JP3423178B2 - Amino acid analyzer - Google Patents

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to an amino acid analyzer, and more particularly to an amino acid analyzer for quantitatively analyzing various amino acids contained in blood or the like.

[0002]

2. Description of the Related Art Generally, an amino acid analyzer is used for quantitatively analyzing various amino acids contained in blood and the like, and since a large number of samples to be tested are analyzed automatically and continuously, a large amount of amino acids Kind of reagent, and because of this,
A large number of reagent containers are housed inside a housing. Further, the amino acid analyzer requires the introduction of the sample to be tested, the confirmation of the remaining amount of the reagent, the replacement of the pump seal and the valve seal at the time of maintenance and inspection, the separation column, the reaction column and the ammonia column.

[0003]

The above-mentioned conventional amino acid analyzer does not consider the remaining amount of reagents in a large number of reagent containers, the ease of replacement of reagent containers, etc. It is not easy to confirm the remaining amount of the reagent and replace the reagent container, and there is a problem that it takes time.

Further, in the above-mentioned conventional amino acid analyzer, the maintenance and inspection work is performed on the rear surface of the housing or
Since the plate constituting the housing must be removed from the side surface, the workability is poor and it is difficult to improve the efficiency of maintenance work.

The object of the present invention is to solve the above-mentioned problems of the prior art, to easily confirm the remaining amount of the reagent in a large number of reagent containers, to replace the reagent containers, to facilitate maintenance work, and to be easy to use. It is to provide a good amino acid analyzer.

[0006]

According to the present invention, the above object is to provide a plurality of reagent containers for storing a plurality of reagents, a pump for sequentially switching a plurality of reagents, and a sample to be tested in the reagents. A sampler for injection, a separation column, at least one reagent container for storing at least one reaction reagent, a reaction column, a detector, and a waste liquid tank are included, and these are housed in one housing. In the amino acid analyzer , all of the plurality of reagent containers are
And by a sampler to inject the sample under test in the reagent was disposed so as to be exposed on the front side of the housing, also,
Before SL sampler, a separation column, the reaction column, a reagent container, pump, waste tank, dew switching valve on the front side of the housing
It is achieved by arranging it so that it will come out .

Further, the above-mentioned object is to arrange a plurality of pumps in parallel above a waste liquid tank, to arrange a sampler on the side of the detector, and to arrange a reaction column on the other side, This is achieved by arranging the portion for introducing the sample to be tested into the sampler at a height of 800 mm to 1050 mm from the installation floor surface.

Further, the object is to provide two doors only on the front side of the housing, and each door is provided at its left and right ends so as to be openable and closable by hinges, so that the contacting portion of the two doors is the housing. By forming a concave recess inside the body,
It is also achieved by providing the concave portion with a smooth or convex pattern.

[0009] Further, the above-mentioned object is that the casing is constructed by providing a top plate on the upper part thereof, and the width of 70 mm to the center of the front side of the top plate
This is achieved by forming a protrusion of 400 mm and forming a handle portion provided on the door so as to form an outer edge along the shape of the protrusion portion of the top plate.

[0010]

BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of an amino acid analyzer according to the present invention will be described in detail below with reference to the drawings.

FIG. 1 is a block diagram showing a functional configuration example of an amino acid analyzer according to one embodiment of the present invention.
The functional configuration of the amino acid analyzer and its analysis operation will be described with reference to FIG. In FIG. 1, 1 to 5 and 11-1
11-3 are reagent containers, 6 and 6'are valve groups, 7 and 12
Is a pump, 8 is an ammonia filter column, 9 is an autosampler, 10 is a separation column, 13 is a mixer, 14 is a reaction column, 15 is a detector, 16 is a data processor, 17
Is a heater and 18 is a waste liquid tank.

In FIG. 1, reagent containers 1 to 4 store different types of first to fourth buffer solutions, a reagent container 5 stores a column regenerant liquid, and reagent containers 11-1 to 11-1.
Ninhydrin reagent is stored in 1-3. The reagent held in the reagent containers 1 to 4 is a carry solution of the sample, which is the sample to be tested, that is, a buffer solution, and the time for which the sample passes through the separation column is different for each reagent. When the sample passes through the separation column quickly, the measurement time becomes short, but the measurement item as the measurement component cannot be accurately separated, and the measurement accuracy decreases. On the other hand, if the above-mentioned passage time is long, the measurement time becomes long, and the life of the column is shortened because the measured substance remains in the column. Reagent containers 1 to 4 for amino acid analysis
A desired reagent is selected from the first to fourth buffer solutions in the valve group 6 in terms of measurement items and measurement time, and the ammonia pump column 8 for the buffer solution is pumped by the buffer solution pump 7.
It is sent to the separation column 10 via the auto sampler 9.

The ammonia filter column 8 removes the ammonia component contained in the fed reagent,
The baseline at the detector 15 constituted by a photometer or the like is adjusted so that all the detected amino acids agree with each other. The auto sampler 9 is an ammonia filter column 8
The test sample to be analyzed is mixed with the reagent sent from.

The reagent in which the sample to be tested containing various amino acids is mixed by the autosampler 9 is sent to the separation column 10 and various amino acids are separated along the time axis. One of the ninhydrin reagents, which is the detection reagent delivered by the valve 6 ′ and the pump 12 for the ninhydrin reagent, is mixed by the mixer 13 with the reagent containing the separated amino acids delivered from the separation column 10.

The reagent containing the separated amino acid mixed with one of the ninhydrin reagents is sent to the reaction column 14 and heated by the heater 17 to develop a color. The reagent containing the amino acid colored by the reaction is sent to the detector 15 to continuously detect the amino acid, and the waste liquid tank 1
8 is discharged. The detector 15 is configured to include a photometer for detecting transmitted light, and the detection signal thereof is recorded and stored as a chromatogram and data by the data processing device 16.

The basic structure and basic analysis operation of the amino acid analyzer described above are known.

FIG. 2 shows an apparatus which has been improved as an apparatus which can be actually proved by improving the amino acid analyzing apparatus described with reference to FIG. The device shown in FIG. 2 is a device showing an embodiment of the present invention, and is a front view and a perspective view. Figure 2
In FIG. 2A, 4 ′, 11-4 are preliminary reagent containers, 21 is a housing, 22 is a top plate, 23 is a side plate, 24,
24 'is a door, 25, 25' are handles, 26, 27 are partition plates, and other reference numerals are the same as in the case of FIG.

As shown in FIG. 2, the amino acid analyzer according to one embodiment of the present invention includes the functional elements described with reference to FIG. 1 on the top plate 22, side plates 23, and left and right side plates by hinges (not shown). It is configured to be housed in a housing 21 composed of two left and right doors 24, 24 'attached to the front side and handles 25, 25' provided on the doors. Case 2
The inside of 1 is partitioned by horizontal and vertical partition plates 26 and 27.

Inside the housing 21, a two-stage container for the reagent containers is formed, and the reagent containers 2 to 5 described in FIG. 1 and the preliminary reagent container 4'for the buffer solution are formed in the upper stage. It is stored. Further, the reagent containers 1, 11-1 to 11-3 are shown in the lower stage.
And a spare reagent container 11-4 for the ninhydrin reagent are stored. The reagent containers stored in the above locations are
When the doors 24, 24 ′ of the housing 21 are opened, they are exposed on the front surface side of the housing 21 and are arranged so that they can be replaced from the front surface side. Further, inside the casing 21, an ammonia column 8, an autosampler 9, a separation column 10, pumps 7, 1 are provided.
2, reaction column 14, waste liquid container 18, valves 6, 6 ',
The detector 15 is arranged so as to be directly visible when the doors 24, 24 ′ of the housing 21 are opened.

As described above, by forming the storage portion for the two-stage reagent container inside the housing 21, the lateral dimension of the housing 21 can be reduced and the amino acid analyzer can be made compact as a whole. Can be configured. Further, by storing various functional elements inside the housing 21 as described above, the remaining amount of the reagent in the reagent container can be easily confirmed, and the reagent container of the reagent whose remaining amount is insufficient. Can be easily replaced without moving another reagent container. Further, simply by opening the doors 24, 24 'on the front side of the housing 21, the sample to be tested, which is a sample, is introduced from the front side, various reagents are confirmed, pump seals for maintenance and inspection, valve seal replacement, separation column 10, the reaction column 14 and the ammonia filter column 8 can be easily cleaned and replaced.

Further, in the example shown in FIG. 2, the waste liquid container 18
Pumps 7 and 12 are arranged in parallel above the
The autosampler 9 is arranged on the side of the above and the reaction column 14 is arranged on the opposite side. Further, the position of the inlet 9 ′ of the sample to be tested, which is a sample to the autosampler 9, is set to be 800 mm to 1050 mm from the floor surface on which the amino acid analyzer is installed.

As described above, by arranging the pumps 7 and 12 in parallel, the vertical direction of the amino acid analyzer can be made compact, and the autosampler 9 and the reaction column 14 are arranged on both sides of the detector 15. As a result, it is possible to shorten the pipe through which the reagent flows. Further, by setting the position of the inlet 9'for the sample to be tested at the height as described above, the operator can
Work can be performed in a comfortable posture in a standing posture.

FIG. 3 shows a reagent container 1 and reagent containers 11-1 to 11-1.
It is a figure which shows arrangement | positioning with 1-4. In FIG. 3, a partition plate 19 is formed between the reagent container 1 and the reagent container 11-3. Although not shown, the partition plate 19 has a size slightly higher than the height of the reagent container.

The partition plate 19 described above is used for the reagent containers 1 and 11
It has the effect of preventing falls of -1 to 11-4. The reagent containers 1 to 5 and 11-1 to 11-4 are formed of resinous material, for example, plastics such as polyethylene, polycarbonate, and Teflon.
Since 11-3 are installed close to each other, when pressurized by the pumps 7 and 12 described above, there is a high possibility that the reagent containers will collide with each other and collide with each other.
It is important to prevent a fall due to 9. Furthermore, the reagent container 1,
Although the operator gives a sense of danger when 11-3 expands, the partition plate 19 allows the sense of danger to be softened visually.

Although not shown, a partition plate 19 is also formed between the reagent containers 2-5.

FIG. 4 is a perspective view showing the outer shape of the housing 21 and a top view showing the shape of the top plate, FIG. 5 is a sectional view for explaining the structure of the door handle, and FIG. 6 shows two left doors. FIG. 7 is a front view showing the case, and the structure of the housing will be described below with reference to FIGS. 4 to 6. 4 to 6, 25 "is a handle, 31 is a protrusion, 32 is a recess, and 33 is a pattern, and other reference numerals are the same as those in FIG.

As shown in FIG. 4 (b), the housing 21 of the amino acid analyzer according to one embodiment of the present invention has a top plate 22 having a protrusion 31 at the center portion on the front side, and a center portion on the front side. It is configured with two doors 24 and 24 'that open on both sides. The two doors 24 and 24 'are configured to open to the left and right by hinges (not shown) on the left and right side surface plates 23, respectively. When the two doors 24, 24 'are closed, as shown in FIG. 4 (a), the two doors 24, 2'
The portion 4'is in contact with is configured to form a recess 32 that is recessed inward of the housing, and the surface forming the recess 32 is patterned. This pattern may be planar or convex. The width of the recess 32 formed by the two doors 24 and 24 ′ described above is the same as the width of the protrusion 31 of the top plate, and the amount of depression of the recess 32 is the protrusion of the protrusion 31 of the top plate 22. It is made to be almost the same as the quantity.

The handles 25, 25 'are shown in FIG. 4 (a).
As shown in FIG. 7, the doors 24, 24 ′ are attached to the upper portions of the portions forming the recesses 32, and the outer surfaces thereof are configured to be in the shape of the protrusions of the protrusions 31 of the top plate 22. . The handles 25, 25 'are configured by forming a space on the upper inside of the handles 25, 25', as shown in FIG. 5 as a sectional view of the door joint.

In the above description, the two doors 2 are provided on the front side of the housing 21.
4 and 24 'are provided, the present invention is shown in FIG.
As shown in, the left door 24 may be divided into upper and lower parts. In this case, the lower door handle is
It may be provided on the upper part of the door in the same shape as described above.

As described above, the amino acid analyzer according to one embodiment of the present invention is provided with the two doors 24 and 24 'on the front side of the housing 21, so that one door can be used as an embodiment of the present invention. In the case of, it is possible to directly look at the autosampler 9 for loading the sample to be tested by opening the door 24 on the left side, and to load the sample from the loading port 9'of the sample to be tested, , The other door, the right door 2
By opening 4 ', it is possible to directly look at the reagent container and replace the reagent container. Also, the left door 2
When 4 is divided into upper and lower parts, it is possible to directly look at the autosampler 9 and to insert the sample just by opening the upper door.

In a normal operation, the sample is put in each time the analysis is performed, and the reagent containers 1 to 5 and 11-1 to 11-3 are exchanged once a day or once every several days, and the door 24 Is opened and closed more frequently than the door 24 '.

One prior art of the present invention focuses on the frequency of use of each part built in the housing 21, and separates the autosampler 9 and the reagent containers 1-5 and 11-1 to 11-3 into right and left. Because of the arrangement, the worker can open the standing door 24 on the side of the door 24 'when inserting the sample, so that the lateral width dimension of the door 24 or the door 24' should always be secured in front of the front of the housing 21 as its working area. It suffices, and the work area can be made smaller than in the case of a single door.

Further, in the embodiment of the present invention, since the recess 32 is formed at the joint between the two doors 24 and 24 'provided on the front surface side of the housing 21, the operator can open the door. When the operator approaches the housing 21, even if the operator's feet approach the surface where the left and right doors contact each other, it is possible to prevent the feet from hitting the door. Furthermore, two doors 24,
Since the recess 32 of the seam 24 'is formed with a pattern, even when a person's foot hits and the door is scratched, the scratch can be made inconspicuous. Also,
By providing the pattern, it is possible for the operator to easily recognize the central portion of the device, and it is possible to easily recognize the handle provided there.

Further, according to the embodiment of the present invention, since the protrusion portion 31 is provided on the front side of the top plate 22 of the housing 21 to form the protrusion space on the top plate, a personal computer or the like is mounted on the top plate 22. When this data processing device is mounted and used, this space can be utilized as a space for the operator to manually place.

Further, since the handles 25, 25 'attached to the doors 24, 24' are formed along the protrusions 31 of the top plate, it is easy for an operator to recognize the handles and the handles are mistakenly touched. It is possible to prevent hitting. Moreover, the unevenness of the front surface of the housing 21 due to the handle can be reduced, the entire device can be made to look simple and beautiful, and the cleanability can be improved.

Next, a usage pattern of the amino acid analyzer according to one embodiment of the present invention will be described with reference to the drawings.

FIG. 7 is a perspective view showing an example in which a personal computer as a data processing device and a printer as an output device are mounted and used on an amino acid analyzer according to an embodiment of the present invention, and FIG. 8 is a personal computer and printer. FIG. 9 is a perspective view showing an example in which and are mounted on another desk or the like, and FIG. 9 is a front view showing an example in which a plurality of amino acid analyzers according to an embodiment of the present invention are installed and used. 7 to 9, reference numeral 61 is a personal computer main body, 62 is a display, 63 is a keyboard, 64 is a mouse, 65 is a printer, and 71 is a desk.

In the example shown in FIG. 7, the personal computer body 6 is placed on the top plate 22 of the amino acid analyzer according to one embodiment of the present invention.
In this example, a personal computer as a data processing device including a display 62, a keyboard 63, and a mouse 64 and a printer 65 as an output device are mounted and used. In the case of this example, the apparatus can be installed in the most compact manner, and the amino acid analyzer can be installed and used in an extremely small floor space.

In the example shown in FIG. 8, a personal computer and a printer, which are placed on the top plate 22 in FIG. 7, are placed on a desk 71, which is separately installed, to constitute an amino acid analyzer according to an embodiment of the present invention. This is an example in which the housing 21 is used side by side. In the case of this example, the total installation area is increased as compared with the case of FIG. 7, but it becomes more convenient. It is also possible for two people to perform the work of using the data processing device and the work of exchanging the reagent inside the housing and inserting the sample.

In the example shown in FIG. 9, a plurality of amino acid analyzers according to the input / output of the present invention are provided side by side (3 in the case of the illustrated example.
In this example, one data processing device is provided for the whole. In the illustrated example, only the personal computer is placed on the top plate, but it goes without saying that the printers can be placed adjacent to each other. Further, as shown in FIG. 8, it is also possible to mount and use a personal computer or a printer on a separately installed desk or the like.

Further, in the example shown in FIG. 9, not only a plurality of amino acid analyzers are provided side by side, but also other analyzers and the like and amino acid analyzers may be provided side by side. And when only a plurality of amino acid analyzers are installed side by side, it is possible to display the machine number of the device that is performing the data processing on the screen of the display 62, and to compare the amino acid with other analyzers. When an analyzer is installed together, it is possible to display the name of the device that is performing data processing on the screen of the display 62. Further, a display lamp such as an LED may be provided in the housing of the device so that the device on which the data processing is performed can be viewed.

In the examples shown in FIG. 7 and FIG. 8 described above, it is possible to place only the personal computer on the top plate or desk and install the printer in another place. in this case,
It suffices to connect a cable between them.

Next, specific dimensions and workability on the top plate when a personal computer and a printer are placed on the amino acid analyzer according to one embodiment of the present invention will be described.

FIG. 10 is a top view for explaining a state in which only a personal computer is installed on the top plate, and FIG. 11 is a top view for explaining a state in which a personal computer and a printer are installed on the top plate.

As shown in FIGS. 10 and 11, the size of the top plate 22 excluding the protrusions 31 is approximately 900 mm × 650 mm.
Is. The width of the protrusion 31 on the front side is about 70 mm depending on the size of the handle and workability with a personal computer.
Optimally, it is set to 400 mm. Further, the sizes of the main body of the personal computer, the display, the keyboard, and the like that are placed are merely examples, and any size that can be placed on the top plate may be used.

In the example in which only the personal computer is installed on the top plate shown in FIG. 10, a lot of space is left on the right side of the operator. Therefore, by placing the mouse pad here, the keyboard and the mouse which are the input devices can be installed. It can be arranged conveniently. Also, in the example in which the personal computer and the printer are installed on the top plate shown in FIG. 11, the space for using the mouse is reduced, but a sufficient working space can be secured.

[0047]

As described above, according to the present invention, the size of the housing 21 in the left-right direction can be reduced, and the entire amino acid analyzer can be made compact. Further, according to the present invention, the remaining amount of the reagent in the reagent container can be easily confirmed, and the reagent container of the reagent whose remaining amount is insufficient can be easily replaced without moving another reagent container. be able to. Further, according to the present invention, by simply opening the door on the front side of the housing, the sample to be tested, which is a sample, is introduced from the front side, various reagents are confirmed, pump seals during maintenance and inspection, valve seal replacement, and separation. The column, reaction column, and ammonia filter column can be easily replaced.

Further, according to the present invention, the pipe through which the reagent flows can be shortened, and the worker can work in a comfortable posture in which the elbow is bent in a standing posture when the sample to be tested is introduced. It can be performed.

Further, according to the present invention, by opening one of the two front doors, it is possible to directly look at the autosampler for introducing the sample to be tested,
Further, by opening the other door, it is possible to directly look at the reagent container. Furthermore, by constructing one of the upper and lower doors by dividing it into two pieces, it is possible to directly look at the autosampler 9 and to insert the sample just by opening the upper door.

Further, according to the present invention, since the recess is formed at the joint between the two doors, when the operator approaches the housing to open the door, the operator's feet are left and right doors. Even if they approach the surface where they touch each other, it is possible to prevent the toes from hitting the door, and due to the pattern provided in the recess 32, when the toes of a person hit and the door is damaged. Moreover, the scratches can be made inconspicuous, the operator can easily recognize the central portion of the device, and the handle provided therein can be easily recognized.

Further, according to the present invention, since the protrusion is provided on the front side of the top plate of the housing to form the protrusion space on the top plate, a data processing device such as a personal computer is mounted on the top plate. When placed and used, this space can be utilized as a manual placement space for the operator.

Further, according to the present invention, since the handle attached to the door has a shape along the protrusion of the top plate, the operator can easily recognize the handle and accidentally hit the handle. It is possible to prevent this from happening, and to reduce the unevenness of the front surface of the housing due to the handle, so that the entire device can be made to look simple and beautiful, and the cleaning property can be improved.

[Brief description of drawings]

FIG. 1 is a block diagram showing a functional configuration example of an amino acid analyzer according to an embodiment of the present invention.

FIG. 2 is a front view and a perspective view showing a state in which each functional element of the amino acid analyzer described with reference to FIG. 1 is housed in a housing according to an embodiment of the present invention.

FIG. 3 is a diagram showing an arrangement of reagent containers.

FIG. 4 is a perspective view showing an outer shape of a housing and a top view showing a shape of a top plate.

FIG. 5 is a cross-sectional view illustrating the structure of a door handle.

FIG. 6 is a front view showing a form in which the left door is two.

FIG. 7 is a perspective view showing an example in which a personal computer as a data processing device and a printer as an output device are mounted and used on the amino acid analyzer according to one embodiment of the present invention.

FIG. 8 is a perspective view showing an example in which a personal computer and a printer are placed on different desks and used.

FIG. 9 is a front view showing an example in which a plurality of amino acid analyzers according to an embodiment of the present invention are installed and used.

FIG. 10 is a top view illustrating a state in which only a personal computer is installed on the top plate.

FIG. 11 is a top view illustrating a state in which a personal computer and a printer are installed on the top plate.

[Explanation of symbols]

1-5, 11-1-11-3 Reagent container 6,6 'valve group 7, 12 pumps 8 Ammonia filter column 9 Autosampler 10 Separation column 13 mixer 14 Reaction column 15 detector 16 Data processing device 17 heater 18 Waste liquid tank 4 ', 11-4 spare reagent container 21 housing 22 Top plate 23 Side plate 24, 24 'door 25, 25 ', 25 "handle 26, 27 partition 31 protrusion 32 recess 33 patterns 61 PC main body 62 display 63 keyboard 64 mice 65 Printer 71 desk

─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Isamu Takekoshi 1-280, Higashi Koikekubo, Kokubunji City, Tokyo Inside the Hitachi Ltd. Design Research Laboratory (72) Inventor Yoshio Fujii 882 Ichige, Hitachinaka City, Ibaraki Hitachi Ltd. Equipment Division (72) Inventor Hiroshi Satake 882 Ichimo, Hitachinaka City, Ibaraki Prefecture Hitachi, Ltd.Measurement Instruments Division, Hitachi, Ltd. (72) Masato Ito 882 Ichige, Hitachinaka City, Ibaraki Hitachi Instrument Measurement Division ( 58) Fields investigated (Int.Cl. ⁷ , DB name) G01N 33/68 G01N 35/02

Claims (10)

(57) [Claims] 1. A plurality of reagent containers for respectively storing a plurality of reagents, a pump for switching and sending a reagent selected from the plurality of reagents, a sampler for injecting a sample to be tested into the reagent, a separation column, and at least a separation column. At least one reagent container containing one reaction reagent; a reaction column;
And a detector, the amino acid analyzer configured by accommodating them in a single housing, the plurality of reagent containers
An amino acid analyzer characterized in that all and a sampler for injecting a test sample into a reagent are arranged so as to be exposed on the front side of the casing. 2. A plurality of reagent containers respectively storing a plurality of reagents, a switching valve for switching a reagent selected from the plurality of reagents, a pump for delivering the reagents, and a sampler for injecting a test sample into the reagents. A separation column, at least one reagent container containing at least one reaction reagent, a reaction column, a detector, and a waste liquid tank,
In the amino acid analyzer configured by accommodating them in a single housing, before Symbol sampler, a separation column, the reaction column, a reagent container, pump, waste tank, a switching valve wherein
An amino acid analyzer characterized in that it is arranged so as to be exposed on the front side of the housing . 3. The amino acid analyzer according to claim 2, wherein a plurality of pumps are arranged in parallel above the waste liquid tank. 4. A sampler is arranged laterally of the detector,
The amino acid analyzer according to claim 1, 2 or 3, wherein a reaction column is arranged on the other side. 5. The amino acid analyzer according to any one of claims 1 to 4, wherein a portion for introducing the sample to be tested into the sampler is arranged at a height of 800 mm to 1050 mm from an installation floor surface. . 6. The door according to claim 1, wherein two doors are provided only on the front side of the housing, and each door is provided at its left and right ends so as to be opened and closed by hinges.
The amino acid analyzer described. 7. The amino acid analyzer according to claim 6, wherein a portion where the two doors are in contact with each other forms a concave portion that is recessed inside the housing. 8. The amino acid analyzer according to claim 7, wherein the concave portion is provided with a smooth or convex pattern. 9. The housing is configured by providing a top plate on an upper portion thereof, and a width of 70 mm to 400 at a center portion on the front surface side of the top plate.
2. A projection of mm is formed.
9. The amino acid analyzer according to any one of 1 to 8. 10. The amino acid analyzer according to claim 9, wherein the handle portion provided on the door is formed to have an outer edge along the shape of the protrusion of the top plate.