Needle cylinder type titration method

Abstract

The invention relates to the technical field of liquid dropping, and discloses a needle cylinder type titration method, which comprises the following steps of: 1, setting the volume required to be dropped into a target titration bottle as Aml, setting the parameters of a weighing device, and setting the volume required to be dropped into a re-inspection titration bottle as Bml; 2, sucking the solution by using a needle cylinder tube; 3, dripping a solution into the target titration bottle, and marking the volume of the actually dripped solution as A'ml; 4, dropwise adding a solution into the recheck titration bottle, and marking the volume of the actually dropwise added solution as B'ml; and 5, displaying the weight of the solution dripped into the recheck titration bottle by the weighingdevice, if the weight is within the error range, it shows that the needle cylinder tube drips accurately, A '= A, and B' = B; and if the weight is not within the error range, indicating that the liquid dropping of the needle cylinder tube is inaccurate. The needle cylinder type titration method provided by the invention can be used for detecting the sealing performance of the needle cylinder tubeand ensuring the accuracy of liquid dropping.

Description

technical field [0001] The invention relates to the technical field of dripping, in particular to a syringe type titration method. Background technique [0002] Most of the dyeing and finishing processes are chemical processing, and textile materials are washed and dried repeatedly after chemical processing. In order to print and dye the exact color number, it is necessary to drip the solution in the laboratory for experimentation. The dripping of laboratory liquids has high requirements for titration accuracy. At present, the dripping of laboratory liquid in the dyeing and finishing industry generally uses a syringe tube to absorb and titrate a certain volume of liquid. Titration is performed directly by aspirating a volume of liquid using a syringe. During titration, it is easy to cause inaccurate liquid titration due to poor sealing of the syringe tube. Moreover, the needle tube of the syringe tube has a certain length, and there is a solution residue in the needle tu...

AI Technical Summary

Problems solved by technology

During titration, it is easy to cause inaccurate liquid titration due to poor sealing of the syringe tube

Moreover, the needle tube of the syringe tube has a certain length, and there is a solution residue in the needle tube during large-volume titration, which cannot guarantee the accuracy of solution dripping, thereby affecting the stability of the dyeing and finishing formula and process.

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