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Quantitative sample weighing spoon

A technology for weighing samples and spoon handles, applied in the direction of a small shovel, etc., can solve the problems that quantitative weighing cannot be completed at one time, the centrifuge tube cannot be completely transferred, and the experimental results are affected, so as to reduce the time of sample exposure to the air and avoid sample contamination. The effect of changing properties, improving work efficiency and reliability of results

Pending Publication Date: 2019-05-10
INST OF COTTON RES CHINESE ACAD OF AGRI SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the previous experiments, the weighing of the sample powder was generally completed on the weighing paper, but the quantitative weighing cannot be completed at one time, and the weighing personnel need to try many times to complete it. Moisture is adsorbed on the weighing paper and cannot be completely transferred to the centrifuge tube, so it will have a certain impact on the experimental results
[0010] (2) During the process of loading the adsorbent into the adsorption column, due to the small inner diameter of the adsorption column, the quantitatively weighed solid adsorbent cannot be quickly added to the adsorption column. When the adsorbent is used, it is still impossible to avoid the spilling of the adsorbent

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] A spoon for weighing samples quantitatively, comprising a spoon body (1) and a spoon handle (2); it is characterized in that: the spoon body (1) is a hollow cylinder, the top is open, the bottom is sealed and connected to the spoon handle ( 2) connection; the spoon handle (2) is provided with a section of thin spoon handle (21) near the spoon body (1), and the end of the spoon handle (2) away from the spoon body (1) is provided with a round hole (22); the spoon Handle extension (20) one end is provided with circular hole (22), the other end is provided with cylindrical projection (23), and the cylindrical projection (23) of spoon handle extension (20) one end can be with the circular hole (2) of spoon handle (2) 22) are tightly connected to extend the spoon handle (2).

[0033] The height of the spoon body (1) is 2.5mm, the inner diameter is 4mm, and the outer diameter is 5mm;

[0034] The length of the spoon handle (2) is 100mm, the width of the thin spoon handle (21)...

Embodiment 2

[0037] Tenax-TA is a 2,6 diphenylfuran porous polymer resin, which is widely used in the collection of volatile or semi-volatile substances in gases, liquids and solids, and can also be used for the collection of volatile and semi-volatile substances in high humidity samples. As the filling material, use the self-made quantitative weighing spoon in [Example 1] to fill the adsorption column with Tenax-TA (60 / 80 mesh) adsorbent, 5 small spoons can accurately fill 50mg, and the error of repeated repetitions is small. And the adsorbent is not spilled during the filling process.

Embodiment 3

[0039] A spoon for weighing samples quantitatively, comprising a spoon body (1) and a spoon handle (2); it is characterized in that: the spoon body (1) is a hollow cylinder, the top is open, the bottom is sealed and connected to the spoon handle ( 2) connection; the spoon handle (2) is provided with a section of thin spoon handle (21) close to the spoon body (1), and the end of the spoon handle (2) away from the spoon body (1) is provided with a round hole (22).

[0040] The height of the spoon body (1) is 2.5mm, the inner diameter is 4mm, and the outer diameter is 5mm;

[0041] The length of spoon handle (2) is 80mm, and the width of thin spoon handle (21) is 2.5mm, length is 4mm;

[0042] The material of the spoon body (1) and the spoon handle (2) is polyethylene plastic.

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Abstract

The invention discloses a quantitative sample weighing spoon, comprising a handle and a bowl, and belongs to the technical field of auxiliary tools for physiochemical detection. The bowl is a hollow cylinder, the top of the bowl is opened, the bottom of the bowl is sealed and is connected with the handle, the part of the handle close to the bowl is provided with a thin handle, the end of the handle far away from the bowl is provided with a round hole, one end of the extension of the handle is provided with the round hole, and the other end is provided with a cylindrical protrusion; the cylindrical protrusion at one end of the extension of the handle may be tightly connected with the round hole in the handle so that the handle is extended. Compared with the prior art, the quantitative sample weighing spoon has the advantages that the spoon herein is convenient to use, the length of the handle is increasable, and applications under special conditions can be guaranteed; the spoon is suitable for quantitatively weighing a solid sample, the sample can be poured completely into a specified container at a time, and splashing of the sample is effectively avoided; the sample can be sub-packaged quickly, time for the sample to be exposed in air is shortened, a change in the character of the sample is effectively avoided, working efficiency is improved, and the reliability of results is improved.

Description

technical field [0001] The invention belongs to the technical field of physical and chemical detection auxiliary tools, in particular to a spoon, in particular to a quantitative sample weighing spoon. Background technique [0002] The weighing spoon is a common tool for taking powdery or small granular solids in the laboratory. When testing solid samples, most of them need to use electronic balances and weighing spoons to weigh the samples, and the size of the weighing spoons used is also different according to the difference in the amount of samples to be weighed. [0003] Among the currently published patents on medicine spoons or weighing spoons, the improvement measures mostly focus on the following aspects: [0004] CN 204514633 U discloses a kind of weighing spoon that can meet the requirements of different sample volumes. When the sample volume is large, the spoon body is used, and when the sample volume is small, the wing scoop is used; [0005] CN 205216876U discl...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01L3/18
Inventor 朱香镇崔金杰张开心李东阳张帅雒珺瑜
Owner INST OF COTTON RES CHINESE ACAD OF AGRI SCI
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