration device 10 may be any photographing device that can photograph the liquid level of the reagent in the burette for reagent titration and the measurement scale of the burette 2 that corresponds to this liquid level, and as an example, a digital compact camera can be used. However, the camera that constitutes the reagent titration device 10 is not limited to this, and in the present invention, a wide variety of known cameras can be used.

[0047] <Reagent titration method> The reagent titration method of the present invention (hereinafter, also simply referred to as the "reagent titration method") can be carried out by the reagent titration device 10 configured using the photography burette stand 1 described in detail above. As an example, the "reagent titration method" using the reagent titration device 10 can be carried out by sequentially carrying out each of the steps (1) to (8) shown in Table 1 below.

[0048] [Table 1]

[0049] Among the above steps (1) to (8), step (2) is not necessarily required, and for example, a plate with a white surface color can be used as the background plate. However, by including step (2), the visibility of the measurement scale can be always and stably improved, for example, even when quantitative titration analysis is performed by sequentially using reagents of various colors.

[0050] By employing the reagent titration method of the present invention, even if a so-called manual operation type camera in which the focal length, etc., is manually adjusted is used as the camera 3, it is not necessary to redo the "operation of adjusting the focal length, etc." in the above step (7). Also, even if a so-called autofocus type camera in which the focal length, etc. is automatically adjusted is used as the camera 3, by employing the reagent titration method of the present invention, it becomes possible to efficiently and reliably capture the required number of high-quality recorded images with a unified angle of view without placing a burden on the operator. [Explanation of symbols]

[0051] 1 Photographic burette stand 11 Posts 111 Front part of pillar 112 Shooting slit 113 Side part of pillar 12 Burette holder 13 Camera mounting section 14 Background plate installation section 15 Background board 16 Base 2 Burette 3. Camera 10 Reagent titrator

Claims

1. A base portion; The pillars and a burette holder provided at the top of the support for holding a burette for titrating a reagent; a camera mounting section provided at an intermediate portion of the support column for mounting a camera for capturing a recording image in which the liquid level of the reagent in the burette and the measurement scale of the burette corresponding to the liquid level are aligned; a background plate installation unit that is provided at a position facing the camera mounting unit with the support pole therebetween and that installs a background plate for adjusting the quality of a captured image; Equipped with The support is made of an L-shaped angle material, The first flat portion of the L-shaped angle member constitutes a front portion of the support column, and the second flat portion constitutes a side portion of the support column, the camera mounting portion is provided on one of both sides of the column side surface portion to which the column front surface portion is connected, the background plate installation portion is provided on one of both sides of the column side surface portion to which the column front surface portion is not connected, A slit for photography is formed on the front part of the support pillar. A burette stand for photography.

2. the background plate having a surface color that improves visibility of the measurement scale when the recording image is captured is installed on the background plate installation section; 2. The photographic burette stand according to claim 1.

3. The surface color of the background plate is white.

3. A burette stand for photography according to claim 2.

4. The photographic burette stand according to any one of claims 1 to 3, The burette is held by the burette gripping portion, The camera is mounted on the camera mounting portion. Reagent titrator.

5. A reagent titration method using the reagent titration device of claim 4, comprising: a step of selecting, as the background plate to be installed on the background plate installation section of the photography burette stand, the background plate having an optimal surface color according to the color of the reagent in the burette and the measurement scale of the burette from among a plurality of types of colored plates; Reagent titration method.

Images