Cracking-type quantitative visible easy-to-press surface sampling culture dish

Abstract

The invention discloses a cracking-type quantitative visible easy-to-press surface sampling culture dish. The culture dish comprises a dish bottom and a dish cover, wherein when the culture dish is under stress, transverse crack openings and longitudinal crack openings formed in first dish bottom side walls can be cracked, so that movable dish bottom side walls are separated, resulting in that a height of the first dish bottom side walls is lower than a plane of a solid culture medium, and the surface microorganism sampling operation is simpler and more convenient; by arranging an observationwindow, the minute colony is more convenient to observe; by arranging scale lines, a pouring volume of an agar culture medium can be indicated; and by arranging a pressing table, the movable dish bottom side walls are more convenient to move.

Description

technical field [0001] The invention relates to an experimental equipment, in particular to a split-type quantitative visual easy-press 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 requires...

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 colony of the target culture grown on the medium in the petri dish is small, it is necessary to enlarge the colony with a microscope to observe the accurate shape of the colony, and the petri dish needs to be opened during the magnification and observation of the colony, which may cause pollution or spillage of harmful cultures

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