Leakage-proof burette, system and using method thereof

Abstract

The invention discloses a leakage-proof burette which comprises a vertically-arranged burette body, wherein the upper part of the burette body is a titrating solution injection end, the lower portion of the burette body is a burette body, the cross section area of the titrating solution injection end is larger than that of the burette body, two open holes are formed in the top of the titrating solution injection end, the first open hole is connected with a switch, opening and closing of the first open hole are controlled by the switch, a first connecting pipe is inserted into the second open hole, a titration solution control device is communicated with the burette body through the first connecting pipe, the bottom of the burette body is communicated with a U-shaped burette, the tip of the U-shaped burette faces downwards, and scale marks are arranged on the burette body. According to the invention, the U-shaped capillary glass burette is used for replacing a piston knob, a communicating vessel principle is utilized, and under the cooperation of the titration solution control device and the pipeline, the separation of a gas path and a liquid path is controlled, titration operation is carried out, and the problem of drop leakage is fundamentally avoided.

Description

technical field [0001] The invention relates to the field of chemical analysis devices, in particular to a leak-proof burette, a system and a use method thereof. Background technique [0002] Burettes commonly used in daily chemical analysis in the laboratory use piston knob-type control components to control the titration and flow rate of the titrant. This piston knob needs to be matched with the burette, which is generally made of polytetrafluoroethylene or glass, which is not well matched. Or if it is used for a long time, due to the aging of the material or poor sealing of the joint, it is prone to leakage, which affects the accuracy and convenience of the titration operation in chemical analysis. Contents of the invention [0003] In view of the above problems, the purpose of the present invention is to provide a leak-proof drop titration system and its use method, which uses a U-shaped capillary glass burette instead of the piston knob, and utilizes the principle of ...

AI Technical Summary

Problems solved by technology

[0002] Burettes commonly used in daily chemical analysis in the laboratory use piston knob-type control components to control the titration and flow rate of the titrant. This piston knob needs to be matched with the burette, which is generally made of polytetrafluoroethylene or glass, which is not well matched. Or if it has been used for a long time, due to the aging of the material or poor sealing of the joint, it is prone to leakage, which will affect the accuracy and convenience of the titration operation in chemical analysis.

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