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Burette

A burette and titration technology, applied in the field of burettes and chemical experiment measuring instruments, can solve the problems of clogging glass tubes, reading scale errors, retention, etc., and achieve the effects of energy saving and convenient filling

Inactive Publication Date: 2014-01-15
天津隆雷科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the titration analysis experiment, it is inconvenient to operate when filling the titrant
The acid burette commonly used in the laboratory is prone to air bubbles during use, and the bubble solution stays in the bend of the glass tube body, blocking the glass tube, resulting in incorrect titration
Moreover, the drip opening is too large and cannot be adjusted, resulting in errors when reading the scale
In addition, acid burettes and alkaline burettes commonly used in laboratories cannot be mixed, resulting in a waste of energy.

Method used

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Embodiment Construction

[0016] The present invention will be further described below in conjunction with the accompanying drawings. figure 1 A schematic diagram of the structure of the burette, figure 2 A schematic diagram of the cock of the burette. like figure 1 As shown, the burette includes a storage sphere 1, a liquid filling cock 2, a branch pipe 3, a piston 4, a buffer ball 5, a titration scale tube 6, a titration cock 7 and a dropper 8. The storage sphere 1 is located at the top of the titration scale tube 6 and is hemispherical. The capacity of the storage sphere is 25ml, and the opening of the storage sphere is relatively large, which facilitates the filling of the titration solution. Filling cock 2 and titration cock 7 are collectively referred to as cocks, both of which are made of hard polyvinyl chloride material, which has good corrosion resistance and will not react chemically with water, acid, alkali, or salt, so the burette is suitable for both Acidic solutions are also suitable ...

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Abstract

The invention relates to a burette, which is composed of a storage ball body, a liquid feeding faucet, a titration graded tube, a branch tube, a piston, a buffer ball, a titration faucet and a dropper. The storage ball body is arranged on the top end of the titration graded tube, is in a semi-spherical shape, and has a volume of 25 to 30 ml; the liquid feeding faucet is arranged below the storage ball body and used for the communication between the storage ball body and the titration liquid below the storage ball body; the titration faucet is arranged below the titration graded tube and used for controlling the flow-volume and speed of titration, wherein the liquid feeding faucet and the titration faucet are both made of a hard polyvinyl chloride material; the surface of the titration graded tube is provided with metering scale lines, wherein the minimum scale unit is 0.1 ml; the branch tube is arranged above the titration graded tube, the piston is arranged in the middle of the branch tube, and the tail end of the branch tube is provided with a gas outlet; the buffer ball is arranged below the branch tube; the dropper is arranged in the bottom of the titration graded tube and used for control the titration volume. The burette has the advantages of convenient filling, short length, easy discharge of air in the burette, universal use under an acid or alkaline condition, and realization of precise drop-by-drop titration.

Description

technical field [0001] The invention relates to a measuring instrument for chemical experiments, in particular to a burette, which belongs to the field of glass instruments. Background technique [0002] The burette is a commonly used and necessary container in the laboratory. When performing titration analysis experiments, it is inconvenient to operate when filling the titrant. The acid burette commonly used in the laboratory is prone to air bubbles during use, and the bubble solution stays in the bend of the glass tube body, blocking the glass tube, resulting in incorrect titration. Moreover, the drip opening is large and cannot be adjusted, resulting in errors when reading the scale. In addition, the commonly used acid burette and alkaline burette in the laboratory cannot be used together, resulting in a waste of energy. Therefore, it is extremely important to develop a burette that is easy to remove air and is suitable for acidic solutions and alkaline solutions. [...

Claims

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Application Information

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IPC IPC(8): G01N31/18
Inventor 李玉丹郑飞飞
Owner 天津隆雷科技有限公司
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