Extrusion-type leak-proof quantitative criss-cross counting surface sampling culture dish

Abstract

The invention discloses an extrusion-type leak-proof quantitative criss-cross counting surface sampling culture dish. The culture dish comprises a dish bottom and a dish cover, wherein the dish bottomis provided with a second buckle and a first buckle, which form a stable embedding structure, when in stress, the embedding structure can be released, so that a movable dish bottom side wall can moverelative to a first dish bottom side wall. In addition, a second dish bottom side wall can prevent a culture medium from overflowing from the dish bottom, a scale line can indicate a pouring volume of an agar culture medium, and a criss-cross line can simplify a counting process of a bacterial colony.

Description

technical field [0001] The invention relates to an experimental equipment, in particular to a pressure-out leak-proof quantitative grid counting surface sampling petri dish. Background technique [0002] Petri dish is one of the most widely used experimental equipment in biology. It is often used for the culture test of microorganisms on the surface of food packaging materials, tableware, etc., and the sampling of microorganisms on the surface of the object is usually wiped with a sterile cotton swab on the surface of the object to be tested, or Use sterile filter paper to stick to the surface of the object to be tested, and then transfer the cotton swab or filter paper to the buffer solution for eluting to achieve the purpose of sampling. However, cotton swabs or filter paper cannot completely release the collected microorganisms, which may easily cause incomplete cultivation of cultivable microorganisms; in addition, the sampling of microorganisms on the surface of objects...

AI Technical Summary

Problems solved by technology

However, cotton swabs or filter paper cannot completely release the collected microorganisms, which may easily cause incomplete cultivation of cultivable microorganisms; in addition, the sampling of microorganisms on the surface of objects requires aseptic operation, while cotton swabs or filter paper are used in the collection and elution of microorganisms. During the process, it is easy to be polluted by environmental microorganisms, and it is difficult to meet the requirements of aseptic operation; these shortcomings will cause the deviation of the microbial test results on the surface of the object

In addition, the operation process of the above method is cumbersome and inefficient, which easily causes waste of human resources

When the culture dish is poured into the agar medium, the pouring volume of the medium is usually determined by the operator according to experience, so the pouring volume of the agar medium of different personnel may have a large difference, thereby affecting the relevant experimental results

When the number of colonies of the target culture grown in the culture medium in the petri dish is huge, the counting process of the colonies is more cumbersome

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