Rubber-head burette

A technology of glue-tip dropper and glue-tip, which is applied in the direction of measuring tube/pipette, etc., can solve the problems of waste of resources, corrosion of glue head, sticky and blackening, etc., and achieve the effect of avoiding the trouble of replacing instruments and avoiding corrosion

Inactive Publication Date: 2013-09-18
吕昕炜
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When using the dropper, pinch the rubber head tightly with your fingers to drive out the air in the dropper, then put the dropper into the reagent bottle, let go of your finger, the reagent will be sucked in, just squeeze the rubber head again, because The liquid that needs to be transferred in the experiment is usually a chemical reagent, even a highly corrosive chemical reagent. If you accidentally inhale too much dose when transferring the chemical reagent, it is easy to cause the reagent to enter the rubber head, or leave a residue when it is placed flat. Chemical reagents are also easy to flow back into the rubber head, causing the rubber head to corrode, harden, become sticky and black, and even rot and leak, which will affect the use. At this time, the rubber head needs to be replaced frequently, which causes waste of resources and is easy to damage the environment. produce pollution
Moreover, the droppers currently used in the market only have the function of dripping and transferring reagents. If the reagents are roughly quantitatively added, it cannot be realized. At this time, the instrument needs to be replaced, which causes inconvenience to the experimental operation.

Method used

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  • Rubber-head burette

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Experimental program
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Effect test

Embodiment Construction

[0010] like figure 1 A dropper with a rubber tip shown includes a rubber tip 1 and a glass straw 2, wherein the lower end of the glass straw 2 is in an inverted conical shape, and the upper end is a gourd-shaped structure 3, and the volume of the upper part 3a of the gourd-shaped structure is smaller than that of the lower part 3b , when inhaling a large amount of chemical reagents during use, it can be stored in the gourd-shaped structure 3, which can effectively protect the dropper rubber head. The gourd-shaped structure is divided into upper and lower parts, which can achieve double protection. It can also act as a support, so that the end of the rubber head 1 is higher than the lower end of the straw, so as to prevent the residual reagent from flowing back to the rubber head 1 and cause corrosion. The glass straw 2 is equipped with a scale 4, which can realize rough quantification when adding liquid. It avoids the trouble of replacing the instrument and makes the experimen...

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PUM

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Abstract

The invention discloses a rubber-head burette which comprises a rubber head and a glass suction pipe, wherein the lower end of the glass suction pipe is reversely conical; and the upper end of the glass suction pipe has a calabash-shaped structure. The rubber-head burette is characterized in that scales are formed on a glass pipe body. The burette is simple in structure and easy to manufacture, can effectively avoid corrosion of reagents to the rubber head and has rough quantifying property.

Description

technical field [0001] The invention relates to a sampler, in particular to a rubber dropper for laboratory use. Background technique [0002] The dropper is mainly used to transfer a small amount of chemical reagents. It is one of the commonly used instruments in experiments. It usually consists of a rubber tip and a pointed glass tube. When using the dropper, pinch the rubber head tightly with your fingers to drive out the air in the dropper, then put the dropper into the reagent bottle, let go of your finger, the reagent will be sucked in, just squeeze the rubber head again, because The liquid that needs to be transferred in the experiment is usually a chemical reagent, even a highly corrosive chemical reagent. If you accidentally inhale too much dose when transferring the chemical reagent, it is easy to cause the reagent to enter the rubber head, or leave a residue when it is placed flat. Chemical reagents are also easy to flow back into the rubber head, causing the rub...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01L3/02
Inventor 吕昕炜
Owner 吕昕炜
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