Titration system and titration method for foot-powered automatic sample addition and zero adjustment

Abstract

The invention discloses a titration system and a titration method for automatically adding samples and zeroing by foot power. system, injection tube and air pressure regulator. After the titration system is built, the titration solution in the reagent bottle is pumped into the burette through the air intake system controlled by the foot power, and the negative pressure in the reagent bottle will suck part of the titration solution in the burette into the reagent after the air intake system stops air intake. In the bottle, the solution in the burette is sucked to the zero point, the sample addition and zero adjustment are completed in situ, and the titration is performed. After the titration is completed once, the sample addition and zero adjustment operations are repeated. Based on the system of the present invention, the hands of the operator can be liberated from the work of adding samples and zeroing, and the titration work can be completed more conveniently, safely, and simply; The unsafe, time-consuming, and efficiency-reducing disadvantages caused by zero can greatly reduce the labor intensity of titration operators, save reagents, and further ensure the efficiency of batch titration work.

Description

technical field [0001] The invention relates to the technical field of laboratory titration operations, and more particularly relates to a titration system and a titration method for automatically adding samples and zeroing by foot power. Background technique [0002] Titration is a commonly used technical method for determining a certain chemical composition in the fields of chemistry, biology, and food science. The conventional titration method is to remove the burette and pour the titration solution into the burette, clamp the burette back to the butterfly clip, and then perform zero adjustment. , and finally carry out titration and reading. In this process, there are the following disadvantages: the method of adding samples is to pour the prepared titration solution directly from the upper end of the burette into the burette. It is easy to leak. If the titrant is corrosive and toxic, it will cause great harm to the experimenter; when performing zero adjustment, it is nec...

AI Technical Summary

Problems solved by technology

[0002] Titration is a commonly used technical method for determining a certain chemical composition in the fields of chemistry, biology, and food science. The conventional titration method is to remove the burette and pour the titration solution into the burette, clamp the burette back to the butterfly clip, and then perform zero adjustment. , and finally carry out titration and reading. In this process, there are the following disadvantages: the method of adding samples is to pour the prepared titration solution directly from the upper end of the burette into the burette. It is easy to leak. If the titrant is corrosive and toxic, it will cause great harm to the experimenter; when performing zero adjustment, it is necessary to slowly release the titrant in the tube until the concave liquid surface is aligned with the zero mark. As a result, too much titrant is released, and the process of adding titrant and zeroing needs to be repeated, which will consume a lot of time and reduce efficiency; when faced with large-scale titration, this method needs to spend a lot of time on adding titrant and zeroing. time

[0003] Aiming at the above problems, those skilled in the art have done a lot of research, and there are also related technical reports on automatic zero adjustment and accurate zero adjustment. The methods are inseparable from hands to give power or operate

As for the operation of titration itself, both hands have been used at full capacity, and it is actually beyond the power of the hand to complete the automatic sample addition and zero adjustment.

At present, there is no feasible research report to fundamentally solve the above problems

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