Self-sealing sample container and titration mechanism

Abstract

The present application relates to the technical field of petroleum product detection, and in particular to a self-sealing sample container and a titration mechanism. The self-sealing sample container is applied to the titration mechanism. The titration mechanism comprises a fixed part and a movable part movably arranged on the fixed part, and the movable part comprises a first position and a second position; the self-sealing sample container comprises a container bottle, a bottle cap assembly, a sealing member and a magnetic body. The container bottle is arranged on the movable part, and the bottle cap assembly is arranged at the bottle mouth of the container bottle. The interior of the bottle cap assembly is provided with a cavity and a first through hole and a second through hole connected with the cavity, and the first through hole is connected with the container bottle; the sealing member is movably arranged in the cavity, and the sealing member comprises a first state of covering the first through hole and a second state of being away from the first through hole; the magnetic body is arranged on the fixed part; the self-sealing sample container can automatically open and close the opening of the container bottle, and the operation is simple and there will be no operation errors, thereby ensuring the accuracy of the later product measurement.

Description

Technical Field

[0001] The present application relates to the technical field of petroleum product detection, and in particular to a self-sealing sample container and a titration mechanism. Background Art

[0002] Titration is often used in the process of petroleum product testing, in which the titrant includes an indicator titrant and a determination agent titrant. When the burette absorbs the titrant, the opening of the container bottle needs to be opened, and after the titrant is absorbed, the opening of the container bottle needs to be closed in time to prevent the titrant from volatilizing. At present, the opening of the container bottle is opened and closed manually, which is cumbersome and prone to operational errors, resulting in the opening of the container bottle being forgotten to be closed, affecting the concentration of the titrant and the accuracy of the subsequent product measurement. Summary of the invention

[0003] The purpose of the present application is to provide a self-sealing sample container and a titration mechanism, which can automatically open and close the opening of the container bottle, is easy to operate, and will not cause operating errors, thereby ensuring the accuracy of subsequent product measurements.

[0004] To this end, in the first aspect, an embodiment of the present application provides a self-sealing sample container, which is applied to a titration mechanism, wherein the titration mechanism includes a fixed part and a movable part movably arranged on the fixed part, wherein the movable part includes a first position and a second position; the self-sealing sample container includes: a container bottle, which is arranged on the movable part, and the container bottle is used to contain a reagent; a bottle cap assembly, which is arranged at the bottle mouth of the container bottle, and the interior of the bottle cap assembly is provided with a cavity and a first through hole and a second through hole connected to the cavity, and the first through hole is connected to the container bottle; a sealing member, which is movably arranged in the cavity, and the sealing member includes a first state of covering the first through hole and a second state of being away from the first through hole; a magnetic body is arranged on the fixed part; wherein, when the movable part is located at the first position, the magnetic body adsorbs the sealing member to keep the sealing member in the second state; when the movable part is located at the second position, the sealing member returns to the first state.

[0005] In a possible implementation, the inner bottom wall of the cavity is provided with a guide bevel, the bottom of which is connected to the first through hole; when the movable part is located at the first position, one end of the guide bevel away from the first through hole points to the magnetic body.

[0006] In a possible implementation, the sealing element is a magnetic sphere.

[0007] In a possible implementation, the inner bottom wall of the cavity is a funnel structure, and the first through hole is located at the lowest point of the funnel structure.

[0008] In a possible implementation, a sink groove is provided on the inner bottom wall of the cavity, and the sink groove is coaxially arranged with the first through hole. When the sealing member is in the first state, the sealing member is located in the sink groove.

[0009] In a possible implementation, the movable part includes a turntable that is rotatable relative to the fixed part, and the turntable is rotatable between a first position and a second position.

[0010] In a possible implementation, a positioning groove for positioning the container bottle is provided on the turntable, the container bottle is movably disposed in the positioning groove, a first positioning portion is provided in the positioning groove, and a second positioning portion cooperating with the first positioning portion is provided on the bottle cap assembly.

[0011] In a possible implementation, the bottle cap assembly includes a cap body and a support plate disposed in the cap body, a cavity is formed between the cap body and the support plate, a first through hole is disposed on the support plate, and a second through hole is disposed on the cap body.

[0012] In a possible implementation manner, the second through hole is located directly above the first through hole.

[0013] In a second aspect, an embodiment of the present application provides a titration mechanism, comprising the above-mentioned self-sealing sample container.

[0014] According to the self-sealing sample container and titration mechanism provided in the embodiment of the present application, when the self-sealing sample container is used for an acid-base titration experiment, the operator only needs to place the container bottle containing the liquid to be tested into the positioning groove of the movable part. When the movable part is rotated to the second position (non-test position), the seal automatically falls into the first through hole under the action of gravity to form a seal. This process does not require manual intervention, thus avoiding the problem of incomplete sealing caused by improper operation. When titration is required, the operator only needs to rotate the movable part to the first position (test position), at which time the magnetic body will automatically attract the seal and open the first through hole. This automated opening process ensures the consistency of each opening and reduces the errors caused by human factors. The opening and closing of the container bottle can be automatically completed, the operation is simple, and there will be no operating errors, thereby ensuring the accuracy of later product measurements. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and, together with the description, serve to explain the principles of the invention.

[0016] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0017] One or more embodiments are exemplarily described by pictures in the corresponding drawings, and these exemplified descriptions do not constitute limitations on the embodiments. Elements with the same reference numerals in the drawings represent similar elements, and unless otherwise stated, the figures in the drawings do not constitute proportional limitations.

[0018] Figure 1 A schematic structural diagram of a self-sealing sample container, a fixed part and a movable part provided in an embodiment of the present application is shown;

[0019] Figure 2 A schematic diagram of the three-dimensional structure of a self-sealing sample container provided in an embodiment of the present application is shown;

[0020] Figure 3 A schematic diagram of an explosion structure of a self-sealing sample container provided in an embodiment of the present application is shown;

[0021] Figure 4 A schematic diagram of an exploded structure of a bottle cap assembly provided in an embodiment of the present application is shown;

[0022] Figure 5 A schematic diagram of a top view of a support plate according to an embodiment of the present application is shown;

[0023] Figure 6 Show Figure 5 Schematic diagram of the cross-section structure along the AA direction;

[0024] Figure 7 A schematic structural diagram of the connection between a turntable and a self-sealing sample container provided in an embodiment of the present application is shown.

[0025] Description of reference numerals:

[0026] 1. Container bottle;

[0027] 2. Bottle cap assembly; 21. Cavity; 211. Guide chute; 212. Funnel structure; 213. Sink; 22. First through hole; 23. Second through hole; 24. Cover; 25. Support plate; 26. Second positioning portion;

[0028] 3. Seals;

[0029] 4. Magnetic body;

[0030] 5. Fixed part;

[0031] 6. movable part; 61. turntable; 611. positioning groove; 612. first positioning part. DETAILED DESCRIPTION

[0032] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0033] The disclosure below provides many different embodiments or examples to realize the different structures of the embodiments of the present application. In order to simplify the disclosure of the embodiments of the present application, the parts and settings of specific examples are described below. Of course, they are only examples, and the purpose is not to limit the embodiments of the present application. In addition, the embodiments of the present application can repeat reference numbers and / or letters in different examples. This repetition is for the purpose of simplification and clarity, and does not itself indicate the relationship between the various embodiments and / or settings discussed.

[0034] For ease of description, spatial relative terms may be used herein to describe the relative positional relationship or movement of one element or feature relative to another element or feature as shown in the figure, such as "inside", "outside", "inner side", "outer side", "below", "below", "above", "above", "front", "back", etc. Such spatial relative terms are intended to include different orientations of the device in use or operation in addition to the orientation depicted in the figure. For example, if the device in the figure undergoes a position flip or a posture change or a motion state change, then these directional indications also change accordingly, for example: an element described as "below other elements or features" or "below other elements or features" will subsequently be oriented as "above other elements or features" or "above other elements or features". Therefore, the example term "below..." may include both upper and lower orientations. The device may be otherwise oriented (rotated 90 degrees or in other directions) and the spatial relative descriptors used herein are interpreted accordingly.

[0035] In order to solve the problems in the prior art, the present application provides a self-sealing sample container and a titration mechanism. The self-sealing sample container can automatically open and close the opening of the container bottle. The operation is simple and there will be no operating errors, thereby ensuring the accuracy of subsequent product measurements.

[0036] Figure 1 A schematic structural diagram of a self-sealing sample container, a fixed part and a movable part provided in an embodiment of the present application is shown; Figure 2 A schematic diagram of the three-dimensional structure of a self-sealing sample container provided in an embodiment of the present application is shown; Figure 3A schematic diagram of an explosion structure of a self-sealing sample container provided in an embodiment of the present application is shown; Figure 4 A schematic diagram of an exploded structure of a bottle cap assembly provided in an embodiment of the present application is shown; Figure 5 A schematic diagram of a top view of a support plate according to an embodiment of the present application is shown; Figure 6 Show Figure 5 Schematic diagram of the cross-section structure along the AA direction; Figure 7 A schematic structural diagram of the connection between a turntable and a self-sealing sample container provided in an embodiment of the present application is shown.

[0037] like Figure 1-7 As shown, an embodiment of the present application provides a self-sealing sample container, which is applied to a titration mechanism. The titration mechanism includes a fixed part 5 and a movable part 6 movably arranged on the fixed part 5, and the movable part 6 includes a first position and a second position; the self-sealing sample container includes: a container bottle 1, which is arranged on the movable part 6, and the container bottle 1 is used to contain a reagent; a bottle cap assembly 2, which is arranged at the bottle mouth of the container bottle 1, and the interior of the bottle cap assembly 2 is provided with a cavity 21 and a first through hole 22 and a second through hole 23 connected to the cavity 21, and the first through hole 22 is connected to the container bottle 1; a sealing member 3, which is movably arranged in the cavity 21, and the sealing member 3 includes a first state of covering the first through hole 22 and a second state of being away from the first through hole 22; and a magnetic body 4, which is arranged on the fixed part 5; wherein, when the movable part 6 is located at the first position, the magnetic body 4 adsorbs the sealing member 3 to keep the sealing member 3 in the second state; when the movable part 6 is located at the second position, the sealing member 3 returns to the first state.

[0038] In the present application, in actual use scenarios, such as when conducting an acid-base titration experiment, the operator only needs to place the container bottle 1 containing the liquid to be tested into the positioning groove 611 of the movable part 6. When the movable part 6 is rotated to the second position (non-test position), the seal 3 automatically falls into the first through hole 22 under the action of gravity to form a seal. This process does not require human intervention, avoiding the problem of incomplete sealing caused by improper operation. When titration is required, the operator only needs to rotate the movable part 6 to the first position (test position), at which time the magnetic body 4 will automatically attract the seal 3 and open the first through hole 22. This automated opening process ensures the consistency of each opening and reduces the errors caused by human factors.

[0039] Taking the titration of highly volatile organic solvents (such as ethanol) as an example, in the non-test state, the seal 3 tightly seals the first through hole 22 to form a sealed environment with good airtightness. This design not only prevents the volatilization of the solvent, but also prevents moisture or other impurities in the environment from entering the container, thereby ensuring the purity and concentration stability of the sample.

[0040] In the scenario of performing titration of multiple samples continuously, the operator can quickly switch different sample containers by simply rotating the movable part 6. This greatly simplifies the tedious steps of changing samples, switching containers, etc. in traditional titration, and improves work efficiency. For example, in a quality control laboratory, technicians can easily handle large-scale sample testing tasks and reduce operational errors caused by fatigue.

[0041] The design of the present invention is applicable to various types of titration experiments. For example, in acid-base titration, the interference of CO2 in the atmosphere can be effectively prevented; in redox titration, the influence of oxygen in the air on easily oxidizable substances can be avoided; in complex titration, the stability of metal ions can be maintained to avoid precipitation or hydrolysis. This wide applicability allows the laboratory to complete various types of titration tasks with the same set of equipment, thereby improving the utilization rate of the equipment and the overall efficiency of the laboratory.

[0042] In some embodiments, a guiding groove 211 is provided on the inner bottom wall of the cavity 21 , and the bottom of the guiding groove 211 is connected to the first through hole 22 ; when the movable part 6 is in the first position, the end of the guiding groove 211 away from the first through hole 22 points to the magnetic body 4 .

[0043] In the present application, when performing micro titration, such as the determination of trace metal ions, accurate sealing and opening are crucial. The guide chute 211 ensures that the sealing member 3 (such as a magnetic ball) can accurately fall onto the first through hole 22 in each operation. This accuracy reduces sample loss or contamination caused by improper sealing and improves the accuracy of micro analysis.

[0044] In scenarios where multiple samples need to be switched quickly, such as automated titration systems, the inclined design of the guide chute 211 uses gravity to accelerate the movement of the seal 3. This design enables the system to switch between the sealed and open states more quickly, improving the efficiency of the entire titration process. For example, when performing continuous water sample analysis at a water quality monitoring station, fast and accurate sample switching and analysis can be achieved.

[0045] In some embodiments, the seal 3 is a magnetic sphere.

[0046] In the present application, when processing volatile or hygroscopic samples, such as the titration of organic solvents or anhydrous substances, the magnetic sphere can form a point contact seal with the circular first through hole 22. This sealing method not only has a good sealing effect, but also can minimize the sealing area, reduce the contact between the sample and the seal 3, and reduce potential contamination or adsorption problems.

[0047] When performing continuous multi-sample analysis, such as in an automatic titrator, the magnetic sphere can roll freely in the cavity 21. This design allows good sealing and opening performance to be maintained even when the instrument is slightly vibrated or tilted, thereby improving the stability and reliability of the device.

[0048] In some embodiments, the inner bottom wall of the cavity 21 is a funnel structure 212 , and the first through hole 22 is located at the lowest point of the funnel structure 212 .

[0049] In the present application, when processing viscous liquid samples, such as titration analysis of certain foods or petroleum products, the funnel structure 212 can effectively guide the seal 3 (such as a magnetic ball) to accurately fall into the first through hole 22. This design overcomes the obstacles that the viscous liquid may cause to the movement of the seal 3, ensuring the reliability of each seal.

[0050] When performing long-term or repeated titration, the funnel structure 212 promotes complete reflux of the liquid. For example, when performing continuous water quality monitoring in an automatic titration system, even if the sample volume is small, it can ensure that every drop of liquid can return to the container bottle 1, avoiding the residue and accumulation of the sample in the cavity 21, and improving the accuracy and repeatability of the analysis.

[0051] In some embodiments, a sink groove 213 is disposed on the inner bottom wall of the cavity 21 . The sink groove 213 is coaxially disposed with the first through hole 22 . When the sealing member 3 is in the first state, the sealing member 3 is located in the sink groove 213 .

[0052] In the present application, in experiments requiring long-term sealing, such as certain slow-reacting titration processes, the sink 213 provides stable positioning for the seal 3. This design enables the seal 3 to stay firmly in the predetermined position under the action of gravity, and maintain a good sealing effect even in the case of external vibration or temperature changes.

[0053] When performing high-precision titration, such as trace analysis or calibration of standard solutions, the coaxial design of the sink 213 ensures that the seal 3 can accurately seal the first through hole 22 every time. This accuracy reduces the micro leakage caused by the deviation of the sealing position and improves the reliability and reproducibility of the analysis results.

[0054] In some embodiments, the movable part 6 includes a turntable 61 rotatable relative to the fixed part 5 , and the turntable 61 can rotate between a first position and a second position.

[0055] In this application, in scenarios where frequent sample replacement is required, such as batch product testing in a quality control laboratory, the design of the turntable 61 allows the operator to switch sample containers with a simple rotation action. This greatly reduces the cumbersome steps of taking and placing containers, opening and closing lids, etc. in traditional methods, improves work efficiency, and reduces operator fatigue.

[0056] In the automated titration system, the turntable 61 can be precisely positioned to the first position (test position) and the second position (sealed position) by mechanical or electronic control. This precise positioning ensures the consistency of conditions for each test and improves the comparability and reliability of the analysis results. For example, when continuously monitoring water quality at an environmental monitoring station, it can be ensured that each sample is analyzed at the same position, reducing the system error caused by position changes.

[0057] In some embodiments, a positioning groove 611 for positioning the container bottle 1 is provided on the turntable 61, and the container bottle 1 is movably arranged in the positioning groove 611. A first positioning portion 612 is provided in the positioning groove 611, and a second positioning portion 26 cooperating with the first positioning portion 612 is provided on the bottle cap assembly.

[0058] In the present application, in a titration experiment that requires precise control of reaction conditions, such as a temperature-sensitive titration reaction, the positioning structure ensures that the container bottle 1 is in exactly the same position in each test. This precise positioning helps to maintain the consistency of experimental conditions, especially when the titration device is equipped with a temperature control or stirring device, the accuracy of positioning directly affects the reliability of the experimental results.

[0059] In the titration process that requires a long reaction time or multiple additions of reagents, the positioning structure prevents the container bottle 1 from accidentally rotating during operation. This not only ensures the reliability of the seal, but also ensures the position consistency of multiple additions or sampling, thereby improving the accuracy and repeatability of the experiment.

[0060] In some embodiments, the bottle cap assembly includes a cap body 24 and a support plate 25 disposed in the cap body 24 , a cavity 21 is formed between the cap body 24 and the support plate 25 , a first through hole 22 is disposed on the support plate 25 , and a second through hole 23 is disposed on the cap body 24 .

[0061] In the present application, in a space-limited laboratory environment, such as a portable titration device, this compact design can maximize the use of limited space. For example, during rapid on-site water quality analysis, multiple functions (sealing, guiding, titration solution addition) can be integrated into a small bottle cap assembly 2, thereby improving the portability and practicality of the device.

[0062] When dealing with samples that are easy to crystallize or precipitate, such as the titration of certain inorganic salt solutions, the detachable design allows the operator to easily remove the support plate 25 for cleaning. This not only facilitates daily maintenance, but also effectively prevents measurement errors caused by residue accumulation and prolongs the service life of the equipment.

[0063] In some embodiments, the second through hole 23 is located directly above the first through hole 22 .

[0064] In this application, when performing precision titration, such as drug content analysis, this design provides a direct vertical path for the titrant. The titrant can be accurately added drop by drop to the sample, reducing the residue or splash of the titrant on the container wall, and improving the accuracy and precision of the titration.

[0065] When performing titration experiments that are sensitive to impurities, such as trace metal ion analysis, this design avoids direct contact between the titration liquid and the seal 3. This not only reduces potential contamination, but also avoids possible corrosion or influence of the titration liquid on the material of the seal 3, prolongs the service life of the seal 3, and ensures stability in long-term use.

[0066] When the self-sealing sample container is used for an acid-base titration experiment, the operator only needs to place the container bottle 1 containing the liquid to be tested into the positioning groove 611 of the movable part 6. When the movable part 6 is rotated to the second position (non-test position), the seal 3 automatically falls into the first through hole 22 under the action of gravity to form a seal. This process does not require manual intervention, thus avoiding the problem of incomplete sealing due to improper operation. When titration is required, the operator only needs to rotate the movable part 6 to the first position (test position), at which time the magnetic body 4 will automatically attract the seal 3 and open the first through hole 22. This automated opening process ensures the consistency of each opening and reduces the errors caused by human factors. The opening of the container bottle 1 can be opened and closed automatically, and the operation is simple and there will be no operating errors, thereby ensuring the accuracy of later product measurements.

[0067] An embodiment of the present application provides a titration mechanism, comprising the above-mentioned self-sealing sample container.

[0068] Specifically, the titration mechanism provided in the present application is applied to the determination of the acid value of petroleum products. The acidic components in the sample are extracted with ethanol, and then titrated with an alkaline solution to calculate the acid value of the product.

[0069] It should be understood that the terms used herein are only for the purpose of describing specific example embodiments and are not intended to be limiting. Unless the context clearly indicates otherwise, the singular forms "one", "an" and "" as used herein may also be meant to include plural forms. The terms "include", "comprise", "contain", and "have" are inclusive and therefore specify the presence of stated features, steps, operations, elements and / or parts, but do not exclude the presence or addition of one or more other features, steps, operations, elements, parts, and / or combinations thereof. The method steps, processes, and operations described herein are not interpreted as necessarily requiring them to be performed in the specific order described or illustrated, unless the execution order is clearly indicated. It should also be understood that additional or alternative steps may be used.

[0070] Although the terms first, second, third, etc. can be used in the text to describe multiple elements, components, regions, layers and / or sections, these elements, components, regions, layers and / or sections should not be limited by these terms. These terms can only be used to distinguish an element, component, region, layer or section from another region, layer or section. Unless the context clearly indicates, terms such as "first", "second" and other numerical terms do not imply order or sequence when used in the text. Therefore, the first element, component, region, layer or section discussed below can be referred to as the second element, component, region, layer or section without departing from the teaching of the example embodiments.

[0071] The above is only a specific implementation of the present application, so that those skilled in the art can understand or implement the present application. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to the embodiments shown herein, but will conform to the widest range consistent with the principles and novel features applied for herein.

Claims

1. A self-sealing sample container, applied to a titration mechanism, the titration mechanism comprising a fixed part (5) and a movable part (6) movably arranged on the fixed part (5), the movable part (6) comprising a first position and a second position; characterized in that: The self-sealing sample container comprises: A container bottle (1) is arranged on the movable part (6), and the container bottle (1) is used to contain a reagent; A bottle cap assembly (2) is arranged at the bottle mouth of the container bottle (1); a cavity (21) and a first through hole (22) and a second through hole (23) communicating with the cavity (21) are arranged inside the bottle cap assembly (2); the first through hole (22) is communicated with the container bottle (1); a sealing member (3) movably disposed in the cavity (21), the sealing member (3) comprising a first state of covering the first through hole (22) and a second state of being away from the first through hole (22); and A magnetic body (4) is provided on the fixed part (6); when the movable part (6) is located at the first position, the magnetic body (4) absorbs the sealing member (3) so that the sealing member (3) is maintained in the second state; when the movable part (6) is located at the second position, the sealing member (3) returns to the first state.

2. The self-sealing sample container according to claim 1, characterized in that: The inner bottom wall of the cavity (21) is provided with a guiding inclined groove (211), the bottom of which is connected to the first through hole (22); when the movable part (6) is located at the first position, the end of the guiding inclined groove (211) away from the first through hole (22) points towards the magnetic body (4).

3. The self-sealing sample container according to claim 2, characterized in that: The sealing element (3) is a magnetic sphere.

4. The self-sealing sample container according to claim 1, characterized in that: The inner bottom wall of the cavity (21) is a funnel structure (212), and the first through hole (22) is located at the lowest point of the funnel structure (212).

5. The self-sealing sample container according to any one of claims 2 to 4, characterized in that: A sink groove (213) is provided on the inner bottom wall of the cavity (21), and the sink groove (213) is coaxially arranged with the first through hole (22). When the sealing member (3) is in the first state, the sealing member (3) is located in the sink groove (213).

6. The self-sealing sample container according to claim 2, characterized in that: The movable part (6) comprises a rotating disk (61) which can rotate relative to the fixed part (5), and the rotating disk (61) can rotate between the first position and the second position.

7. The self-sealing sample container according to claim 6, characterized in that: The turntable (61) is provided with a positioning groove (611) for positioning the container bottle (1); the container bottle (1) is movably arranged in the positioning groove (611); a first positioning portion (612) is arranged in the positioning groove (611); and the bottle cap assembly (2) is provided with a second positioning portion (26) cooperating with the first positioning portion (612).

8. The self-sealing sample container according to claim 1, characterized in that: The bottle cap assembly (2) comprises a cap body (24) and a support plate (25) arranged in the cap body (24); the cavity (21) is formed between the cap body (24) and the support plate (25); the first through hole (22) is arranged on the support plate (25); and the second through hole (23) is arranged on the cap body (24).

9. The self-sealing sample container according to claim 1, characterized in that: The second through hole (23) is located directly above the first through hole (22).

10. A titration mechanism, characterized in that: Comprising a self-sealing sample container as described in any one of claims 1-9.

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