WO2008106829A1 - Trace dispenser with high precision - Google Patents
Trace dispenser with high precision Download PDFInfo
- Publication number
- WO2008106829A1 WO2008106829A1 PCT/CN2007/000855 CN2007000855W WO2008106829A1 WO 2008106829 A1 WO2008106829 A1 WO 2008106829A1 CN 2007000855 W CN2007000855 W CN 2007000855W WO 2008106829 A1 WO2008106829 A1 WO 2008106829A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- tube
- rubber stopper
- test tube
- solution
- hydrophobic
- Prior art date
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01L—CHEMICAL OR PHYSICAL LABORATORY APPARATUS FOR GENERAL USE
- B01L3/00—Containers or dishes for laboratory use, e.g. laboratory glassware; Droppers
- B01L3/02—Burettes; Pipettes
- B01L3/021—Pipettes, i.e. with only one conduit for withdrawing and redistributing liquids
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/02—Devices for withdrawing samples
- G01N1/10—Devices for withdrawing samples in the liquid or fluent state
- G01N1/14—Suction devices, e.g. pumps; Ejector devices
- G01N2001/1418—Depression, aspiration
Definitions
- the utility model relates to an analysis and detection technology, and further relates to a high-precision liquid adding device for adding a trace reagent or a sample solution.
- the prior art liquid adding device has a conventional graduated straw, a big belly pipette, a micropipette, an automatic pipette, a micro precision pipette, etc., wherein the liquid absorption is above 1 ml (100 ° P l) and the repeatability can reach 0.5%.
- the technical problem to be solved by the utility model is that, in view of the defects existing in the prior art, a high-precision micro-adjuster is proposed, and when the amount of the suction solution is sufficiently small, the repeatability can reach 0.1% or less.
- the high-precision micro-dosing device comprises a test tube and a container to be sucked into the solution, and the upper port of the test tube is provided with a rubber stopper
- the structural feature is that an exhaust pipe passes through the a rubber stopper having one end communicating with the inner tube of the test tube, one end of a hydrophobic thin tube passing through the rubber stopper and the port thereof is located in the test tube, and the other end of the hydrophobic thin tube is placed in a solution to be poured into the solution container
- the hydrophobic capillary has an inner diameter of 2 mm and a diameter of both of the two ports of 0.1 mm.
- One liquid needle passes through the rubber stopper and the lower end thereof has a bent structure.
- the utility model comprises a test tube 5 and a temple suction solution container 7, and the upper port of the test tube 5 is provided with a rubber stopper 4, which is characterized in that an exhaust pipe 3 passes through the tampon 4 and one end thereof communicates with the inner cavity of the test tube 5, one end of a hydrophobic thin tube 1 passes through the rubber stopper 4 and The port is located in the test tube 5, and the other end of the hydrophobic thin tube 1 is placed in a solution to be sucked into the solution container 7, the inner diameter of the hydrophobic thin tube 1 is 2 mm and the diameter of both ports is 0.1 mm, a scraping needle 2 passes through the rubber stopper 4 and its lower end has a bent structure.
- a discharge port 6 equipped with a valve may also be provided at the bottom of the test tube 5.
- the hydrophobic thin tube is a liquid storage tube, and the length thereof is arbitrarily set according to the required liquid addition amount.
- the lower end of the hydrophobic capillary tube 1 is inserted into the solution to be inhaled to a depth of 2-3 mm, and is evacuated by an air suction tube 3 (air pump), at which time the solution to be inhaled in the solution container 7 is introduced into a hydrophobic thinner.
- the excess liquid flows out from the upper nozzle; after stopping the pumping, the hydrophobic thin tube 1 reaches the four force balances of the internal and external gas pressure, the liquid level difference gravity, the surface tension, and the suction tube resistance after 2-3 seconds; At this time, the scraping needle 2 can be rotated, and the excess droplets staying at the port (outlet) of the hydrophobic capillary tube 1 can be scraped off; then the solution container 7 to be sucked in is removed, and the lower end of the hydrophobic thin tube is inserted into the receiving dish, and the pumping is performed.
- the gas pipe 3 is inhaled, and the liquid metered in the hydrophobic capillary 1 is accurately discharged.
- the high-precision micro-adjuster of the utility model can be used alone or in combination, and simultaneously.
- a hydrophobic thin tube has a smooth inner wall and water: when it is discharged at a speed of less than 2 ⁇ 1 / sec, the inner wall of the pipe adheres to the solution to a small extent. Neglected; since the inner diameter of the straw is small enough, the two ports are smaller, and after pumping with the suction pipe 3, the balance of the above four forces can be achieved after 2-3 seconds; since the dynamic resistance is sufficiently large, the thin tube The depth of insertion into the liquid surface and the insertion and removal will not affect the volume of the inhaled solution. As long as the designed chemical reaction process is accurate enough and the signal monitoring is accurate enough, the final detection error can be less than 0.1%. This has significant advantages for high-precision analysis of high-content components. For example, photometric analysis can reduce the color-matching product by more than 100 times, and the developer can save more than 95%, and can simultaneously take multiple channels and add Liquid, can Fast, automated, and high precision.
- the utility model relates to a high-precision micro-adhesive device.
- the hydrophobic thin tube adopts an inner diameter of about 2 mm and both ports have a diameter of 0.1 mm and a length of about 100 mm, the volume is about 100 ⁇ 1, 1 mm.
- the volume of the length is less than 0.1 ⁇ ⁇ ; when the aspiration reaches equilibrium, the scraper needle is used to scrape off more than the droplets that may remain in the tip of the tube, so that the relative error of the solution injected into the thin tube is controlled below 0.1%.
- FIG. 1 is a schematic structural view of an embodiment of the present invention.
- Fig. 1 it comprises a test tube 5 and a solution container 7 to be inhaled.
- the soil port of the test tube 5 is provided with a sealing rubber stopper 4, and the suction tube 3 passes through the rubber stopper 4 and one end thereof is placed in the test tube 5, a hydrophobic One end of the thin tubule 1 passes through the rubber stopper 4 and its port is located in the test tube 5, 'the other end of the hydrophobic thin tube is placed in a solution to be sucked into the solution container 7, and the hydrophobic thin tube 1 is made of a hydrophobic polytetra Made of vinyl fluoride or other hydrophobic materials, the inner diameter of the pipe is lmm, the diameter of the two ports is 0.02mm; when the amount of the solution is ⁇ ⁇ , ⁇ , the accuracy of 10 ⁇ ⁇ is 0.1%; when the amount of the solution is 500 ⁇ ⁇ , 10 times of complex accuracy 3 ⁇ 4 0. 03%; can be done small, volume, high precision detection of various substances to be tested.
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- Health & Medical Sciences (AREA)
- Clinical Laboratory Science (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Devices For Use In Laboratory Experiments (AREA)
- Sampling And Sample Adjustment (AREA)
Abstract
A trace dispenser with high precision includes a test tube (5) and a vessel (7) for installing an inflow of solution. A rubber stopper (5) is located on the top of said test tube (5). One extraction pipe (3) crosses through said rubber stopper (4) and one of its ends is connected with the cavity of the said test tube (5). One end of a hydrophobic slender tube (1) passes through said rubber stopper (4) and its ower end is located in the test tube (5). The other end of said hydrophobic slender tube (1) immerses into the solution of said vessel (7). The LD. of said hydrophobic slender tube (1) is less than or equal to 2mm and the diameters of its two ports are both less than or equal to 0.1mm. A needle (2) for scraping solution has a bending structure on its lower end. Said needle (2) passes through said rubber stopper 4). A mouth (6) equipped with a valve for discharging waste solution is located on the bottom of test ube (5).
Description
高精度微量加液器 High precision micro dosing device
技术领域 Technical field
本实用新型涉及分析检测技术， 进一步是指用于加入微量试剂或样品溶液 的高精度加液装置。 The utility model relates to an analysis and detection technology, and further relates to a high-precision liquid adding device for adding a trace reagent or a sample solution.
背景技术 Background technique
现有技术的加液装置有常规刻度吸管、 大肚吸管、 微量吸管、 自动吸管、 微量精密移液管等， 其中吸液量在 1ml ( lOOO P l) 以上而重复精度能达到 0.5 %的只有微量精密移液器； 吸液量小于 1000 μ ΐ 的微量精密移液器达不到 0.5 %的重复精度。 The prior art liquid adding device has a conventional graduated straw, a big belly pipette, a micropipette, an automatic pipette, a micro precision pipette, etc., wherein the liquid absorption is above 1 ml (100 ° P l) and the repeatability can reach 0.5%. Micro precision pipettes; micro precision pipettes with a suction volume of less than 1000 μ 达 do not achieve repeatability of 0.5%.
实用新型内容 Utility model content
本实用新型要解决的技术问题是， 针对现有技术存在的缺陷， 提出一种高 精度微量加液器，当它的吸取溶液的量足够小时，其重复精度可达到 0.1 %以下。 The technical problem to be solved by the utility model is that, in view of the defects existing in the prior art, a high-precision micro-adjuster is proposed, and when the amount of the suction solution is sufficiently small, the repeatability can reach 0.1% or less.
本实用新型的技术解决方案是， 所述高精度微量加液器包括一个试管和待 吸入溶液容器， 所述试管的上端口装有橡皮塞， 其结构特征是， 一根抽气管穿 过所述橡皮塞且其一端同所述试管内腔连通， 一根疏水性细管的一端通过所述 橡皮塞且其端口位于试管中， 该疏水性细管的另一端置于待 ¾入溶液容器的溶 液中， 所述疏水性细管的内径 2mm且其两端口直径均 0.1mm， 一根 液针 通过所述橡皮塞且其下端为弯折结构。 The technical solution of the present invention is that the high-precision micro-dosing device comprises a test tube and a container to be sucked into the solution, and the upper port of the test tube is provided with a rubber stopper, and the structural feature is that an exhaust pipe passes through the a rubber stopper having one end communicating with the inner tube of the test tube, one end of a hydrophobic thin tube passing through the rubber stopper and the port thereof is located in the test tube, and the other end of the hydrophobic thin tube is placed in a solution to be poured into the solution container The hydrophobic capillary has an inner diameter of 2 mm and a diameter of both of the two ports of 0.1 mm. One liquid needle passes through the rubber stopper and the lower end thereof has a bent structure.
以下对本实用新型做出进一步说明。 The present invention is further described below.
如图 1所示， 本实用新型包括一个试管 5和寺吸入溶液容器 7， 所述试管 5的上端口装有橡皮塞 4，其结构特征是，一根抽气管 3穿过所述槔皮塞 4且其 一端同所述试管 5内腔连通， 一根疏水性细管 1的一端通过所述橡皮塞 4且
端口位于试管 5中，该疏水性细管 1的另一端置于待吸入溶液容器 7的溶液中， 所述疏水性细管 1的内径 2mm且其两端口直径均 0.1mm， 一根刮液针 2通 过所述橡皮塞 4且其下端为弯折结构。 还可在试管 5的底部设置装有阀门的排 废液口 6。 As shown in FIG. 1, the utility model comprises a test tube 5 and a temple suction solution container 7, and the upper port of the test tube 5 is provided with a rubber stopper 4, which is characterized in that an exhaust pipe 3 passes through the tampon 4 and one end thereof communicates with the inner cavity of the test tube 5, one end of a hydrophobic thin tube 1 passes through the rubber stopper 4 and The port is located in the test tube 5, and the other end of the hydrophobic thin tube 1 is placed in a solution to be sucked into the solution container 7, the inner diameter of the hydrophobic thin tube 1 is 2 mm and the diameter of both ports is 0.1 mm, a scraping needle 2 passes through the rubber stopper 4 and its lower end has a bent structure. A discharge port 6 equipped with a valve may also be provided at the bottom of the test tube 5.
所述疏水性细管为贮液管， 其长度根据所需加液量任意设定。 The hydrophobic thin tube is a liquid storage tube, and the length thereof is arbitrarily set according to the required liquid addition amount.
实际使用时， 将所述疏水性细管 1的下端插入待吸入溶液 2— 3mm深度， 用抽气管 3 (接气泵） 抽气， 此时待吸入溶液容器 7中的待吸入溶液进入疏水 性细管 1中， 多余液体从上部管口流出； 停止抽气， 则 2— 3秒钟后， 疏水性细 管 1达到内外气体压力、 液位差重力、 表面张力、 吸管阻力的四种力平衡； 此 时可转动刮液针 2， 将停留在疏水性细管 1上端口 （出口） 的多余微滴刮除； 再移开待吸入溶液容器 7， 将疏水性细管下端插入接收皿, 用抽气管 3进气， 就将疏水性细管 1中定量吸入的液体精确排出。 In actual use, the lower end of the hydrophobic capillary tube 1 is inserted into the solution to be inhaled to a depth of 2-3 mm, and is evacuated by an air suction tube 3 (air pump), at which time the solution to be inhaled in the solution container 7 is introduced into a hydrophobic thinner. In the tube 1, the excess liquid flows out from the upper nozzle; after stopping the pumping, the hydrophobic thin tube 1 reaches the four force balances of the internal and external gas pressure, the liquid level difference gravity, the surface tension, and the suction tube resistance after 2-3 seconds; At this time, the scraping needle 2 can be rotated, and the excess droplets staying at the port (outlet) of the hydrophobic capillary tube 1 can be scraped off; then the solution container 7 to be sucked in is removed, and the lower end of the hydrophobic thin tube is inserted into the receiving dish, and the pumping is performed. The gas pipe 3 is inhaled, and the liquid metered in the hydrophobic capillary 1 is accurately discharged.
本实用新型的高精度微量加液器可以单独使用， 也可以多个组合，，同时璨 作。 The high-precision micro-adjuster of the utility model can be used alone or in combination, and simultaneously.
本实用新型的技术原理是，采用疏水性细管，它具有光滑的内壁和 水:性， 当其以小于 2 μ 1/秒的速度排液时，管道内壁对溶液的浸润粘附小到可以忽略不 计； 由于该吸管管道内径足够小， 两端口又更小， 用抽气管 3抽气后， 2— 3秒 后就能达上述四种力的平衡; 由于动态阻力足够大， 所述细管插入液面的深度 及插入、 取出都不会影响吸入溶液的体积。 只要设计的化学反应流程有足够的 精确度， 信号监测亦有足够的精度， 就可以使最终的检测误差达到 0.1 %以下。 这对于高含量组分的高精度分析具有显著的优鸫性； 以光度分析为例， 显色伴 积可缩小 100倍以上， 显色剂可节约 95 %以上， 可同时多路取液和加液， 既能
做到快速化、 自动化， 又能达到高精度的要求。 The technical principle of the utility model is that a hydrophobic thin tube has a smooth inner wall and water: when it is discharged at a speed of less than 2 μ 1 / sec, the inner wall of the pipe adheres to the solution to a small extent. Neglected; since the inner diameter of the straw is small enough, the two ports are smaller, and after pumping with the suction pipe 3, the balance of the above four forces can be achieved after 2-3 seconds; since the dynamic resistance is sufficiently large, the thin tube The depth of insertion into the liquid surface and the insertion and removal will not affect the volume of the inhaled solution. As long as the designed chemical reaction process is accurate enough and the signal monitoring is accurate enough, the final detection error can be less than 0.1%. This has significant advantages for high-precision analysis of high-content components. For example, photometric analysis can reduce the color-matching product by more than 100 times, and the developer can save more than 95%, and can simultaneously take multiple channels and add Liquid, can Fast, automated, and high precision.
由以上可知， 本实用新型为一种高精度微量加液器， 当采用的疏水性细管 的内径约为 2mm且其两端口直径均 0.1mm，长度约 100mm时，容积约 100 μ 1， 1mm长度的容积小于 0.1 μ ΐ; 当吸液达到平衡时， 再用刮液针刮去管尖可 能存留的多于微滴， 就可使每次注入细管中的溶液相对误差控制在 0.1 %以下。 附图说明 It can be seen from the above that the utility model relates to a high-precision micro-adhesive device. When the hydrophobic thin tube adopts an inner diameter of about 2 mm and both ports have a diameter of 0.1 mm and a length of about 100 mm, the volume is about 100 μ 1, 1 mm. The volume of the length is less than 0.1 μ ΐ; when the aspiration reaches equilibrium, the scraper needle is used to scrape off more than the droplets that may remain in the tip of the tube, so that the relative error of the solution injected into the thin tube is controlled below 0.1%. . DRAWINGS
图 1是本实用新型的一种实施例结构示意图。 1 is a schematic structural view of an embodiment of the present invention.
在图中： In the picture:
1一疏水性细管， 2—刮液针， ， 3—抽气管， 1 a hydrophobic thin tube, 2 - scraping needle, 3 - suction tube,
4一橡皮塞， 5—试管， 6—排废液口， 4 rubber stopper, 5 - test tube, 6 - discharge waste port,
7 _待吸入溶液。 7 _To be inhaled solution.
具体实施方式 detailed description
如图 1所示， 它包括一个试管 5和待吸入溶液容器 7， 试管 5的土端口装 有密封橡皮塞 4, 抽气管 3穿过橡皮塞 4且其一端置于试管 5中， 一根疏水性 细管 1的一端通过橡皮塞 4且其端口位于试管 5中， '该疏水性细管的另一端置 于待吸入溶液容器 7的溶液中， 所述疏水性细管 1用疏水性聚四氟乙烯或其它 疏水材料制作， 管道内径为 lmm， 两端口口径为 0.02mm; 当其吸取溶液量为 ΙΟΟ μ,Ι,时， 10 ^重蕈精度为 0.1 % ; 吸取溶液量为 500 μ ΐ时， ; 10次萬复精度 ¾ 0. 03%； 可做到小.体积、 高精度检测各种待测物质。 V
As shown in Fig. 1, it comprises a test tube 5 and a solution container 7 to be inhaled. The soil port of the test tube 5 is provided with a sealing rubber stopper 4, and the suction tube 3 passes through the rubber stopper 4 and one end thereof is placed in the test tube 5, a hydrophobic One end of the thin tubule 1 passes through the rubber stopper 4 and its port is located in the test tube 5, 'the other end of the hydrophobic thin tube is placed in a solution to be sucked into the solution container 7, and the hydrophobic thin tube 1 is made of a hydrophobic polytetra Made of vinyl fluoride or other hydrophobic materials, the inner diameter of the pipe is lmm, the diameter of the two ports is 0.02mm; when the amount of the solution is ΙΟΟ μ, Ι, the accuracy of 10 ^ 蕈 is 0.1%; when the amount of the solution is 500 μ ΐ , 10 times of complex accuracy 3⁄4 0. 03%; can be done small, volume, high precision detection of various substances to be tested. V
Claims
1、 一种高精度微量加液器， 包括一个试管 （5)和待吸入溶液容器（7)， 所述试管 （5) 的上端口装有橡皮塞（4)， 其特征是， 一根抽气管 （3) 穿过所 述橡皮塞（4)且其一端同所述试管（5) 内腔连通， 一根疏水性细管（1)的一 端通过所述橡皮塞（4)且其端口位于试管（5) 中， 该疏水性细管（1)的另一 端置于待吸入溶液容器（7)的溶液中， 所述疏水性细管（1) 的内径 2mm且 其两端口直径均 0.1mm， 一根刮液针 （2)通过所述橡皮塞（4) 且其下端为 弯折结构。 . 1. A high-precision micro-adjuster comprising a test tube (5) and a solution container (7) to be inhaled, wherein the upper port of the test tube (5) is provided with a rubber stopper (4), characterized in that one pumping The gas pipe (3) passes through the rubber stopper (4) and one end thereof communicates with the inner cavity of the test tube (5), one end of a hydrophobic thin tube (1) passes through the rubber stopper (4) and its port is located In the test tube (5), the other end of the hydrophobic capillary tube (1) is placed in a solution to be sucked into the solution container (7), the inner diameter of the hydrophobic thin tube (1) is 2 mm and the diameter of both ports is 0.1 mm. A scraping needle (2) passes through the rubber stopper (4) and has a bent structure at its lower end. .
2、 根据权利要求 1所述高精度微量加液器， 其特征时， 在试管 （5) 的底 部设置装有阀门的排废液口 （6)。
A high-precision micro-dosing device according to claim 1, wherein a discharge port (6) equipped with a valve is provided at the bottom of the test tube (5).
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200710034502.6 | 2007-03-07 | ||
| CNA2007100345026A CN101053852A (en) | 2007-03-07 | 2007-03-07 | High precision microscal burette |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2008106829A1 true WO2008106829A1 (en) | 2008-09-12 |
Family
ID=38794000
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/CN2007/000855 WO2008106829A1 (en) | 2007-03-07 | 2007-03-16 | Trace dispenser with high precision |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN101053852A (en) |
| WO (1) | WO2008106829A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2452792A1 (en) | 2010-11-15 | 2012-05-16 | Luigi Frati S.p.A. | Panel and method for manufacturing panels |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2172677Y (en) * | 1993-04-15 | 1994-07-27 | 李恒光 | Sampling burette for dosing liquid |
| FR2788598A1 (en) * | 1999-01-19 | 2000-07-21 | Agriquem S L | Extractor and sampler for solution of substrate e.g. soil has probe in form of porous porcelain pyrometric capsule connected to inert tube |
| WO2001085342A1 (en) * | 2000-05-12 | 2001-11-15 | Central Research Laboratories Limited | Metering dispenser with capillary stop |
| US20020114740A1 (en) * | 2001-01-31 | 2002-08-22 | Shimadzu Corporation | Liquid transfer apparatus and reaction vessel |
-
2007
- 2007-03-07 CN CNA2007100345026A patent/CN101053852A/en active Pending
- 2007-03-16 WO PCT/CN2007/000855 patent/WO2008106829A1/en active Application Filing
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2172677Y (en) * | 1993-04-15 | 1994-07-27 | 李恒光 | Sampling burette for dosing liquid |
| FR2788598A1 (en) * | 1999-01-19 | 2000-07-21 | Agriquem S L | Extractor and sampler for solution of substrate e.g. soil has probe in form of porous porcelain pyrometric capsule connected to inert tube |
| WO2001085342A1 (en) * | 2000-05-12 | 2001-11-15 | Central Research Laboratories Limited | Metering dispenser with capillary stop |
| US20020114740A1 (en) * | 2001-01-31 | 2002-08-22 | Shimadzu Corporation | Liquid transfer apparatus and reaction vessel |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2452792A1 (en) | 2010-11-15 | 2012-05-16 | Luigi Frati S.p.A. | Panel and method for manufacturing panels |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101053852A (en) | 2007-10-17 |
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