CN2868404Y - Pipet - Google Patents
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- Publication number
- CN2868404Y CN2868404Y CN 200620029828 CN200620029828U CN2868404Y CN 2868404 Y CN2868404 Y CN 2868404Y CN 200620029828 CN200620029828 CN 200620029828 CN 200620029828 U CN200620029828 U CN 200620029828U CN 2868404 Y CN2868404 Y CN 2868404Y
- Authority
- CN
- China
- Prior art keywords
- sebific duct
- pipette
- ball
- reagent
- hose
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- Devices For Use In Laboratory Experiments (AREA)
Abstract
The utility model belongs to a test analyzer. A rubber hose with the operating length of 0.5-8cm is provided on the upper port of a transfer pipe. A ball would be equipped inside the rubber hose. When the ball in the hose comes close to the port of the transfer pipe, the operation would act quickly with small error and the pipette accuracy is well controlled with good safety. At the same time, the reagent would not overflow from the transfer pipe or the hose to the hand of operator, ensuring the safety of operator. Extrude the balls part of the hose with fingers and the reagent would flow out from the hole in drops slowly. The utility model is not only easy to operate, but also can insure the precision of the extracted reagent.
Description
Technical field
The utility model relates to a kind of analysis of experiments instrument, relates generally to a kind of pipette.
Background technology
Existing pipette in use, need the extruding rubber pipette bulb, gas in the ball is discharged, suction nozzle with the rubber pipette bulb tip inserts in the endoporus of pipette upper end then, reagent is immersed in the lower end of pipette, loosen spheroid again, because the effect of test tube inside and outside differential pressure, reagent is promptly entered in the pipe by pipette lower end sharp-crested.The extruding spheroid gets final product in the time of need extruding.When making in this way; if the dynamics of extruding spheroid is grasped bad; usually can suck reagent in the rubber pipette bulb body; even also can flow to the operator on hand by overflowing on the pipette; because reagent often comprises the material of some strong acid, highly basic; therefore can damage the operator, security is relatively poor.Simultaneously, the reagent of mistake sucking-off not only causes waste, also can pollute environment.Patent 97246509.X discloses a kind of buret, is connected with a long hose in the pipe upper end, is plugged with glass marble in the pipe, and rubber pipette bulb is by the termination suction gas of long length hose during work.The advantage of this device is can limit air inflow by ball to control the amount of reagent of being inhaled, and has avoided reagent to be sucked in the rubber pipette bulb or flows on hand.Shortcoming is that hose is oversize, and ball is too far away apart from the titration mouth of pipe, makes that the operational motion reaction is slow, error is big, is difficult to guarantee precision.
Summary of the invention
The purpose of this utility model provides a kind ofly can suitably control the precision of drawing reagent, the pipette that security is good, simple in structure and easy to operate.
For reaching above-mentioned purpose, the technical solution adopted in the utility model is: a kind of pipette, comprise pipette and the sebific duct that is enclosed within the pipette upper port, and in sebific duct, be provided with ball, the active length of described sebific duct is 0.5～8cm.
Described ball and sebific duct endoporus interference fit, ball is positioned at the lower end of sebific duct.
The active length of described sebific duct is 1.5～4cm.
The active length of described sebific duct is 2～3cm.
Because the active length of sebific duct is set to 2～3cm, the ball in the sebific duct is positioned at the lower end of sebific duct, and near the pipette mouth, when operated at the ball position that hand is pinched sebific duct, its movement response was rapid like this, and error is little, inhales that accuracy of measurement is easy to control and security is good.
Description of drawings
Fig. 1 is a structural representation of the present utility model.
The specific embodiment
This pipette comprises pipette 3 and is enclosed within the sebific duct 1 of pipette upper port, is provided with ball 2 in sebific duct, and in the present embodiment, for corrosion-resistant, ball 2 adopts polytetrafluoroethylene (PTFE) to make, and in addition, also can adopt glass to make.Sebific duct 1 also adopts resistant material.Ball 2 is positioned at the lower end of sebific duct 1, the endoporus interference fit of ball 2 and sebific duct 1, and can not drop out from sebific duct 1 endoporus with ball 2 is lower limit.The active length of sebific duct 1 is 2～3cm in the present embodiment.In addition, active length that also can sebific duct 1 is set to 0.5～2cm or 3～8cm.
During work, it is suitable for reading that rubber pipette bulb is aimed at sebific duct, pinch rubber pipette bulb on the other hand, the ball position that proficiency is pinched sebific duct, air communication cross produce because of the sebific duct inner wall deformation and ball between the slit enter pipette, because air inflow is very little, reagent is very slow along the speed that the pipette endoporus rises, and it is controllable that uptake is become.Simultaneously, because the barrier effect of ball, reagent can not spill into the operator on hand by pipette mouth or sebific duct mouth yet, has guaranteed the security of operation.Without rubber pipette bulb, only with hand refers to push the ball position of sebific duct when extruding, and can make reagent by slowly oozing in the hole, and is both easy and simple to handle, can guarantee to extract the precision of reagent again.
Claims (4)
1, a kind of pipette comprises pipette and the sebific duct that is enclosed within the pipette upper port, is provided with ball in sebific duct, and it is characterized in that: the active length of described sebific duct is 0.5～8cm.
2, pipette according to claim 1 is characterized in that: described ball and sebific duct endoporus interference fit, ball is positioned at the lower end of sebific duct.
3, pipette according to claim 1 and 2 is characterized in that: the active length of described sebific duct is 1.5～4cm.
4, pipette according to claim 3 is characterized in that: the active length of described sebific duct is 2～3cm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620029828 CN2868404Y (en) | 2006-01-16 | 2006-01-16 | Pipet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620029828 CN2868404Y (en) | 2006-01-16 | 2006-01-16 | Pipet |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2868404Y true CN2868404Y (en) | 2007-02-14 |
Family
ID=37723335
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620029828 Expired - Fee Related CN2868404Y (en) | 2006-01-16 | 2006-01-16 | Pipet |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2868404Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106423325A (en) * | 2016-12-09 | 2017-02-22 | 王茹楠 | Experimental uniform-speed pipette dropper and use method thereof |
| CN110913990A (en) * | 2017-05-19 | 2020-03-24 | 兴盛生物科技股份有限公司 | Liquid transfer system |
-
2006
- 2006-01-16 CN CN 200620029828 patent/CN2868404Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106423325A (en) * | 2016-12-09 | 2017-02-22 | 王茹楠 | Experimental uniform-speed pipette dropper and use method thereof |
| CN110913990A (en) * | 2017-05-19 | 2020-03-24 | 兴盛生物科技股份有限公司 | Liquid transfer system |
| CN110913990B (en) * | 2017-05-19 | 2022-08-26 | 兴盛生物科技股份有限公司 | Liquid transfer system |
| US11724254B2 (en) | 2017-05-19 | 2023-08-15 | Thrive Bioscience, Inc. | Liquid transfer system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |