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Quantitative filling test tube

A quantitative filling and filling tube technology, applied in the direction of measuring tube/pipette, laboratory utensils, laboratory containers, etc., can solve the problems of difficult to control the mixing ratio and affect the effect, and achieve a reasonable structure design. Novel, easy to control, and ensure the effect of experimental results

Inactive Publication Date: 2016-09-14
JIANGYIN ZHENGZHONG SCI & EDUCATION EQUIP
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In teaching demonstration experiments, many chemical experiments need to strictly control the mixing ratio of two liquids, but in the actual operation process, if there is no quantitative dropper or quantitative measuring bottle, it is difficult to control the mixing ratio, which will affect the effect of the experiment

Method used

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  • Quantitative filling test tube

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Embodiment Construction

[0009] The technical characteristics of the present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0010] The present invention is a test tube for quantitative filling, which includes a test tube body. The test tube body includes a cylindrical glass tube. Filling pipe, the top of the filling pipe is provided with a sealing plug; the filling pipe is a cylindrical pipe, the bottom of the filling pipe is provided with a tapered bottom end, and the taper of the tapered bottom end is 1:1.36; The lower end of the filling tube is socketed in the glass tube, and a rubber sealing ring is arranged between the outer wall of the filling tube and the inner wall of the glass tube; A dropper, the dropper passes through the sealing plug and the through hole at the tapered bottom, and a rubber sealing ring is arranged between the dropper and the through hole; several liquid outlet holes are arranged in the middle of the dropp...

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Abstract

The invention discloses a quantitative filling test tube. The test tube comprises a test tube body. The test tube body comprises a cylindrical glass tube. The lower part of the glass tube is an arc bottom. The radian of the arc bottom is 2.14. The top of the glass tube is provided with a filling pipe. A plug is arranged in the top end of the filling pipe. The filling pipe is a cylindrical pipe. The bottom of the filling pipe is provided with a tapered bottom, and the radian of the tapered bottom is 1:1.36. The lower end of the filling pipe is sleeved in the glass tube. A rubber sealing ring is arranged between the external wall of the filling pipe and the internal wall of the glass tube. The quantitative filling test tube has the advantages that the shortages of prior art can be overcome, and the structural design is reasonable and novel.

Description

technical field [0001] The invention relates to a test tube for quantitative filling, which belongs to the field of teaching equipment. Background technique [0002] Test tube, a commonly used instrument in chemical laboratories, is used as a reaction container for a small amount of reagents. It is used at room temperature or when heated (it should be preheated before heating, otherwise the test tube is easy to burst.). Test tubes are divided into ordinary test tubes, support test tubes, centrifuge test tubes and so on. In teaching demonstration experiments, many chemical experiments need to strictly control the mixing ratio of two liquids, but in the actual operation process, if there is no quantitative dropper or quantitative measuring bottle, it is difficult to control the mixing ratio, which will affect the effect of the experiment. Contents of the invention [0003] Aiming at the deficiencies in the prior art, the technical problem to be solved by the present inventi...

Claims

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Application Information

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IPC IPC(8): B01L3/14B01L3/02
CPCB01L3/5082B01L3/0241B01L3/0282
Inventor 张震球
Owner JIANGYIN ZHENGZHONG SCI & EDUCATION EQUIP
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