Gun head with super-oleophobic inner wall, super-oleophobic outer wall and oleophylic muzzle platform and pipette

Abstract

The invention discloses a gun head with a super-oleophobic inner wall, a super-oleophobic outer wall and an oleophylic muzzle platform. The manufacturing method of the gun head comprises the followingsteps of: placing the gun head of a pipette on combustion flame of an atomized silane solution to be combusted to form a silicon dioxide layer; performing soaking in a fluorine-containing silane coupling agent solution to form a fluorine-containing silane layer; and coating the muzzle platform with an ethanol solution containing clay and nano silicon dioxide to form a lipophilic nano silicon dioxide coating. The invention further discloses a pipette comprising the gun head, one end of the gun head is connected with a pipette tube, and the inner cavity of the pipette tube comprises a thin cavity and a thick cavity; an elastic piece is arranged in the thick cavity, a pressing piece is arranged at one end of the elastic piece, a plunger piece is connected to the end, close to the gun head, of the pressing piece, and limiting adjusters used for limiting the pressing piece at different positions are arranged on the gun barrel. The pipette prepared by adopting the preparation method disclosed by the invention can realize rapid measurement of liquid and does not cause liquid residue.

Description

technical field [0001] The invention relates to the technical field of pipette guns, in particular to a pipette tip and a pipette gun with super-oleophobic inner and outer walls and an oil-friendly muzzle platform. Background technique [0002] Adding trace chemical reagents to the droplets on the super-lyophobic surface or the liquid in the container through a pipette gun can realize reagent dilution, separation, mixing, reaction, etc., and then complete material analysis, component detection, formula reduction, physical and chemical performance testing, etc. . The pipette gun has the advantages of simple operation, compact structure, and superior performance. It is a micro reagent pipetting tool widely used in the fields of biomedicine, fine chemical industry, and material science. The pipette gun is composed of a pipette and a pipette tip. It uses the principle of air discharge to draw and discharge the reagent, and the moving distance of its internal piston determines t...

AI Technical Summary

Problems solved by technology

[0009] Aiming at the deficiencies in the prior art, the present invention provides a gun tip with a super-oleophobic inner and outer wall and an oil-friendly muzzle platform. The gun tip made by the manufacturing method of the gun tip can effectively solve the problem caused by residual liquid on the inner wall of the gun tip. The error defect that the measured liquid volume is smaller than the actual liquid volume, and the diverse manipulation of reagent droplets on the super-lyophobic surface, such as movement, pick-and-place, and sequential polymerization, can realize complex reagent processing functions

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