JPH0779963B2 - Reaction vessel - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION The present invention relates to about 0.5 ml-10.
The present invention relates to a small reaction container having a diameter of 6 to 8 mm and a height of about 30 mm which is used when various reactions are carried out by injecting a solution having a small volume of about 0 ml and heating.

[0002]

2. Description of the Related Art In general, a reaction vessel is often used in a sealed state, but as a vaporization prevention, a non-volatile liquid having a specific gravity smaller than that of the solution, for example, mineral oil, is put on the solution to prevent the vaporization from the solution. Alternatively, by incorporating an inner lid of a predetermined size into the upper lid of the reaction container, the evaporation volume is reduced and the evaporation is reduced.

However, in the above-mentioned method of forming a mineral oil layer on the upper part of the liquid, when the purity of the oil itself is low, impurities are mixed in the liquid and a normal reaction cannot be carried out, or after the reaction, the mineral oil is completely removed. It becomes complicated to do. In the case of a container having a defined inner lid, there is a drawback that the amount of solution injected into the reaction container is limited.

[0004]

SUMMARY OF THE INVENTION An object of the present invention is to provide a reaction container which eliminates the above-mentioned conventional drawbacks and can surely prevent evaporation of a solution.

[0005]

The means of the present invention are as follows.

A reaction vessel in which a solution to be heated is placed and an inner lid for preventing evaporation of the solution is housed in a vessel equipped with an upper lid so as to be vertically movable.

[0007]

When the liquid A is injected into the reaction container 5 and the reaction process includes heat treatment, the inner lid 4 attached to the upper lid 2 via the support rod 1 is lowered to the position just below the liquid with a fingertip. Thus evaporation of the solution can be prevented.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Referring to the drawings, 5 is a reaction container provided with a lower lid 3 and an upper lid 2 provided with a sealed inner lid 4 made of a flexible plastic material such as synthetic resin or rubber via a supporting rod 1.
The solution A is put in the reaction container 5 so that the inner lid 4 is positioned on the solution A. The inner lid 4 is moved up and down by the support rod 1 depending on the amount of the solution.

[0009]

According to the present invention, the evaporation of the solution can be prevented by moving the inner lid to a position (height) suitable for the volume of the solution regardless of the amount of the solution in the container.

[Brief description of drawings]

FIG. 1 is a vertical sectional front view.

FIG. 2 is a cross-sectional view containing a solution.

FIG. 3 is a cross-sectional view containing a solution.

[Explanation of symbols]

 1 Support Rod 2 Upper Lid 3 Lower Lid 4 Airtight Middle Lid 5 Reaction Vessel

Claims (1)

[Claims] 1. A reaction vessel in which a solution to be heated is placed and an inner lid for preventing evaporation of the solution is housed in a vessel having an upper lid so as to be vertically movable.