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`Specification
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`A cap-shaped reagent vessel for analysis reagents
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`[Technical Field]
`The present invention relates to a cap-shaped reagent vessel for analysis reagents by which water quality
`analysis is simply performed.
`
`[Background Art]
`Many of analysis methods of an easy water quality analysis adopt a colorimetric analysis.
`As to the colorimetric analysis, since the characteristics are such that devices used are small and
`light, and also low priced, and the result can be seen visually as colors, and the measurement result is fast
`etc., colorimetric analysis is widely used in industry. However, in such colorimetric analysis, since
`chemical agents are used, it requires chemical knowledge, techniques, experience, etc.
`Moreover, since many types of chemical agents are used, not only more than a few types of
`reagents are required to be prepared, but also, and its storage is required. Further, in order to use reagents,
`weight meters such as scales, measuring cylinders etc. and capacity measuring instruments are necessary
`to fractionate required amounts to use reagents, and many beakers and flasks are necessary to churn and
`store them.
`Because of this, if one wants to perform on site water quality analysis, fractionation work of
`reagents etc. are very difficult, but also, depending on the situation, water quality analysis is not possible.
`As to the reagents for water quality analysis, there are liquid forms and powder forms. As to
`liquid reagents, there are different methods in which the reagent stored in glass bottles and plastic bottles
`is fractionated by an accompanying dropper, or fractionated by the dropper built into the glass or plastic
`bottles, or dripped by eye droppers.
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` On the other hand, as to powder reagents, there are some methods in which the reagent stored in
`glass or plastic vessels is fractionized by an accompanying light weight spoon, or depending on the case,
`as to the reagent that are packed into a bag with laminated packaging one at a time, or packed into soft
`plastic tube with both ends welded, the packaging is cut and the reagent is added to test water etc. Further,
`liquid or powder reagent is sometimes pre-sealed one at a time into the colorimetic cells made of
`transparent glass and transparent plastic.
`Furthermore, liquid or powder reagent is pre-sealed one time portion at a time into the
`coloriometic cell itself made of transparent glass and transparent plastics.
`By the way, if more than two types of liquid or powder reagents that cannot be mixed and stored
`are used, it is necessary to repackage and store each of them; if test water analysis is performed, each
`reagent must be inputted into the test water separately according to the use method. Hence, more the
`number of reagents, more complicated the analysis work, and if the handling method is different by each
`reagent, the user can get mixed up.
`On the other hand, one can think of inputting the reagent automatically by machines etc., and
`performing automatic measurements, but if there are many inputting reagents, the structure gets
`complicated, and also reagent storage methods are complicated in like fashion as above.
`By the way, there are some methods that were worked on storing the reagent that could not be
`mixed and stored separately, and mixing them simply when used. That is, this is not the purpose for
`handling reagents for analysis but for instance, glass ampule tightly sealed with liquid reagent is placed
`into the soft plastic tube with other reagents, and when in use, an impact is applied on the soft plastic to
`break the glass ampule inside to mix the reagents. Moreover, a method exists in which the substance that
`cannot be mixed and stored are placed into double bags separately and when used, a pressure is applied
`from outside, and the only bag insides is broke.
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` However, using such an operation method, it not only needs deliberate operations but also the
`operation method could be different for each use purpose, so the user gets confused about the operation
`procedures and methods.
`As described above, in performing the easy water quality analysis, in using the above colorimetric
`analysis, some characteristics were that the devices to be used were small and light and also low priced,
`and the result could be visually seen as colors and measurement result was fast, but due to the reasons that
`preparation and storage of reagent to be used and handling of the reagent were troublesome etc., the flaw
`was that it needed the sufficient chemical knowledge and experience etc. to analyze water quality.
`
`[Disclosure of the invention]
` The first technical challenge of the present invention is to provide a cap-shaped reagent vessel for
`analysis reagents that can perform safe and accurate water quality analysis by a simple operation even
`without chemical knowledge.
` The second technical challenge of the present invention is to simplify the production processes.
`The solution method of the first technical challenge of the present invention comprises, as written in the
`scope 1 of the claims, a transparent vessel main body which enables inputting the test water of a specified
`amount from the opening; a lid body which can be mounted from the aforementioned opening unit side
`of the vessel main body; a reagent storage vessel which houses a specified reagent; a cutter which is
`pushed into the aforementioned lid body, depending on mounting amount of the aforementioned lid body
`with respect to the aforementioned vessel main body, and breaks through the aforementioned reagent
`storage vessel loaded into the aforementioned lid body so that the aforementioned reagent is discharged
`into the aforementioned vessel main body.
` According to this solution method, after inputting a test water of a specified amount into the
`transparent vessel main body, when the lid body which holds the reagent storage vessel housed with a
`specified reagent is mounted from the opening of the vessel main body inside thereof, the cutter is moved
`depending on the tightening amount, and the reagent storage vessel is broken through thus, the reagent
`inside the reagent storage vessel is discharged into the vessel main body.
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` Hence, when test water is analyzed, the lid body is tightened into the vessel main body with test water
`inputted, thereby, the reagent can be mixed into the test water, hence even with no chemical knowledge,
`safe and accurate water quality analysis is performed by a simple operation.
` Moreover, other solution method of the first technical challenge of the present invention is that as
`described in the scope 2 of the claims, the aforementioned lid body is mounted by tightening from the
`aforementioned opening side of the aforementioned vessel main body, and the aforementioned cutter is
`pushed into the aforementioned lid body depending on the tightening amount of the aforementioned lid
`body with respect to the aforementioned vessel main body.
` According to the solution method, depending on the tightening amount of the lid body with respect to
`the vessel main body, the cutter is pushed into the lid body; hence this has the same effects as the scope 1
`of the claims.
` Moreover, according to the other solution method of the first technical challenge of the present
`invention, as described in the scope 3 of the claims, the aforementioned lid body is mounted by being
`pushed in from the aforementioned opening side of the aforementioned vessel main body, and the
`aforementioned cutter is pushed into the aforementioned lid body depending on the push amount of the
`aforementioned lid body with respect to the aforementioned vessel main body.
` According to the solution method, since the cutter is pushed into the lid body depending on the
`amount of push of the lid body with respect to the vessel main body, this has the same effects as the scope
`1 of the claims.
` Moreover, according to the other solution method of the first technical challenge of the present
`invention, as described in the scope 4 of the claims, a plural number of reagent storage vessels which
`store mutually different reagents is housed inside the aforementioned lid body along the moving direction
`of the aforementioned cutter, so depending on the mounting, tightening and push of the aforementioned
`lid body, the aforementioned plural number reagent storage vessels are broken thru sequentially by the
`aforementioned cutter.
` According to this solution method, a plural number of reagent storage vessels are housed on the lid
`body along the moving direction of the cutter and when handling the reagent storage vessel of analysis
`reagent with the test water,
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`The lid body is mounted, tightened or pushed to the vessel main body with test water inputted, thus each
`reagent is mixed with test water sequentially.
` Moreover, according to the other solution method of the first technical challenge of the present
`invention, as described in the scope 5 of the claims, a packing was mounted on the lower surface side of
`the aforementioned cutter, and due to the mounting, tightening or push of the aforementioned lid body
`with respect to the aforementioned vessel main body, the opening edge part of the aforementioned vessel
`main body abuts the aforementioned packing, and the aforementioned vessel main body and the
`aforementioned lid body inside are tightly sealed.
` According to the solution method, due to the tightening of the lid body, the packing mounted on the
`lower surface side of the cutter abuts the opening edge part of the vessel main body, thereby, the vessel
`main body and the lid body inside are tightly sealed, hence even when test water and reagent are churched,
`these test water and reagent do not leak outside.
` Moreover, according to the other solution method of the first technical challenge of the present
`invention, as described in the scope 6 of the claims, a soft material protector is intervened between the
`aforementioned reagent storage vessel and the aforementioned cutter, thus the aforementioned reagent
`storage vessel is protected so that it is not damaged carelessly by the aforementioned cutter.
` According to this solution method, due to the protector of a soft material held between the reagent
`storage vessel and the cutter, the contact of the reagent storage vessel and the cutter is designed to be
`interrupted, so when test water is not analyzed, the reagent storage vessel is not broken through by a
`cutter by mistake, thus the reagent storage vessel is surely saved.
` According to the other solution method of the first technical challenge of the present invention, as
`described in the scope 7 of the claims, a spacer to promote the movement halt of the aforementioned
`cutter accompanied by mounting, tightening and pushing-in of the aforementioned lid body is intervened
`between aforementioned reagent storage vessels, hence a moderation is provided for breaking thru of the
`aforementioned reagent storage vessels by the aforementioned cutter.
` According to the solution method, a spacer is intervened between reagent storage vessels, to provide
`moderation for breaking thru of the aforementioned reagent storage vessels by the aforementioned cutter,
`hence
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`When time differences, etc. is necessary for inputting reagents, tightening of the lid body can be adjusted
`by a sense of moderation.
`According to the other solution method of the first technical challenge of the present invention, as
`described in the scope 8 of the claims, the aforementioned cutter comprises a disk-shaped cutter bottom
`part with a plural number of reagent passage holes; a plural number of slits which protrude in the center
`of the cutter bottom part, and is enabled to communicate with the aforementioned reagent passage hole on
`the side surface; and also, crescent moon-shaped cutter blade edge at the front end.
` According to the solution method, the reagent inside the reagent storage vessel broken thru by cutter
`blade edge leaks out to the outside of reagent storage vessel along the plural number of slits formed on the
`side surface of the cutter cylinder part, and by collapsing and churning the vessel main body in this
`condition, the test water and reagent inside the vessel main body get mixed up via the plural number of
`reagent passage holes at the cutter bottom part.
` According to the other solution method of the second technical challenge of the present invention, as
`described in the scope 9 of the claims, the aforementioned cutter comprises: a disk-shaped cutter bottom
`part; a crown-shaped cutter blade edge formed by raise by cuts at the center of the cutter bottom part;
`reagent passage hole formed in the center.
` According to the solution method, since the cutter blade edge is cut and raised in the center of the
`cutter bottom part, and at the same time, reagent passage holes are formed, the production process is
`simplified.
` According to the other solution method of the second technical challenge of the present invention, as
`described in the scope 10 of the claims, the aforementioned cutter blade edge comprises the plural number
`of blade pieces where the center of the cutter bottom was cut and raised.
` According to this solution method, the cutter blade edge is formed by cutting and raising the center
`part of the cutter bottom part, and in the same time, reagent passage holes are formed, hence this plays the
`same effects as those in the scope 9 of the claims.
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` Moreover, according to the other solution method of the second technical challenge of the present
`invention, as described in the scope 11 of the claims, bending - processed flange unit is provided at the
`periphery edge part of the aforementioned cutter bottom part.
` According to the solution method, by providing a bending processed flange part at the periphery edge
`of the cutter bottom, rigidity of the cutter bottom part was enhanced, this enabled the plate thickness of
`the cutter bottom part to be thinner, and thus cost reduction was attempted along with simplification of
`production process.
` [Brief explanation of drawing]
`Fig. 1 is a cross section drawing showing an embodiment of the cap-shaped reagent vessel for analysis
`reagents of the present invention. Fig. 2 is a perspective drawing showing a protector of Fig. 1. Fig. 3 is a
`perspective drawing showing the cutter of Fig. 1. Fig. 4 is a cross section showing other embodiment
`when the cutter configuration in Fig. 1 is changed. Fig. 5 is a perspective drawing showing the cutter in
`Fig. 4. Fig. 6 is a cross section showing the cutter in Fig. 4. Fig. 7 is a perspective drawing showing other
`embodiment when the configuration of the reagent storage vessel of the analysis reagent in Fig. 1 is
`changed.
`[Best main body of the invention]
`The following explains the detail of the embodiment of the present invention based on the drawings.
`Fig. 1 thru Fig. 3 shows one embodiment of the cap-shaped reagent vessel for analysis reagents of the
`present invention.
` As shown in these drawings, as to the reagent vessel, as the female screw part 2 of the cap body 3 is
`screwed into screw 19 of transparent vessel main body 15 to be colorimetric cells, the cap body 3 is free
`to be fitted into the vessel main body 15.
` In the internal center of the cap body 3, a groove 1 is formed into which the crescent moon-shaped
`cutter blade edge 9 of the cutter 8A later mentioned which is pushed up by screwing the cap body 3 is
`fitted.
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` Inside the cap body 3 are housed chemical resistant film vessels 4 and 5 which house different types
`of reagents. Moreover, as to the housing state of these film vessels 4 and 5, it is designed to be along the
`moving direction of cutter 8A.
` Here, as to each film vessels 4 and 5 it is good if they have high barrier resistance (moisture, acid) and
`high chemical resistance, and this comprises multi-layered/ composite structure laminated packaging
`material.
` Specifically, from the outside in order, there is a 4-layer structure of polyester (12 µ) – polyethylene
`(15 µ) – aluminum (7 µ) – polyethylene (25 µ).
` Further, polypropylene and PET etc. can be used.
` In the lower part of the film vessel 5 is provided a protector 7 made of soft material such as paper and
`hard plastic cutter 8A.
` The protector 7 is used to prevent careless breaking of film vessel 4, 5 by a cutter 8A, and as shown in
`Fig. 2, it is configured such that in the center of disk-shaped protector body 7a, protector hole 13 is
`formed and also, a bent piece 18 is provided in the periphery edge part of the protector main body 7a.
`Then, as described later, when the cutter 8A pushes up the protector main body 7a, the protector main
`body 7a is designed to be bent from the crease 18a of the bent piece 18.
` The cutter 8A, as shown in Fig. 3, comprises a disk-shaped cutter bottom part 8a. On the cutter bottom
`part 8a, a plural number of reagent passage holes 10 are provided, and is designed so that reagent inside
`film vessels 4 and 5 and test water inside vessel main body 15, while moving through these reagent
`passage holes 10, get mixed up.
` Moreover, on the lower surface side of cutter bottom part 8a, a doughnut-shaped packing 11 is
`provided that comprises a plural number of protrusions 12 and whose diameter is somewhat larger than
`cutter bottom part 8a.
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`Then, it is designed such that when the cutter 8A is housed into the cap body 3, as the protrusion 12 of the
`packing 11 thrusts into the cap body 3, falling out of cutter 8A are prevented. Further, the center part of
`the cutter bottom part 8a has a crescent moon-shaped cutter blade 9 at the front edge, and also on the side
`is provided a cutter tube 8 with a plural number of slits 14.
` On the other hand, a scale 16 is formed on transparent vessel main body 15, and designed to be the
`standard position of the amount of test water to be taken into the vessel main body 15. Moreover, opening
`edge part of the screw 19 of vessel main body 15 is designed to be a pedestal 17 of the above described
`packing 11, and when the pedestal 17 abuts the lower surface side of the packing 11 by tightening the cap
`body 3, the space between pedestal 17 and packing 11 is tightly sealed, liquid is prevented from leaking
`outside of the vessel main body 15.
` Following this, the analysis method by the cap-shaped reagent vessel for analysis reagents with such
`configuration is explained. Moreover, in the following analysis method, a case of detecting phosphoric
`3-) of test water is explained.
`acid (PO4
` That is, the test water is poured up to the position of scale 16 of the vessel main body 15 to be a
`colorimetric cell. In this case the amount of test water is about 25 ml.
` In this condition, the vessel main body 15 is put into the cell box of a photoelectric photometer not
`shown in Fig. that detects the concentration of test water by a specified wave length light, and zero
`adjustment of photoelectric photo meter is done.
` Next, vessel main body 15 is taken out from the photoelectric photo meter, and a cap body 3 is
`mounted to the screw 19 of vessel main body 15. At this time, in the film vessel 4 of cap body 3 is stored
`powder reagents that contain ascorbic acid and 10% diluted sulfuric acid that contains ammonium
`molybdate.
`Then when the cap body 3 is tightened while the female screw part 2 of the cap body 3 engages the screw
`19 of vessel main body 15,
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`First while the pedestal 17 of opening edge part of screw 19 of vessel main body 15 is abutting on the
`lower surface side of packing 1, the cutter 8A is pushed into the cap body 3. Accompanied by this, the
`bent pieces 18 of the protector main body 7a is bent from the crease 18a part accompanied with the
`movement of cutter 8A.
` When the cap body 3 is tightened further from this condition, a crescent moon-shaped cutter blade
`edge 9 of the cutter 8A breaks thru the film vessel 5. Thereby, 10% diluted sulfuric acid that contains
`ammonium molybdate housed inside the film vessel 5 leaks out outside of film vessel 5 along the plural
`number of slits 14 formed on the side of cutter tube 8 of the cutter 8A.
` If the cap body 3 is further tightened from this condition, the cutter blade edge 9 of the cutter 8A
`breaks through the film vessel 4. Thereby, powder reagent that contains ascorbic acid leaks from film
`vessel 4. If the cap body 3 is further tightened from this condition, the crescent moon-shaped cutter blade
`edge 9 of the cutter 8A fits into the groove 1 and the tightening of cap body 3 stops.
` In this condition, if the vessel main body 15 is collapsed and churned, and the reagent is sufficiently
`mixed into the test water, this reacts with PO4
`3- contained in the test water, and this presents the so called
`molybdenum blue color. The reagent is sufficiently mixed with test water, and after leaving it alone for 5
`minutes, vessel main body 15 is set again to the photoelectric photo meter. Thereby, concentration of test
`water is displayed by mg/l.
` Like this, in this embodiment, after specified amount of test water is poured into the transparent vessel
`main body 15, the cap body 3 which holds film vessels 4 and 5 with specified reagent stored is mounted
`by tightening inside from the opening of vessel main body 15, the cutter 8A is moved depending on the
`tightening amount a, and film vessels 4 and 5 are broken thru and the reagent inside film vessels 4 and 5
`is discharged into the vessel main body 15.
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`Hence, when test water is analyzed, by tightening the cap body 3 into the vessel main body 15 with
`test water poured in, the reagent can be mixed into the test water, hence, without chemical knowledge,
`safe and accurate water quality analysis can be performed using a simple operation.
` Moreover, for one-time analysis of test water, one cap body 3 is fine, and it is not necessary to prepare
`a separate vessel that houses liquid reagent etc.
` Further, since the vessel main body 15 to be colorimetric cells can be shared with respect to all test
`water, the usage can be made as often as you want after washing, and this is very economical.
` Further also, as pedestal 17 abuts the lower surface part of packing 11, this prevent s the liquid from
`leaking outside of the vessel main body 15, so after finishing water quality analysis, even when disposal
`of the liquid or washing of vessel main body 15 and cap body 3 are not possible, one can take them back
`while tightly sealed with lid on.
` Additionally, when the cap-shaped reagent vessel of such analysis reagent is used for an automatic
`measurement device, since the vessel itself has the same shape, the mechanism can be simplified, and also
`it is not necessary to provide the automatic measurement device itself with a storage function of the vessel,
`hence the device can be miniaturized.
` Moreover, in the above embodiment, a case was explained when two pieces of film vessels 4 and 5
`was loaded into the cap body 3, this is not limited to this, and when one film vessel 4 or 5 was loaded, test
`water can be inspected.
` That is, taking an example of nickels measurement, in the same manner as above, test water is input up
`to the scale 16 position of the vessel main body 15 to be colorimetric cells. In this condition, the vessel
`main body 15 is placed into the cell box of the photoelectric photo meter set to the specified wave length,
`the photoelectric photo meter is set to zero adjustment in the same manner as above.
` Next, vessel main body 15 is taken out from the photoelectric photo meter, the cap body 3 which is
`built-in with
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`reagent showing Ni is mounted to the vessel main body 15 in the same manner as above and lid body 3 is
`tightened. At this time, in the same manner as above, while the pedestal 17 of the opening edge part of
`screw 19 of vessel main body 15 abuts the lower surface side of packing 11, the cutter 8A is pushed into
`eth lid body 3. Accompanied by this, the bent pieces 18 of the protector main body 7a is bent from the
`crease 18a with the movement of cutter 8A.
` When lid body 3 is further tightened from this condition, the crescent-shaped cutter blade edge 9 of the
`cutter 8A break thru film vessels 4, 5 first. Thereby, nickels coloring reagent (powder reagent with
`dimethyl gloyoxime as the main ingredient) housed inside film vessels 4, 5 leaks outside of film vessels 4,
`5 along a plural number of slits 4 formed on the side surface of cutter tube 8 of the cutter 8A. If lid body
`3 is tightened more from this condition, as the crescent-shaped cutter blade edge 9 of the cutter 8A fits
`into the groove 1, tightening of the lid body 3 is stopped.
`At this time, as described, the pedestal 17 of the opening edge part of screw 19 of vessel main body 15
`abuts the lower surface part of packing 11, and between the pedestals 17 and packing 11 is tightly closed,
`thus liquid is prevented from leaking outside of vessel main body 15. In this condition, the vessel main
`body 15 is collapsed and churned, and after the reagent is sufficiently mixed into test water, they are left
`alone for 10 minutes.
` At this time, if the reagent sealed is powder, since it is possible that this can remain in the film vessel 4
`or film vessel 5, churning by collapsing the vessel main body 15 is done sufficiently.
` Then, after 10 minutes, if it is reset to the photoelectric photo meter, concentration can be read by mg/l
`unit.
` Moreover, in this embodiment, a case was explained in which by moving cutter 8A accompanied by
`tightening of lid body 3, the film vessel 4 and/or 5 is designed to be broken thru simply, but this
`embodiment is not limited to this, for instance this can be designed so that a spacer can be intervened
`between the film vessel 4 and 5, moderation can be provided for movement of the cutter 8A.
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` That is, when more than 2 types of reagents are inputted, sometimes the reaction time of the first
`reagent inputted are needed, and in this case, depending on the moderation feeling of the movement of the
`cutter 8A by spacer, adding and decreasing the tightening the lid main body 3 as a feeling can be known,
`thus anxiety of breaking thru the film vessel 4 and or 5 that houses the next reagents during the previous
`reagent reaction is gone.
` In Fig. 4 thru Fig. 5 are shown the other embodiment when the configuration of the cutter 8A
`described above is changed. Moreover, in the Fig explained in the following, the same symbols are
`added for the parts that are shared with Fig. 1 thru Fig. 3, and duplication explanations are omitted.
` The cutter 20 shown in these figures is made of 0.15mm hard stainless steel. In the center part of the
`cutter bottom part 21 of the cutter 20 is provided a crown shaped cutter blade edge 22. This cutter blade
`22 is made of 4 pieces of blade pieces 23 whose center part of the cutter bottom part 21 is cut and raised
`upward, and inside of these 4 blade pieces 23 is provided reagent passage holes 24 that are formed at
`same time as the raise by cutting.
` In the periphery of the cutter bottom part 21, is provided a flange 25 which is bent downward. It is
`designed such that rigidity of cutter bottom part 21 is enhanced by the flange 25.
` The packing 11 is positioned on the lower surface side of the cutter 20 whose diameter is somewhat
`larger than the cutter bottom part 21, and in its center, communication hole 13 that corresponds with the
`reagent passage holes 24 described above is formed, and in its periphery, protrusion 12 is set up.
` The cap shaped reagent vessel for analysis reagents with such a configuration is used as follows.
` That is, when the lid body 3 is tightened while the female screw part of the lid body 3 is engaged with
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`the screw part 19 of the vessel main body 15, in the same way as above, while the pedestal 17 of the
`vessel main body 15 abuts the lower surface side of the packing 11, the cutter 20 is pushed into the lid
`body 3. Accompanied by this, the bent piece 18 of the protector main body 7a, along with the movement
`of cutter 8A, gets bent from the crease 18a part.
` When the lid body 3 is further tightened from this condition, the cutter blade 22 of the cutter 20 first
`breaks thru the film vessel 5. At this time, since cutter blade edge 22 comprises 4 pieces of blade pieces
`23, the break thru of the film vessel 5 is easily and surely done.
` By this, 10% diluted phosphoric acid that contains ammonium molybdate housed inside the film vessel
`5 above described moves to the vessel main body 15 sides thru the reagent passage holes 24 formed at the
`center part of the cutter 20.
` When lid body 3 is furthermore tightened form this condition, the cutter blade 22 of the cutter 20
`breaks thru the film vessel 4. At this time, since cutter blade edge 22 comprises 4 blade pieces 23, the
`break thru of the film vessel 5 is easily and surely done.
` By this, powder reagent that contains ascorbic acid leaks from the film vessel 4 described above.
`When the lid body 3 is further tightened from this condition, as the cutter blade 22 of the cutter 20 is fit
`into the groove 1, the tightening of the lid body 3 stops.
` In these conditions, as described above, if vessel main body 15 is collapsed and churned, and reagent is
`3- contained in test water, and this presents a
`sufficiently mixed into test water, it reacts with PO4
`so called molybdenum blue. And reagent is sufficiently mixed into test water and leaving this alone for 5
`minutes, vessel main body 15 is reset to the photoelectric photo meter then, concentration of the test water
`is displayed by mg/l.
`In this manner, in this embodiment, because the tip of the cutter blade 22 is comprised of plural blades 23
`formed by cutting open the central part of the cutter basal means 21, not only is the manufacture thereof
`simple, because there are plural blade tips of the strong blade piece 23, it is easy to perforate through the
`film vessels 4 and 5, in addition to enabling the secure performance thereof.
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`Moreover, in this embodiment, by providing a flanged means 25 which is fold processed on the outer
`peripheral edge means of the cutter basal means 21, because the brittleness of the cutter basal means 21
`can be increased, the sheet thickness of the cutter basal means 21 can be made thinner in a contrivance at
`simplifying the manufacturing processes thereof as well as reducing the cost thereof.
`Note that in each of the embodiments described above, an explanation was provided of the situation
`where the cutters 8A and 20 are pushed into the interior means of the cap body 3 by means of pressing
`hard the female screw part 2 of the cap body 3 into the biting-in state to the cap body 3 to the screw
`means 19 of the vessel main body 15, not limited to this embodiment, for example, as illustrated in figure
`7, by pressing in the cap body 3 to the vessel main body 15 side, the cutters 8A and 20 can be to be
`pushed into the interior means of the cap body 3.
`That is, a guide protrusion 31 having elasticity is provided on the upper outer periphery of the