CN203711059U - Quantitative micropipettor sucker - Google Patents
Quantitative micropipettor sucker Download PDFInfo
- Publication number
- CN203711059U CN203711059U CN201420047742.5U CN201420047742U CN203711059U CN 203711059 U CN203711059 U CN 203711059U CN 201420047742 U CN201420047742 U CN 201420047742U CN 203711059 U CN203711059 U CN 203711059U
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- quantitative
- liquid
- control section
- spherical container
- micropipette tip
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Abstract
The utility model provides a quantitative micropipettor sucker, comprising a spherical container, wherein the upper part of the spherical container is communicated with a section of upper fluid moving control section; the diameter of the upper fluid moving control section is much smaller than that of the spherical container; a vacuum index line is arranged on the upper fluid moving control section. By adopting the quantitative micropipettor sucker provided by the utility model, not only is the problem of absolute quantitative liquid relief of a precise experiment solved, but also the accuracy and the precision of liquid removal are improved, the experiment cost required for accurately removing liquid is reduced, and the quantitative micropipettor sucker also can be used as a volume standard to calibrate the common pipettor for a laboratory, and is simple in structure, low in cost and easy to operate.
Description
Technical field
The utility model relates to chemical experiment equipment, relates in particular to a kind of quantitatively micropipette tip.
Background technology
Liquid-transfering gun is usually used in pipetting of a small amount of or micro liquid in laboratory, the liquid-transfering gun of different size supports the use the rifle head of different sizes, the shape that different manufacturers produce is also slightly different, but operation principle and method of operating are consistent, be that piston is realized imbibition and tapping by the stretching motion of spring, under the promotion of piston, discharge section air, utilize atmospheric pressure to suck liquid, then promote Bas Discharged liquid by piston.Conventional pipettor has micro-adjustable pipette and quantitative liquid-transfering gun at present, and micro-adjustable pipette needs difference according to imbibition volume, adopts the pipettor of different ranges can draw the liquid of 0.1 μ l to 10000 μ l.This pipettor defect is: piston is realized imbibition and tapping by the stretching motion of spring, because imbibition scope is often transferred, cause pipettor piston or spring to occur wearing and tearing and can not homing as excellent as before, cause pipettor to use just occurring moving liquid after a period of time inaccurate, even wrong situation.
Quantitatively liquid-transfering gun access times too much occur that piston or spring wear and tear and cause the inaccurate even wrong situation of liquid of moving equally; And each move liquid long-pending just must corresponding one the quantitative liquid-transfering gun of respective volume, liquid-transfering gun expensive, experimental cost is higher.
And all there is following technological deficiency in which kind of pipettor no matter: the first, due to the liquid measuring can only be by promoting piston, make spring generation deformation and the volume of control survey liquid cannot further be controlled accurately again, therefore, measure precision accurate not; The second, pipettor used all needs regular and irregular calibration, but calibration operation trouble, and a lot of experimenter all can calibration operation, causes measuring occurring error.
Utility model content
The purpose of this utility model is to solve the defect that above-mentioned prior art exists, and provides a kind of certainty of measurement accurate quantitatively micropipette tip.
A kind of quantitatively micropipette tip, comprises spherical container, is communicated with on one section, moves liquid control section on the top of described spherical container, moves the diameter of liquid control section much smaller than the diameter of spherical container on described, moves on described and in liquid control section, is provided with volume index line.
Further, quantitative micropipette tip as above, the bottom of described spherical container is communicated with one section and moves down liquid control section, described in move down the diameter of liquid control section much smaller than the diameter of spherical container.
Further, quantitative micropipette tip as above, is provided with mark buoy upper moving in liquid control section.
Further, quantitative micropipette tip as above, on the upper inwall that moves liquid control section, the both sides up and down of volume index line are respectively arranged with the buoy card for stoping mark buoy to continue floating or sink.
Further, quantitative micropipette tip as above, plastics, foam that described mark buoy is less than water by density are made.
The quantitative micropipette tip that the utility model provides, the absolute quantitation that has not only solved accurate experiment is moved liquid problem, the degree of accuracy and the accuracy of moving liquid are improved, and reduce and accurately moved the required experimental cost of liquid, and can carry out the conventional pipettor of calibration laboratory as dimension criteria, it is simple in structure, with low cost, easy operating.
Brief description of the drawings
Fig. 1 is the quantitative micropipette tip structural representation of the utility model.
Detailed description of the invention
For making the purpose of this utility model, technical scheme and advantage clearer, below in conjunction with the accompanying drawing in the utility model, technical scheme in the utility model is clearly and completely described, obviously, described embodiment is the utility model part embodiment, instead of whole embodiment.Based on the embodiment in the utility model, those of ordinary skill in the art are not making the every other embodiment obtaining under creative work prerequisite, all belong to the scope of the utility model protection.
Fig. 1 is the quantitative micropipette tip structural representation of the utility model, as shown in Figure 1, the quantitative micropipette tip that the utility model provides, comprise spherical container 11, be communicated with in the upper and lower part of described spherical container 11 respectively to have and on one section, move liquid control section 15, on described, move the diameter of liquid control section 15 much smaller than the diameter of spherical container 11, and its length is also much larger than the height of spherical container 11, moves on described and in liquid control section 15, be provided with red volume index line 14.
The quantitative micropipette tip that the utility model provides, the absolute quantitation that has not only solved accurate experiment is moved liquid problem, improve the degree of accuracy and the accuracy of moving liquid, and reduced and accurately moved the required experimental cost of liquid, and can carry out the conventional pipettor of calibration laboratory as dimension criteria.
Further, quantitative micropipette tip as above, the bottom of described spherical container 11 is communicated with one section and moves down liquid control section 16, described in move down the diameter of liquid control section 16 much smaller than the diameter of spherical container 11, and its length is also much larger than the height of spherical container 11.
Because the vessel port of some contain fluid is less, spherical container 11 is difficult to directly probe into imbitition in container, therefore, the present invention is in order to facilitate pipettor imbitition, be communicated with one section in the bottom of spherical container 11 and move down liquid control section 16, and due to the thin and long setting that moves down liquid control section 16, make can stablize the flow velocity of controlling liquid in the time moving liquid, further improve and measured the control of liquid precision, and improved and moved liquid efficiency.
Further, quantitative micropipette tip as above, is provided with blue mark buoy 12 upper moving in liquid control section 11.
Whether arrive volume index line in order easily to observe liquid, therefore be provided with a blue mark buoy, in the time that blue mark buoy 12 overlaps with red volume index line 14, show to be drawn to predetermined liquid volume.
Further, quantitative micropipette tip as above, lose volume indicative function for fear of moving liquid control section on blue mark buoy departs from, on the upper inwall that moves liquid control section 11, the both sides up and down of volume index line 14 are respectively arranged with the buoy card 13 for stoping mark buoy 12 to continue floating or sink.Plastics, foam that described mark buoy 12 is less than water by density are made.
The main container of micro quantitative determination suction pipette head of the present utility model is middle spherical container, respectively there are up and down one section thin and the long liquid control section of accurately moving at spherical container, there is up a red volume index line, when surface liquid is drawn onto this height, reached the volume of regulation.Owing to measuring small volume, be difficult for observing liquid and whether arrive volume index line, therefore be provided with a blue mark buoy, in the time that blue mark buoy overlaps with red volume index line, show to be drawn to predetermined liquid volume.Buoy locate up and down be all provided with buoy card, avoid blue mark buoy to depart from upper end and " accurately move liquid control section " and lose volume indicative function.Be designed with liquid-transfering gun configuration section in quantitative micropipette tip the top, to reach liquid-transfering gun and suction nozzle slitless connection, avoid gas leakage.The metal of this quantitative Micro pipette tip useable glass, plastics, acid and alkali-resistance etc. is made.Blue mark buoy is that plastics, the foam etc. that density is less than water made.
Concrete operations of the present utility model are: discharge the air in suction nozzle by conventional liquid-transfering gun, then imbitition has arrived target volume aspirated amount in the time that blue mark buoy is pushed to red volume index line by liquid, stops imbitition.Now the liquid of absorption can be discharged with liquid-transfering gun, step is identical with conventional liquid-transfering gun operation.Can be used for moving more accurately the long-pending control of liquid by thin and long accurate control section, if there is the position of a little artificial arrival volume index line slightly variant, also can not cause too large error.Ensure that the degree of accuracy and the accuracy of same person in the time once moving liquid is together all high.
Explain as an example of the quantitative micropipette tip of 1000 μ l example:
To measure 1000 μ l liquid as example, adopt the utility model amount micropipette tip and the general pipettor inner air of prior art cylinder, in the time measuring 1000 μ l liquid, if produce the error in reading of 1mm while adopting the quantitative micropipette tip imbitition of the utility model, adopt general pipettor air collector also to produce the exhaust error that 1mm is high simultaneously.The error producing so is separately as follows:
The utility model error that quantitative micropipette tip produces=accurately move high error in reading=π * cross-sectional area radius r 1 of cross-sectional area × 1mm of liquid control section
2error in reading=π * r1 that × 1mm is high
2× 1mm=π r1
2mm:
General pipettor air collector is drawn and is produced error=air collector floor space r2
2error in reading=π * r2 that × 1mm is high
2error in reading=π r2 that × 1mm is high
2× 1mm;
Because the utility model r1 is much smaller than r2, suppose that the utility model r1 is 1mm, and the radius r 2 of general pipettor air collector (is supposed the high 6cm of cylindrical air sleeve for 2.3mm, floor space diameter 4.6cm), therefore in the time producing same liquid pipette height error, adopting the volumetric errors that general pipettor produces is 5.29 π mm
3, be only π mm and adopt quantitative micropipette tip of the present utility model to draw the volumetric errors bringing when equal-volume liquid produces same height imbibition error
3, error is to adopt 1/5.29 of general pipettor, and the air sleeve of general pipettor also do not have the height of 6cm, that pipettor error can be larger.Therefore can reducing liquid greatly, the present invention pipettes the error of bringing.
Because Routine Test Lab does not possess appointed condition and the ability of self-adjustment pipettor and complex operation.And that quantitative rifle head provided by the invention moves liquid is accurate, can be used as dimension criteria, carry out the self-adjustment of general pipettor, step is simple.The quantitative micropipette tip of the utility model can be made with different material (comprising plastics, silica gel, glass, various metals etc.); Can experimental difference need to produce the quantitative micropipette tip of different volumes; The quantitative micropipette tip of the utility model can be used for conventional quantitatively accurately liquid pipette experiment, the conventional pipettor in laboratory thick quantitatively calibrate and other purposes quantitatively pipette operation; Mark buoy can be made with the material that the color density such as foam, plastics is less than water.
The utility model beneficial effect:
1. a quantitative micropipette tip adopts central spherical container, respectively has up and down one section of long and thin liquid to pipette the accurate control section of volume, can dwindle in a large number and measure error.
2. adopt coloured mark buoy indicating liquid quantitatively to draw and arrive red volume index line.
3. a quantitative micropipette tip adopts conventional liquid-transfering gun as liquid assimilating power source.Also can replace with can the drain instrument of quantitative micropipette tip inner air such as ear washing bulb.
Finally it should be noted that: above embodiment only, in order to the technical solution of the utility model to be described, is not intended to limit; Although the utility model is had been described in detail with reference to previous embodiment, those of ordinary skill in the art is to be understood that: its technical scheme that still can record aforementioned each embodiment is modified, or part technical characterictic is wherein equal to replacement; And these amendments or replacement do not make the essence of appropriate technical solution depart from the spirit and scope of the each embodiment technical scheme of the utility model.
Claims (5)
1. a quantitative micropipette tip, it is characterized in that, comprise spherical container (11), be communicated with on the top of described spherical container (11) and on one section, move liquid control section (15), on described, move the diameter of liquid control section (15) much smaller than the diameter of spherical container (11), move on described and in liquid control section (15), be provided with volume index line (14).
2. quantitative micropipette tip according to claim 1, it is characterized in that, the bottom of described spherical container (11) is communicated with one section and moves down liquid control section (16), described in move down the diameter of liquid control section (16) much smaller than the diameter of spherical container (11).
3. quantitative micropipette tip according to claim 1 and 2, is characterized in that, is provided with mark buoy (12) upper moving in liquid control section (11).
4. quantitative micropipette tip according to claim 3, it is characterized in that, on the upper inwall that moves liquid control section (11), the both sides up and down of volume index line (14) are respectively arranged with the buoy card (13) for stoping mark buoy (12) to continue floating or sink.
5. quantitative micropipette tip according to claim 4, is characterized in that, plastics, foam that described mark buoy (12) is less than water by density are made.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420047742.5U CN203711059U (en) | 2014-01-25 | 2014-01-25 | Quantitative micropipettor sucker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420047742.5U CN203711059U (en) | 2014-01-25 | 2014-01-25 | Quantitative micropipettor sucker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203711059U true CN203711059U (en) | 2014-07-16 |
Family
ID=51150261
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420047742.5U Expired - Fee Related CN203711059U (en) | 2014-01-25 | 2014-01-25 | Quantitative micropipettor sucker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203711059U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104258917A (en) * | 2014-10-15 | 2015-01-07 | 浙江硕华医用塑料有限公司 | Improved structure of pipette tip |
| CN104258916A (en) * | 2014-10-15 | 2015-01-07 | 浙江硕华医用塑料有限公司 | Disposable pipette tip |
| CN104826679A (en) * | 2014-11-09 | 2015-08-12 | 韦伟 | Pipette tip and pipette therewith |
-
2014
- 2014-01-25 CN CN201420047742.5U patent/CN203711059U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104258917A (en) * | 2014-10-15 | 2015-01-07 | 浙江硕华医用塑料有限公司 | Improved structure of pipette tip |
| CN104258916A (en) * | 2014-10-15 | 2015-01-07 | 浙江硕华医用塑料有限公司 | Disposable pipette tip |
| CN104258917B (en) * | 2014-10-15 | 2016-01-20 | 浙江硕华医用塑料有限公司 | A kind of modified node method of liquid transfer gun head |
| CN104826679A (en) * | 2014-11-09 | 2015-08-12 | 韦伟 | Pipette tip and pipette therewith |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140716 Termination date: 20150125 |
|
| EXPY | Termination of patent right or utility model |