JPS6213005Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a viewer that can easily adjust the zero point with a quick and easy operation.

Conventional automatic burettes have a complicated structure and have many thin tubes, so there are many places where they break, and the zero point adjustment takes time, causing problems such as leakage of titrant.

In order to solve these problems, the inventors of the present invention constructed two sets of grooved two-way pots by connecting a brewet tube and a side pipe branched from the two-way dripping tube and provided in parallel. A zero point adjusting barrel is connected to the upper liquid storage tank through the cap, and a groove is provided in the stopper of the two-way cap with two sets of grooves so that when the cap is closed, the inside of the barrel tube in contact with it communicates with the outside air. It was devised.

This makes it possible to always maintain a constant level of the liquid injected in the fillet tube, and does not require any complicated zero point adjustment.

The present invention will be further explained below with reference to the drawings.

In Fig. 1, a graduated tube 1
The side pipes 2 branched from the brewer tube 1 at the upper part of the two-way dripping pot 5 and provided in parallel communicate with the lower part of the upper liquid storage tank 4 through two sets of grooved two-way pots 3. It's getting old.

As shown in FIG. 2, a groove 8 is provided in the stopper 7 of the two-way socket 3 with two sets of grooves so that when the stop is closed, the inside of the brewet tube 1 in contact with it can be communicated with the outside air. It is being

The shape and size of this groove may be arbitrary.

To inject liquid into the brew tube 1, close the two-way dripping pot 5 shown below, and then close the two-way pot 3 with two sets of grooves.
Open it and pour liquid from the liquid storage tank 4 into the brewet tube 1 and side tube 2 to fill them. Next, close the two sets of grooved two-way pots 3 to complete the process.

At this time, the liquid level in the brewet tube 1 is always constant and is in a state where titration is possible because it communicates with the outside air.

Therefore, by marking the scale on the fillet tube with this liquid level as zero, there is no need for complicated zero point adjustment.

As described above, the burette of the present invention allows for very easy zero point adjustment, the equipment is simple, there are few damaged parts, and efficient titration can be performed.

[Brief explanation of the drawing]

FIG. 1 is a side view of the present invention, and FIG. 2 is a longitudinal cross-sectional view of a two-way cot with two sets of grooves according to the present invention. 1... Biuret pipe, 2... Side pipe, 3... Two-way pot with two sets of grooves, 4... Liquid storage tank, 5... Two-way pot for dripping, 6... Stopper, 7... Stopper, 8...
groove.

Claims (1)

[Scope of utility model registration request] The brewet tube 1 and a side pipe 2 branched from the brewet tube 1 and provided in parallel at the upper part of the two-way dripping pot 5 are connected to the upper liquid storage tank 4 through two sets of grooved two-way pots 3. A zero point adjustment characterized in that a groove 8 is provided in the stopper 7 of the two-way socket 3 with two sets of grooves so that when the socket 3 is closed, the inside of the brewet tube 1 that contacts it communicates with the outside air. Beurezt.