CN2449229Y - Miniature burette - Google Patents
Miniature burette Download PDFInfo
- Publication number
- CN2449229Y CN2449229Y CN 00230756 CN00230756U CN2449229Y CN 2449229 Y CN2449229 Y CN 2449229Y CN 00230756 CN00230756 CN 00230756 CN 00230756 U CN00230756 U CN 00230756U CN 2449229 Y CN2449229 Y CN 2449229Y
- Authority
- CN
- China
- Prior art keywords
- titration
- capillary
- water dropper
- cock
- utility
- 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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- Sampling And Sample Adjustment (AREA)
- Devices For Use In Laboratory Experiments (AREA)
Abstract
The utility model discloses a novel miniature burette. A buffering ball (1), a capillary graduated tube (2), a standard interface (3), a plug cock (4) made of teflon or other corrosion resistant plastic, a capillary dripping head (5) and a micro dripping head (6) made of plastic are orderly arranged on the miniature burette from bottom to top. The utility model can be used for acid form titration as well as alkali form titration and has the advantages of easy use, no leakage, no blockage and no air bubbles. The utility model is especially suitable for the micro titration of 2 to 3 ml.
Description
The utility model relates to a kind of micro type buret, belongs to the glass apparatus field.
Micro type buret is one of important device in the quantitative titrimetry of chemistry, and that generally uses at present has: (1) sit type automatic liquid feeding microburette; (2) micro type buret of reequiping with the 2ml pipette.
There is following shortcoming in above micro type buret:
(1) sit type automatic liquid feeding microburette adopts glass cock to control a speed in the buret bottom, and the vaseline that glass cock is easily smeared stops up, and the bubble of generation is difficult for discharging, this buret can only be used for the acid titration, can not be used for the titration of alkali formula, and the automatic liquid feeder complexity, fragile.The volume of the every solution that oozes from the titration mouth causes titration error big greater than 0.03ml.
(2) with the micro type buret of 2ml pipette repacking for by emulsion tube (in add small glass bead) the 2ml pipette with inject four syringe needles and connect to form.This device can only be used for the titration of alkali formula, need not be in the acid titration.And easily titrated dose of corrosion of syringe needle, reading accuracy is not high, adds shortcomings such as titrant difficulty.
The purpose of this utility model is to provide a kind of novel micro type buret, and this buret can be used for the acid titration, also can be used for the titration of alkali formula.Do not produce bubble, no latch up phenomenon during titration, it is convenient to add titrant, operates identical with general normally acid buret.
For achieving the above object, the scheme that the utility model adopted is as follows:
A kind of micro type buret, this micro type buret comprises capillary graduated tube, cock, kapillary water dropper, plastics trace water dropper, a buffering ball is arranged on the top of capillary graduated tube, teflon or other corrosion-resistant plastic cock are attached thereto by the standard interface on the capillary graduated tube, the lower edge of cock has the kapillary water dropper, does not hold at the kapillary water dropper to be with plastics trace water dropper.
Micro type buret of the present utility model, the volume that is applicable to vs is at 1-3ml.
The using method of this buret is as follows:
1. buret is fixed on the titration stand.
2. open teflon or other corrosion-resistant plastic cock, be placed on graduated tube top with rubber pipette bulb cleansing solution is sucked in the graduated tube, extrude again, take out repeatedly wash 2-3 time after, wash 2 times with clear water, wash 2-3 time with distillation again.
3. titrant is sucked in the graduated tube, take out and wash 2 times, in the last tail pipe, titrant is transferred to 0 scale place with cock.
4. with the speed that p.s., about 2-3 dripped, carry out titration.
Micro type buret provided by the utility model both can be used for the acid titration, also can be used for the titration of alkali formula.Do not produce bubble, no latch up phenomenon during titration, it is convenient to add titrant, operates identical with general normally acid buret.
Description of drawings:
Fig. 1 is the structural representation of micro type buret of the present utility model, and 1 is buffering ball among the figure, and 2 is the capillary graduated tube, and 3 is standard interface, and 4 is the teflon cock, and 5 is the capillary water dropper, and 6 is micro-water dropper.
Below in conjunction with drawings and the specific embodiments the technical solution of the utility model is further described:
Embodiment:
A kind of micro type buret, its structure as shown in Figure 1.This micro type buret comprises capillary graduated tube (2), cock (4), kapillary water dropper (5), plastics trace water dropper (6), on the top of capillary graduated tube (2) buffering ball (1) is arranged, teflon or other corrosion-resistant plastic cock (4) are attached thereto by the standard interface (3) on the capillary graduated tube (2), the lower edge of cock (4) has kapillary water dropper (5), does not hold at kapillary water dropper (5) to be with plastics trace water dropper (6).
Claims (1)
1. micro type buret, it is characterized in that: this micro type buret comprises capillary graduated tube (2), cock (4), kapillary water dropper (5), plastics trace water dropper (6), on the top of capillary graduated tube (2) buffering ball (1) is arranged, teflon or other corrosion-resistant plastic cock (4) are attached thereto by the standard interface (3) on the capillary graduated tube (2), the lower edge of cock (4) has kapillary water dropper (5), does not hold at kapillary water dropper (5) to be with plastics trace water dropper (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00230756 CN2449229Y (en) | 2000-08-31 | 2000-08-31 | Miniature burette |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00230756 CN2449229Y (en) | 2000-08-31 | 2000-08-31 | Miniature burette |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2449229Y true CN2449229Y (en) | 2001-09-19 |
Family
ID=33593800
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 00230756 Expired - Fee Related CN2449229Y (en) | 2000-08-31 | 2000-08-31 | Miniature burette |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2449229Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106840300A (en) * | 2017-02-13 | 2017-06-13 | 中国林业科学研究院热带林业实验中心 | A kind of method of the device for measuring titrating solution volume and metering titrating solution volume |
| CN106872642A (en) * | 2017-01-03 | 2017-06-20 | 北京雪迪龙科技股份有限公司 | A kind of micro-sampling pipe |
| CN109012776A (en) * | 2018-09-14 | 2018-12-18 | 王子昂 | A kind of intelligent liquid dispensing device of chemical experiment |
-
2000
- 2000-08-31 CN CN 00230756 patent/CN2449229Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106872642A (en) * | 2017-01-03 | 2017-06-20 | 北京雪迪龙科技股份有限公司 | A kind of micro-sampling pipe |
| CN106872642B (en) * | 2017-01-03 | 2020-01-17 | 北京雪迪龙科技股份有限公司 | Trace sampling tube |
| CN106840300A (en) * | 2017-02-13 | 2017-06-13 | 中国林业科学研究院热带林业实验中心 | A kind of method of the device for measuring titrating solution volume and metering titrating solution volume |
| CN109012776A (en) * | 2018-09-14 | 2018-12-18 | 王子昂 | A kind of intelligent liquid dispensing device of chemical experiment |
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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 |