KR20120032173A - Adjustable airtight petridish - Google Patents

Abstract

The present invention relates to a petri dish used for culturing microorganisms (Petridish) provided in the present invention is composed of a circular base and a circular cover placed on the base. Since there are protrusions that engage the outer wall of the base and the inner wall of the cover, the cover and the base can be fixed or sealed simply by rotating the cover without using a wrap or parafilm. It can be stored for a while and the cover can be opened during the experiment to prevent contamination.

Description

Adjustable airtight petridish {Adjustable airtight petridish}

The present invention relates to a petri dish for microbial culture designed to prevent evaporation of water by controlling the opening and closing between the cover and the base.

 Petri dishes are generally used for microbial cultivation consisting of a dish with a low side dish that surrounds the bottom of a circular plane, and a lid shaped like a lid that can loosely cover the support. Currently, petri dishes of various sizes are used for microbial culture, but petri dishes having a diameter of 9 cm and a height of 15 mm are most common. In the early days, glass was used as a material for making petri dishes, but nowadays, disposable petri dishes made of plastic are mainly used. Commercially available plastic Petri dishes feature three or more 0.1-0.5 mm high protrusions on the inner top of the cover or on the side of the base to prevent the base and the cover from sticking. There is a little space between the cover and the base to prevent the petri dish from sealing because it prevents contamination by other microorganisms and keeps fresh air from containing the gas and oxygen essential for growth. This is to enable exchange.

Most laboratories dealing with microorganisms use agar medium that has been sterilized and then liquefied in Petri dishes at a high temperature of 3-5 mm to allow solidification. Most of these media are used for several days to several weeks before use. Are refrigerated for a while. In addition, in the case of frequently used strains, it is common to keep them by culturing in Petri dish solid medium. In this case, most laboratories use parafilm or lab to seal the petri dish to prevent water evaporation and contamination of the medium, but the lapping is repeated every time it is used. It is essential to leave a space between the petri dish's support and the cover, but if the medium containing a large amount of water is stored or cultured for a long time, the concentration of the medium is changed by allowing evaporation of the water contained in the medium. Furthermore, the shelf life of the medium is shortened.

In order to solve the above problems, it can be easily opened and closed, and the petri dish can be sealed / fixed as necessary to control the growth of microorganisms and to extend the shelf life of the solid medium stored in the petri dish. The cover is opened to provide a petri dish that can prevent the medium from being contaminated.

The present invention for achieving the above object consists of a Petri dish support having a protruding structure on the outer surface and a petri dish cover having a protruding structure engaged with the protruding structure of the outer surface of the support on the inner surface according to the rotation direction of the cover Manufactured to be sealed and fixed

As described above, since the petri dish provided by the present invention can be fixed and sealed, the cover is opened during the experiment using the petri dish to prevent the medium from being contaminated and the petri dish coated with a solid medium. Eliminate the hassle of sealing with parafilm or wrap for storage

1 is a three-dimensional view showing the petri dish of the present invention.
Figure 2 is a side view showing a fastening process of the petri dish of the present invention.
Figure 3 is an enlarged side view of the binding portion of the Petri dish fastened in a locked state.
Figure 4 is an enlarged side view of the binding portion of the Petri dishes fastened in a closed state.
DESCRIPTION OF THE REFERENCE NUMERALS
1: coupling jaw, 2: groove, 3: fixed jaw, 4: base jaw

1 is a view showing the support and the lid of the petri dish provided by the present invention. The cover has a structure in which three or more engaging jaws 1 protrude on the inner side and includes the same number of grooves 2 as the number of engaging jaws. The base has a structure in which the same number of fixing jaw (3) protrudes on the outer surface and includes the same number of supporting jaws (4) below the fixing jaw.

2 is a diagram showing a fastening process of the cover and the base. Fixing jaw (3) protruding on the outer surface of the base is asymmetrical structure so that when the cover is rotated counterclockwise, a thin portion of the fixing jaw and the engaging jaw (1) protruding on the inner surface of the cover is fastened. In this case, the side of the cover is placed on the base of the base (4) of the base, and the cover and the base are locked and locked, but the space is maintained between the base and the base, thereby enabling microbial culture. Of course, simply covering it without tightening it does not affect microbial culture. 3 is a side view showing the fastening portion in more detail. As shown in FIG. 2, when the cover is rotated in the clockwise direction, the engaging jaw 1 protruding from the thick portion of the fixing jaw and the cover inner surface is fastened. In this case, the groove (2) of the side of the cover is placed on the support jaw (4) of the base so that the cover and the base are sealed and fixed. Figure 4 is a side view showing the fastening in more detail

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Claims (2)

Petri dish consisting of a cover and a base containing a fastening structure The cover according to claim 1, wherein the cover includes three or more engaging jaws 1 and the same number of grooves 2 on the inner side and the same number of fixing jaws 3 and the same number of support jaws (on the outer side). 4) Petri dish, which consists of a base of a structure including a cover and a base which can be fixed and sealed.

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