JPS643480Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a device for mixing and stirring a small amount of sample solution in an analytical device or the like.

Generally, methods for stirring a solution include attaching a propeller to the tip of a rod and rotating it, or placing an iron piece covered with plastic etc. in a liquid container and rotating the iron piece using a rotating magnetic field from the outside. Some methods have been put into practical use, such as using a diffuser plate like an aeration tank, and ejecting small bubbles into the liquid, but all of these methods require a relatively large amount of liquid. However, it cannot be applied when dealing with extremely small amounts of solution, from several tens of μ1 to several hundred μ1, in clinical tests, etc.

A conventional method for mixing and stirring a small amount of solution was to pass it through a mixing coil, but this had the disadvantage of requiring a long time to operate.

The present invention provides an apparatus that can completely mix and stir a small amount of solution collected by a batch method in a short period of time.

The drawing is a configuration diagram showing an embodiment of a mixing and stirring device for a small amount of solution according to the present invention.

In the figure, 1 is a sample collector, and 2 is a mixing container, which is shaped like a funnel with an opening at the bottom, and the opening at the bottom is tubular so that a tube 3 can be connected thereto. The material of the container 1 is metal that will not be attacked by the sample solution.
Use glass, plastics, etc. and,
A thin wire 4 is inserted into this tubular opening so as to slightly protrude and stand upright above the container, and is held using a suitable thin wire holding member 5 so that its position does not change. . A tube pump 6 is connected to the other end of the tube 3, which can pump both gas and liquid by squeezing the tube, and which acts as a shutoff valve when the tube is stopped.

To explain the procedure for mixing and stirring using this device, first, a sample liquid and a diluted liquid are sampled with a sample collector 1 and discharged into a mixing container 2. At this time, the tube 3 is closed by the tube pump 6, and the sample liquid is held in the mixing container 2. Then, the tube pump 6 is activated to send air from the bottom of the mixing container 2 through the tube 3 and into the liquid in the container 2 to mix and stir the liquid.

At this time, the thin wire 4 arranged upward from the bottom of the mixing container 2 plays an important role, and if this operation is performed without the thin wire 4,
The air sent into the liquid in the mixing container 2 becomes a large mass of bubbles and rapidly reaches the space above the liquid due to buoyancy, and therefore does not exhibit a sufficient stirring effect. In contrast, in the present invention in which the thin wire 4 is provided, air bubbles finely crushed by the thin wire rise from the bottom of the mixing container 2 at an appropriate speed due to buoyancy, and the liquid in the container 2 is sufficiently mixed and stirred. That is, by dividing the bubbles into small pieces by the thin wires 4, a very large stirring effect can be obtained, and the stirring effect is particularly great for small or trace amounts of liquid.

The sample liquid that has been stirred is sent to the tube pump 6.
is reversed and aspirated from the tube 3 and sent through the tube pump 6 to the detection end of the analyzer.

The thin wire 4 may be made of any material as long as it is not corroded by the sample liquid, but it must have the strength to hold it in place, and the diameter and length must match the viscosity of the sample liquid, the capacity of the mixing container 2, and the opening diameter. . Usually, thin platinum wire is used.

[Brief explanation of the drawing]

The drawing is a configuration diagram showing an embodiment of a mixing and stirring device for a small amount of solution according to the present invention. In the figure, 1... Sample collector, 2... Mixing container, 3
...Tube, 4...Thin wire, 5...Thin wire holding member, 6...Tube type pump.

Claims (1)

[Scope of utility model registration request] A funnel-shaped mixing container having an opening at the bottom, a thin wire having one end inserted into the bottom opening of the container and arranged so as to stand upright, and one end connected to the bottom opening of the mixing container, A device for mixing and stirring trace amounts of solutions, consisting of a tube with a tube pump connected to the other end.