CN2393640Y - Burette - Google Patents
Burette Download PDFInfo
- Publication number
- CN2393640Y CN2393640Y CN 98245868 CN98245868U CN2393640Y CN 2393640 Y CN2393640 Y CN 2393640Y CN 98245868 CN98245868 CN 98245868 CN 98245868 U CN98245868 U CN 98245868U CN 2393640 Y CN2393640 Y CN 2393640Y
- Authority
- CN
- China
- Prior art keywords
- titration
- buret
- control valve
- utility
- model
- 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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Abstract
The utility model discloses a novel titrating pipe. A control valve (1), a buffering ball (4) and a titrating graduated pipe (5) are arranged on the titrating pipe in sequence from top to bottom, and an emulsion pipes is sheathed with a glass marble to be used as the control valve (1). A branch pipe (2) with a piston (3) is arranged between the control valve (1) and the buffering ball (4). The utility model can be used for acid form titration as well as alkali form titration and has the advantages of easy use, and no leakage or bubble generation. The utility model is especially suitable for micro-titration less than 5 ml.
Description
The utility model relates to a kind of buret, belongs to the glass apparatus field.
Buret is one of important device in the chemical analysis, and that generally uses at present has two kinds of versions.Its common ground is to control the cock of titrating solution outflow all in the liquid outlet bottom of buret, and a kind of constant buret that adopts glass piston knob and glass marble control, another kind are the microburet that overlaps flow-stop valve control on the buret bottom employing plastic catheter.
More than two kinds of titration outfits have following shortcoming:
Adopt the titration outfit of glass piston control can only be used for the acid titration, can not be used for the titration of alkali formula, the glass piston easy-to-leak liquid easily blocks.The bubble that produces is difficult for discharging.
Adopt the metal knob of the device flow-stop valve of thin plastic catheter cover flow-stop valve easily to get rusty, plastic catheter easily comes off out from the hole of flow-stop valve, and flow-stop valve is difficult for fixing during titration, and operation inconvenience produces bubble and is difficult for discharge.
The purpose of this utility model is to provide a kind of novel buret, and this buret should both can be used for the acid titration, also can be used for the titration of alkali formula, but also should be easy to use, does not produce leakage or bubble.
For achieving the above object, the scheme that the utility model adopted is as follows:
A kind of novel buret, its structure have an emulsion tube that overlaps glass marble as control valve in the upper end of this buret as shown in Figure 1, and there is the arm of a band piston below of control valve, and a buffering ball is arranged between titration graded tube and arm.
Buret of the present utility model is applicable to the situation of volume below 15ml of titrating solution, is specially adapted to the situation of 2～5ml microtitration.
The using method of this buret is as follows:
1. titration outfit is fixed on the titration stand.
2. open the piston knob, titrating solution is drawn onto in the buffering ball with rubber pipette bulb.
3. by control valve liquid level is transferred to 0 scale.
4. control valve is slowly opened, carried out titration, titration is closed to terminal immediately.
5. reading.(buret need not be taken off from frame during reading again and read).
The cleaning of this buret, available rubber pipette bulb constantly aspirates washing lotion and cleans repeatedly.Also available wash bottle blows into buret with washing lotion from the mouth arm and cleans.
The participant prior art is compared, and adopts the obtained beneficial effect of the technical solution of the utility model:
Titration outfit of the present utility model has overcome the shortcoming of prior art, has following use advantage: (1) can be used as acid or base buret uses.(2) there is not the piston leakage, the phenomenon of obstruction, because of being contained in the top of buret, there is not the generation of bubble in (3), and (4) titrating solution can be drawn automatically with rubber pipette bulb, and liquid feeding is convenient, and (5) are rational in infrastructure, are convenient to fix.
Below in conjunction with accompanying drawing and specific embodiment the technical solution of the utility model is further described:
Description of drawings:
Fig. 1 is the structural representation of novel buret of the present utility model.
1 is control valve among the figure, and 2 is arm, and 3 is piston, and 4 is buffering ball, and 5 are the titration graded tube.
Embodiment: novel buret as shown in Figure 1, the emulsion tube that a cover glass marble arranged in the top has the arm 2 of a band piston 3 as the below of control valve 1, control valve 1, and a buffering ball 4 is arranged between titration graded tube 5 and arm 2.
Claims (1)
1. buret, it is characterized in that: the emulsion tube that in the upper end of this buret is a cover glass marble is as control valve (1), there is the arm (2) of a band piston (3) below of control valve (1), between titration graded tube (5) and arm (2) buffering ball (4) is arranged.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 98245868 CN2393640Y (en) | 1998-12-02 | 1998-12-02 | Burette |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 98245868 CN2393640Y (en) | 1998-12-02 | 1998-12-02 | Burette |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2393640Y true CN2393640Y (en) | 2000-08-30 |
Family
ID=33991490
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 98245868 Expired - Fee Related CN2393640Y (en) | 1998-12-02 | 1998-12-02 | Burette |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2393640Y (en) |
-
1998
- 1998-12-02 CN CN 98245868 patent/CN2393640Y/en not_active Expired - Fee Related
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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 |