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Dropper for strong corrosive chemical agent

A chemical reagent and corrosive technology, applied in the field of chemical reagent tip dropper, which can solve the problems of chemical damage and corrosion of tip tip

Inactive Publication Date: 2009-01-07
周巽
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

——Solve the problem of chemical damage (corrosion) of the above-mentioned corrosive chemical reagents to the tip

Method used

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  • Dropper for strong corrosive chemical agent
  • Dropper for strong corrosive chemical agent

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0022] like figure 1 shown:

[0023] It is not difficult to see that the dropper in the tip dropper of the prior art product is composed of a single-head dropper K, and the rear (top) of the single-head dropper K is completely open in the cavity of the tip 1 , as long as there is residual chemical agent that has not been used up in the drip chamber 2 that constitutes the single-head dropper K, there is a possibility that the residual chemical agent will flow back into the cavity of the pipette tip 1 . ——Because, under normal circumstances, the user of the tip dropper will temporarily tilt the dropper hole of the tip dropper upward or horizontally for various reasons during the gap period of continuous work. Or for a period of time, in this way, it is inevitable that the above-mentioned residual chemical agent will flow back into the cavity of the tip 1 from the drop chamber 2, and this possibility is very large.

[0024] like figure 2 shown:

[0025] Obviously, since the ...

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PUM

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Abstract

The invention provides a suction head drip pipe used for a chemical reagent with strong corrosiveness, and the suction head drip pipe structurally comprises a suction head (1) and a single-head drip pipe (K), wherein, the suction head (1) is made of conventional rubber or rubber plastic. The suction head drip pipe is characterized in that the single-head drip pipe (K) is replaced by a double-head drip pipe (P); the volume of the double-head drip pipe (P) is smaller than the volume (V) formed between the double-head drip pipe (P) and the suction head (1) under natural state. The suction head drip pipe creates conditions for preventing the chemical reagent which is not used up and is left in a drip cavity (2) from entering into the cavity of the suction head (1) and causing chemical damage to the suction head (such as, an alkali reagent has chemical corrosion performance to rubber or rubber plastic) during the use process. When a user lets the suction head drip pipe in the prior art to temporarily pitch up or lie flat as a natural sequence (such things often happen during the work), the unexhausted chemical reagent in the drip pipe can easily run back to the cavity of the suction head (1), thereby causing the chemical damage(corrosion) to the cavity.

Description

technical field [0001] The invention relates to the technology of chemical reagent pipette, in particular to the technology that can prevent corrosive chemical reagents from entering into the rubber or rubber-plastic pipette cavity constituting the pipette (prevent damage to the rubber or rubber-plastic pipette). Background technique [0002] At present, when it comes to the tip dropper used in chemical and pharmaceutical industries such as laboratories, after the tip dropper has inhaled a corrosive chemical reagent (for example, sodium hydroxide reagent), once it is not used during use When it is exhausted, the liquid outlet hole of the pipette is usually tilted upwards temporarily or placed horizontally, and the reagent remaining in the pipette is likely to flow backward from its completely open top and enter the pipette mainly composed of rubber or rubber. In the cavity of the tip made of rubber and plastic materials, it is easy to cause the following two types of chemica...

Claims

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Application Information

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IPC IPC(8): B01L3/00
Inventor 周巽
Owner 周巽
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