Cracking type quantitative visible handheld square counting surface sampling culture vessel

Abstract

The invention discloses a cracking type quantitative visible handheld square counting surface sampling culture vessel. The culture vessel comprises a vessel bottom and a vessel cover. When the vesselis stressed, a transverse crack opening and a longitudinal crack opening formed in the first vessel bottom side wall can crack, so that the bottom side wall of a movable vessel can be disengaged; theheight of the first vessel bottom side wall is lower than the plane of a solid culture medium, so that the surface microbial sampling operation is simpler and more convenient. Through the matching ofa first grasping handle and a second grasping handle, the vessel bottom and the vessel cover can be more conveniently opened or buckled; through an observation window, the observation of tiny bacterial colonies can be more convenient; scale lines can be used for indicating the pouring volume of an agar culture medium; through square lines, the counting process of bacterial colonies can be simplified.

Description

technical field [0001] The invention relates to an experimental equipment, in particular to a split-type quantitative visual hand-held 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 obj...

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

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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