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`PCT/JP97/02472
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`l
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`Specification
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`A cap-shaped reagent vessel for analysis reagents
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`[Technical Field]
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`The present invention relates to a cap-shaped reagent vessel for analysis reagents by which water quality
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`analysis is simply performed.
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`[Background Art]
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`Many of analysis methods of an easy water quality analysis adopt a colorimetric analysis.
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`As to the colorimetric analysis, since the characteristics are such that devices used are small and
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`light, and also low priced, and the result can be seen visually as colors, and the measurement result is fast
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`etc., colorimetric analysis is widely used in industry. However,
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`in such colorimetric analysis, since
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`chemical agents are used, it requires chemical knowledge, techniques, experience, etc.
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`Moreover, since many types of chemical agents are used, not only more than a few types of
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`reagents are required to be prepared, but also, and its storage is required. Further, in order to use reagents,
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`weight meters such as scales, measuring cylinders etc. and capacity measuring instruments are necessary
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`to fractionate required amounts to use reagents, and many beakers and flasks are necessary to chum and
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`store them.
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`Because of this, if one wants to perform on site water quality analysis, fractionation work of
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`reagents etc. are very difficult, but also, depending on the situation, water quality analysis is not possible.
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`As to the reagents for water quality analysis, there are liquid forms and powder forms. As to
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`liquid reagents, there are different methods in which the reagent stored in glass bottles and plastic bottles
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`is fractionated by an accompanying dropper, or fractionated by the dropper built into the glass or plastic
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`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
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`glass or plastic vessels is fractionized by an accompanying light weight spoon, or depending on the case,
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`as to the reagent that are packed into a bag with laminated packaging one at a time, or packed into soft
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`plastic tube with both ends welded, the packaging is cut and the reagent is added to test water etc. Further,
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`liquid or powder reagent
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`is sometimes pre-sealed one at a time into the colorimetic cells made of
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`transparent glass and transparent plastic.
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`Furthermore,
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`liquid or powder reagent
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`is pre-sealed one time portion at a time into the
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`coloriometic cell itself made of transparent glass and transparent plastics.
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`By the way, if more than two types of liquid or powder reagents that cannot be mixed and stored
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`are used, it is necessary to repackage and store each of them; if test water analysis is perfonned, each
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`reagent must be inputted into the test water separately according to the use method. Hence, more the
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`number of reagents, more complicated the analysis work, and if the handling method is different by each
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`reagent, the user can get mixed up.
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`On the other hand, one can think of inputting the reagent automatically by machines etc., and
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`perfonning automatic measurements, but
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`if there are many inputting reagents,
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`the structure gets
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`complicated, and also reagent storage methods are complicated in like fashion as above.
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`By the way, there are some methods that were worked on storing the reagent that could not be
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`mixed and stored separately, and mixing them simply when used. That is, this is not the purpose for
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`handling reagents for analysis but for instance, glass ampule tightly sealed with liquid reagent is placed
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`into the soft plastic tube with other reagents, and when in use, an impact is applied on the soft plastic to
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`break the glass ampule inside to mix the reagents. Moreover, a method exists in which the substance that
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`cannot be mixed and stored are placed into double bags separately and when used, a pressure is applied
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`from outside, and the only bag insides is broke.
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`However, using such an operation method,
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`it not only needs deliberate operations but also the
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`operation method could be different for each use purpose, so the user gets confused about the operation
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`procedures and methods.
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`As described above, in performing the easy water quality analysis, in using the above colorimetric
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`analysis, some characteristics were that the devices to be used were small and light and also low priced,
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`and the result could be visually seen as colors and measurement result was fast, but due to the reasons that
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`preparation and storage of reagent to be used and handling of the reagent were troublesome etc.,
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`the flaw
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`was that it needed the sufficient chemical knowledge and experience etc. to analyze water quality.
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`[Disclosure of the invention]
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`The first technical challenge of the present invention is to provide a cap-shaped reagent vessel for
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`analysis reagents that can perfonn safe and accurate water quality analysis by a simple operation even
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`without chemical knowledge.
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`The second technical challenge of the present invention is to simplify the production processes.
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`The solution method of the first technical challenge of the present invention comprises, as written in the
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`scope l of the claims, a transparent vessel main body which enables inputting the test water of a specified
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`amount from the opening; a lid body which can be mounted from the aforementioned opening unit side
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`of the vessel main body; a reagent storage vessel which houses a specified reagent; a cutter which is
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`pushed into the aforementioned lid body, depending on mounting amount of the aforementioned lid body
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`with respect to the aforementioned vessel main body,
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`and breaks through the aforementioned reagent
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`storage vessel loaded into the aforementioned lid body so that the aforementioned reagent is discharged
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`into the aforementioned vessel main body.
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`According to this solution method, after inputting a test water of a specified amount
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`into the
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`transparent vessel main body,_when the lid body which holds the reagent storage vessel housed with a
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`specified reagent is mounted from the opening of the vessel main body inside thereof, the cutter is moved
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`depending on the tightening amount, and the reagent storage vessel is broken through thus, the reagent
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`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
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`inputted, thereby, the reagent can be mixed into the test water, hence even with no chemical knowledge,
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`safe and accurate water quality analysis is performed by a simple operation.
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`Moreover, other solution method of the first technical challenge of the present invention is that as
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`described in the scope 2 of the claims, the aforementioned lid body is mounted by tightening from the
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`aforementioned opening side of the aforementioned vessel main body, and the aforementioned cutter is
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`pushed into the aforementioned lid body depending on the tightening amount of the aforementioned lid
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`body with respect to the aforementioned vessel main body.
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`According to the solution method, depending on the tightening amount of the lid body with respect to
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`the vessel main body, the cutter is pushed into the lid body; hence this has the same effects as the scope l
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`of the claims.
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`Moreover, according to the other solution method of the first technical challenge of the present
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`invention, as described in the scope 3 of the claims, the aforementioned lid body is mounted by being
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`pushed in from the aforementioned opening side of the aforementioned vessel main body, and the
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`aforementioned cutter is pushed into the aforementioned lid body depending on the push amount of the
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`aforementioned lid body with respect to the aforementioned vessel main body.
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`According to the solution method, since the cutter is pushed into the lid body depending on the
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`amount of push of the lid body with respect to the vessel main body, this has the same effects as the scope
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`l of the claims.
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`Moreover, according to the other solution method of the first technical challenge of the present
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`invention, as described in the scope 4 of the claims, a plural number of reagent storage vessels which
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`store mutually different reagents is housed inside the aforementioned lid body along the moving direction
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`of the aforementioned cutter, so depending on the mounting, tightening and push of the aforementioned
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`lid body, the aforementioned plural number reagent storage vessels are broken thru sequentially by the
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`aforementioned cutter.
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`According to this solution method, a plural number of reagent storage vessels are housed on the lid
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`body along the moving direction of the cutter and when handling the reagent storage vessel of analysis
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`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
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`reagent is mixed with test water sequentially.
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`Moreover, according to the other solution method of the first technical challenge of the present
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`invention, as described in the scope 5 of the claims, a packing was mounted on the lower surface side of
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`the aforementioned cutter, and due to the mounting, tightening or push of the aforementioned lid body
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`with respect to the aforementioned vessel main body, the opening edge part of the aforementioned vessel
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`main body abuts the aforementioned packing, and the aforementioned vessel main body and the
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`aforementioned lid body inside are tightly sealed.
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`According to the solution method, due to the tightening of the lid body, the packing mounted on the
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`lower surface side of the cutter abuts the opening edge part of the vessel main body, thereby, the vessel
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`main body and the lid body inside are tightly sealed, hence even when test water and reagent are churched,
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`these test water and reagent do not leak outside.
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`Moreover, according to the other solution method of the first technical challenge of the present
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`invention, as described in the scope 6 of the claims, a soft material protector is intervened between the
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`aforementioned reagent storage vessel and the aforementioned cutter, thus the aforementioned reagent
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`storage vessel is protected so that it is not damaged carelessly by the aforementioned cutter.
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`According to this solution method, due to the protector of a soft material held between the reagent
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`storage vessel and the cutter, the contact of the reagent storage vessel and the cutter is designed to be
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`interrupted, so when test water is not analyzed, the reagent storage vessel is not broken through by a
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`cutter by mistake, thus the reagent storage vessel is surely saved.
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`According to the other solution method of the first technical challenge of the present invention, as
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`described in the scope 7 of the claims, a spacer to promote the movement halt of the aforementioned
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`cutter accompanied by mounting, tightening and pushing-in of the aforementioned lid body is intervened
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`between aforementioned reagent storage vessels, hence a moderation is provided for breaking thru of the
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`aforementioned reagent storage vessels by the aforementioned cutter.
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`According to the solution method, a spacer is intervened between reagent storage vessels, to provide
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`moderation for breaking thru of the aforementioned reagent storage vessels by the aforementioned cutter,
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`hence
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`When time differences, etc. is necessary for inputting reagents, tightening of the lid body can be adjusted
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`by a sense of moderation.
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`According to the other solution method of the first technical challenge of the present invention, as
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`described in the scope 8 of the claims, the aforementioned cutter comprises a disk-shaped cutter bottom
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`part with a plural number of reagent passage holes; a plural number of slits which protrude in the center
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`of the cutter bottom part, and is enabled to communicate with the aforementioned reagent passage hole on
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`the side surface; and also, crescent moon-shaped cutter blade edge at the front end.
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`According to the solution method, the reagent inside the reagent storage vessel broken thru by cutter
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`blade edge leaks out to the outside of reagent storage vessel along the plural number of slits formed on the
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`side surface of the cutter cylinder part, and by collapsing and churning the vessel main body in this
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`condition, the test water and reagent inside the vessel main body get mixed up via the plural number of
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`reagent passage holes at the cutter bottom part.
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`According to the other solution method of the second technical challenge of the present invention, as
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`described in the scope 9 of the claims, the aforementioned cutter comprises: a disk-shaped cutter bottom
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`part; a crown-shaped cutter blade edge formed by raise by cuts at the center of the cutter bottom part;
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`reagent passage hole formed in the center.
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`According to the solution method, since the cutter blade edge is cut and raised in the center of the
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`cutter bottom part, and at the same time, reagent passage holes are formed, the production process is
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`simplified.
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`According to the other solution method of the second technical challenge of the present invention, as
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`described in the scope 10 of the claims, the aforementioned cutter blade edge comprises the plural number
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`of blade pieces where the center of the cutter bottom was cut and raised.
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`According to this solution method, the cutter blade edge is fonned by cutting and raising the center
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`part of the cutter bottom part, and in the same time, reagent passage holes are formed, hence this plays the
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`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
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`invention, as described in the scope ll of the claims, bending - processed flange unit is provided at the
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`periphery edge part of the aforementioned cutter bottom part.
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`According to the solution method, by providing a bending processed flange part at the periphery edge
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`of the cutter bottom, rigidity of the cutter bottom part was enhanced, this enabled the plate thickness of
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`the cutter bottom part to be thinner, and thus cost reduction was attempted along with simplification of
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`production process.
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`[Brief explanation of drawing]
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`Fig.
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`1
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`is a cross section drawing showing an embodiment of the cap-shaped reagent vessel for analysis
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`reagents of the present invention. Fig. 2 is a perspective drawing showing a protector of Fig. 1. Fig. 3 is a
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`perspective drawing showing the cutter of Fig. 1. Fig. 4 is a cross section showing other embodiment
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`when the cutter configuration in Fig.
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`1
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`is changed. Fig. 5 is a perspective drawing showing the cutter in
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`Fig. 4. Fig. 6 is a cross section showing the cutter in Fig. 4. Fig. 7 is a perspective drawing showing other
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`embodiment when the configuration of the reagent storage vessel of the analysis reagent in Fig.
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`1
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`is
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`changed.
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`[Best main body of the invention]
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`The following explains the detail of the embodiment of the present invention based on the drawings.
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`Fig.
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`1 thru Fig. 3 shows one embodiment of the cap-shaped reagent vessel for analysis reagents of the
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`present invention.
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`As shown in these drawings, as to the reagent vessel, as the female screw part 2 of the cap body 3 is
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`screwed into screw 19 of transparent vessel main body 15 to be colorimetric cells, the cap body 3 is free
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`to be fitted into the vessel main body 15.
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`In the internal center of the cap body 3, a groove 1
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`is formed into which the crescent moon-shaped
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`cutter blade edge 9 of the cutter 8A later mentioned which is pushed up by screwing the cap body 3 is
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`fitted.
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`Inside the cap body 3 are housed chemical resistant film vessels 4 and 5 which house different types
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`of reagents. Moreover, as to the housing state of these film vessels 4 and 5, it is designed to be along the
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`moving direction of cutter 8A.
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`Here, as to each film vessels 4 and 5 it is good if they have high barrier resistance (moisture, acid) and
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`high chemical resistance, and this comprises multi-layered/ composite structure laminated packaging
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`material.
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`_
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`Specifically, from the outside in order, there is a 4-layer structure of polyester (12 u) — polyethylene
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`(l 5 u) — aluminum (7 u) — polyethylene (25 1.1).
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`Further, polypropylene and PET etc. can be used.
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`In the lower part of the film vessel 5 is provided a protector 7 made of soft material such as paper and
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`hard plastic cutter 8A.
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`The protector 7 is used to prevent careless breaking of film vessel 4, 5 by a cutter 8A, and as shown in
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`Fig. 2,
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`it is configured such that in the center of disk—shaped protector body 7a, protector hole 13 is
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`formed and also, a bent piece 18 is provided in the periphery edge part of the protector main body 7a.
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`Then, as described later, when the cutter 8A pushes up the protector main body 7a, the protector main
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`body 7a is designed to be bent from the crease 18a of the bent piece 18.
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`The cutter 8A, as shown in Fig. 3, comprises a disk-shaped cutter bottom part 8a. On the cutter bottom
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`part 8a, a plural number of reagent passage holes 10 are provided, and is designed so that reagent inside
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`film vessels 4 and 5 and test water inside vessel main body 15, while moving through these reagent
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`passage holes 10, get mixed up.
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`Moreover, on the lower surface side of cutter bottom part 8a, a doughnut-shaped packing ll is
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`provided that comprises a plural number of protrusions 12 and whose diameter is somewhat larger than
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`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
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`packing l l thrusts into the cap body 3, falling out of cutter 8A are prevented. Further, the center part of
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`the cutter bottom part 8a has a crescent moon-shaped cutter blade 9 at the front edge, and also on the side
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`is provided a cutter tube 8 with a plural number of slits 14.
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`On the other hand, a scale l6 is formed on transparent vessel main body 15, and designed to be the
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`standard position of the amount of test water to be taken into the vessel main body 15. Moreover, opening
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`edge part of the screw 19 of vessel main body 15 is designed to be a pedestal 17 of the above described
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`packing l 1, and when the pedestal 17 abuts the lower surface side of the packing 11 by tightening the cap
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`body 3, the space between pedestal 17 and packing 11 is tightly sealed, liquid is prevented from leaking
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`outside of the vessel main body 15.
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`Following this, the analysis method by the cap-shaped reagent vessel for analysis reagents with such
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`configuration is explained. Moreover, in the following analysis method, a case of detecting phosphoric
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`acid (P04 3') of test water is explained.
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`That is, the test water is poured up to the position of scale 16 of the vessel main body l5 to be a
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`colorimetric cell.
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`In this case the amount of test water is about 25 ml.
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`In this condition, the vessel main body 15 is put into the cell box of a photoelectric photometer not
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`shown in Fig. that detects the concentration of test water by a specified wave length light, and zero
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`adjustment of photoelectric photo meter is done.
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`Next, vessel main body 15 is taken out from the photoelectric photo meter, and a cap body 3 is
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`mounted to the screw 19 of vessel main body 15. At this time, in the film vessel 4 of cap body 3 is stored
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`powder reagents that contain ascorbic acid and 10% diluted sulfuric acid that contains ammonium
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`molybdate.
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`Then when the cap body 3 is tightened while the female screw pan 2 of the cap body 3 engages the screw
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`19 of vessel main body 15,
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`First while the pedestal 17 of opening edge part of screw l9 of vessel main body 15 is abutting on the
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`lower surface side of packing l, the cutter 8A is pushed into the cap body 3. Accompanied by this, the
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`bent pieces 18 of the protector main body 7a is bent from the crease 18a part accompanied with the
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`movement of cutter 8A.
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`When the cap body 3 is tightened further from this condition, a crescent moon-shaped cutter blade
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`edge 9 of the cutter 8A breaks thru the film vessel 5. Thereby, 10% diluted sulfuric acid that contains
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`ammonium molybdate housed inside the film vessel 5 leaks out outside of film vessel 5 along the plural
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`number of slits 14 formed on the side of cutter tube 8 of the cutter 8A.
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`If the cap body 3 is further tightened from this condition, the cutter blade edge 9 of the cutter 8A
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`breaks through the film vessel 4. Thereby, powder reagent that contains ascorbic acid leaks from film
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`vessel 4. If the cap body 3 is further tightened from this condition, the crescent moon-shaped cutter blade
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`edge 9 of the cutter 8A fits into the groove 1 and the tightening of cap body 3 stops.
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`In this condition, if the vessel main body 15 is collapsed and churned, and the reagent is sufficiently
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`mixed into the test water, this reacts with P04 3' contained in the test water, and this presents the so called
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`molybdenum blue color. The reagent is sufficiently mixed with test water, and after leaving it alone for 5
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`minutes, vessel main body l5 is set again to the photoelectric photo meter. Thereby, concentration of test
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`water is displayed by mg/1.
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`Like this, in this embodiment, after specified amount of test water is poured into the transparent vessel
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`main body 15, the cap body 3 which holds film vessels 4 and 5 with specified reagent stored is mounted
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`by tightening inside from the opening of vessel main body 15, the cutter 8A is moved depending on the
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`tightening amount a, and film vessels 4 and 5 are broken thru and the reagent inside film vessels 4 and 5
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`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
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`test water poured in, the reagent can be mixed into the test water, hence, without chemical knowledge,
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`safe and accurate water quality analysis can be performed using a simple operation.
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`Moreover, for one-time analysis of test water, one cap body 3 is fine, and it is not necessary to prepare
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`a separate vessel that houses liquid reagent etc.
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`Further, since the vessel main body 15 to be colorimetric cells can be shared with respect to all test
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`water, the usage can be made as often as you want after washing, and this is very economical.
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`Further also, as pedestal l7 abuts the lower surface part of packing 11, this prevent s the liquid from
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`leaking outside of the vessel main body 15, so after finishing water quality analysis, even when disposal
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`of the liquid or washing of vessel main body 15 and cap body 3 are not possible, one can take them back
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`while tightly sealed with lid on.
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`Additionally, when the cap-shaped reagent vessel of such analysis reagent is used for an automatic
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`measurement device, since the vessel itself has the same shape, the mechanism can be simplified, and also
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`it is not necessary to provide the automatic measurement device itself with a storage function of the vessel,
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`hence the device can be miniaturized.
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`Moreover, in the above embodiment, a case was explained when two pieces of film vessels 4 and 5
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`was loaded into the cap body 3, this is not limited to this, and when one film vessel 4 or 5 was loaded, test
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`water can be inspected.
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`That is, taking an example of nickels measurement, in the same manner as above, test water is input up
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`to the scale 16 position of the vessel main body 15 to be colorimetric cells.
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`In this condition, the vessel
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`main body 15 is placed into the cell box of the photoelectric photo meter set to the specified wave length,
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`the photoelectric photo meter is set to zero adjustment in the same manner as above.
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`Next, vessel main body 15 is taken out from the photoelectric photo meter, the cap body 3 which is
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`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
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`tightened. At this time, in the same manner as above, while the pedestal 17 of the opening edge part of
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`screw 19 of vessel main body 15 abuts the lower surface side of packing 11, the cutter 8A is pushed into
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`eth lid body 3. Accompanied by this, the bent pieces 18 of the protector main body 7a is bent from the
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`crease 18a with the movement of cutter 8A.
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`When lid body 3 is further tightened from this condition, the crescent-shaped cutter blade edge 9 of the
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`cutter 8A break thru film vessels 4, 5 first. Thereby, nickels coloring reagent (powder reagent with
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`dimethyl gloyoxime as the main ingredient) housed inside film vessels 4, 5 leaks outside of film vessels 4,
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`5 along a plural number of slits 4 formed on the side surface of cutter tube 8 of the cutter 8A. If lid body
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`3 is tightened more from this condition, as the crescent-shaped cutter blade edge 9 of the cutter 8A fits
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`into the groove 1, tightening of the lid body 3 is stopped.
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`At this time, as described, the pedestal 17 of the opening edge part of screw 19 of vessel main body 15
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`abuts the lower surface part of packing 11, and between the pedestals 17 and packing 11 is tightly closed,
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`thus liquid is prevented from leaking outside of vessel main body 15. In this condition, the vessel main
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`body 15 is collapsed and churned, and after the reagent is sufficiently mixed into test water, they are lefi
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`alone for 10 minutes.
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`At this time, if the reagent sealed is powder, since it is possible that this can remain in the film vessel 4
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`orfilm vessel 5, churning by collapsing the vessel main body 15 is done sufficiently.
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`Then, after 10 minutes, if it is reset to the photoelectric photo meter, concentration can be read by mg/l
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`unit.
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`Moreover, in this embodiment, a case was explained in which by moving cutter 8A accompanied by
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`tightening of lid body 3, the film vessel 4 and/or 5 is designed to be broken thru simply, but this
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`embodiment is not limited to this, for instance this can be designed so that a spacer can be intervened
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`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
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`reagent inputted are needed, and in this case, depending on the moderation feeling of the movement of the
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`cutter 8A by spacer, adding and decreasing the tightening the lid main body 3 as a feeling can be known,
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`thus anxiety of breaking thru the film vessel 4 and or 5 that houses the next reagents during the previous
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`reagent reaction is gone.
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`In Fig. 4 thru Fig. 5 are shown the other embodiment when the configuration of the cutter 8A
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`described above is changed. Moreover, in the Fig explained in the following, the same symbols are
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`added for the parts that are shared with Fig. 1 thru Fig. 3, and duplication explanations are omitted.
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`The cutter 20 shown in these figures is made of 0. 1 5mm hard stainless steel.
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`In the center part of the
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`cutter bottom part 21 of the cutter 20 is provided a crown shaped cutter blade edge 22. This cutter blade
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`22 is made of 4 pieces of blade pieces 23 whose center part of the cutter bottom part 21 is cut and raised
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`upward, and inside of these 4 blade pieces 23 is provided reagent passage holes 24 that are formed at
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`same time as the raise by cutting.
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`In the periphery of the cutter bottom part 21, is provided a flange 25 which is bent downward.
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`lt is
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`designed such that rigidity of cutter bottom part 21 is enhanced by the flange 25.
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`The packing ll
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`is positioned on the lower surface side of the cutter 20 whose diameter is somewhat
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`larger than the cutter bottom part 2 l , and in its center, communication hole 13 that corresponds with the
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`reagent passage holes 24 described above is formed, and in its periphery, protrusion 12 is set up.
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`The cap shaped reagent vessel for analysis reagents with such a configuration is used as follows.
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`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
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`vessel main body 15 abuts the lower surface side of the packing 11, the cutter 20 is pushed into the lid
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`body 3. Accompanied by this, the bent piece 18 of the protector main body 7a, along with the movement
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`of cutter 8A, gets bent from the crease l8a part.
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`When the lid body 3 is further tightened from this condition, the cutter blade 22 of the cutter 20 first
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`breaks thru the film vessel 5. At this time, since cutter blade edge 22 comprises 4 pieces of blade pieces
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`23, the break thru of the film vessel 5 is easily and surely done.
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`By this, 10% diluted phosphoric acid that contains ammonium molybdate housed inside the film vessel
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`5 above described moves to the vessel main body 15 sides thru the reagent passage holes 24 formed at the
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`center part of the cutter 20.
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`When lid body 3 is furthermore tightened form this condition, the cutter blade 22 of the cutter 20
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`breaks thru the film vessel 4. At this time, since cutter blade edge 22 comprises 4 blade pieces 23, the
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`break thru of the film vessel 5 is easily and surely done.
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`By this, powder reagent that contains ascorbic acid leaks from the film vessel 4 described above.
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`When the lid body 3 is further tightened from this condition, as the cutter blade 22 of the cutter 20 is fit
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`into the groove 1, the tightening of the lid body 3 stops.
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`In these conditions, as described above, if vessel main body 15 is collapsed and churned, and reagent is
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`sufficiently mixed into test water, it reacts with P04 3' contained in test water, and this presents a
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`so called molybdenum blue. And reagent is sufficiently mixed into test water and leaving this alone for 5
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`minutes, vessel main body 15 is reset to the photoelectric photo meter then, concentration of the test water
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`is displayed by mg/I.
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`In this manner, in this embodiment, because the tip of the cutter blade 22 is comprised of plural blades 23
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`formed by cutting open the central part of the cutter basal means 21, not only is the manufacture thereof
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`simple, because there are plural blade tips of the strong blade piece 23, it is easy to perforate through the
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`film vessels 4 and 5, in addition to enabling the secure performance thereof.
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`WO 98/03265
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`PCT/JP97/02472
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`15
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`Moreover, in this embodiment, by providing a flanged means 25 which is fold processed on the outer
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`peripheral edge means of the cutter basal means 21, because the brittleness of the cutter basal means 21
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`can be increased, the sheet thickness of the cutter basal means 21 can be made thinner in a contrivance at
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`simplifying the manufacturing processes thereof as well as reducing the cost thereof.
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`Note that in each of the embodiments described above, an explanation was provided of the situation
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`where the cutters 8A and 20 are pushed into the interior means of the cap body 3 by means of pressing
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`hard the female screw part 2 of the cap body 3 into the biting—in state to the cap body 3 to the screw
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`means 19 of the vessel main body 15, not limited to this embodiment, for example, as illustrated in figure
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`7, by pressing in the cap body 3 to the vessel main body 15 side, the cutters 8A and 20 can be to be
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`pushed into the interior means of the cap body 3.
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`That is, a guide protrusion 31 having elasticity is provided on the upper outer periphery of the
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`aperture means 30 of the vessel main body 15. On the other hand, the locking grooves 32 and 33 and the
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`guide grooves 34 and 35 formed along the axial direction of the cap body 3 are formed on the inner
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`surface side of the cap body 3. In the state where each guide protrusion 31 fits into the closure grooves 32,
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`the pressing-in of the cap body 3 to the vessel main body 15 side is prevented, and by having the guide
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`protrusions 31 around the cap body 3 outside of that closure grooves 32, the pressing in of the cap body 3
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`is enabled, enabling the displacement of the cutters 8A and 20 described above.
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`Then, at the fitted-on position to the locking grooves 33 wherein each of the guide protrusions 31 are
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`guided by the guide groove 34, the film vessel 5 can be perforated and broken by means of the cutters 8A
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`and 20 described above. At this time, since the push of the lid body 3 is stopped by an engagement
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`groove 33, by turning the lid body 3 again and removing each guide protrusion 31 from the engagement
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`groove 33, each guide protrusion 31 is guided along the guide groove 35 and film vessel 1 is broken thru
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`by the cutter 8A described above.
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`WO