Press-out type visual handheld surface sampling petri dish easy in marking

Abstract

The invention discloses a press-out type visual handheld surface sampling petri dish easy in marking. The petri dish comprises a petri dish bottom and a petri dish cover and is characterized in that the petri dish bottom is provided with second fasteners and first fasteners, the second fasteners and the first fasteners are in a stable fastening structure, the fastening structure can be unfastenedwhen being stressed to allow movable petri dish bottom lateral walls to move relative to first petri dish bottom lateral walls, the petri dish bottom and the petri dish cover can be conveniently separated from or fastened to each other through the coordination of first grippers and second grippers, efficient marking can be achieved through marking areas, and minute colonies can be conveniently observed through observation windows.

Description

technical field [0001] The invention relates to an experimental equipment, in particular to a push-out type easy-to-mark visible hand-held 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 requi...

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

Most of the existing petri dishes are made of glass and need to be marked with an oil-based marker pen. However, the handwriting of the oil-based marker pen needs to be erased with a special organic solvent. Therefore, when multiple petri dishes are used repeatedly, the inconvenience of marking will easily cause to confuse

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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