A petri dish is a laboratory vessel used for microbial or cell culture, consisting of a flat disc-shaped bottom and a cover, generally made of glass or plastic.

A petri dish is a laboratory vessel used for microbial or cell culture, consisting of a flat disc-shaped bottom and a cover, generally made of glass or plastic.

Liquid culture medium (liquid culture medium), the equivalent of solid medium, is a liquid medium for microorganisms or animal and plant cells. It has the advantages of aeration culture and shaking culture. Under static conditions, a nutrient barrier is formed around the bacteria or cultured cells, and the intake of nutrients is hindered. Since this obstacle can be eliminated and the oxygen supply can be increased under the condition of aeration or shaking, it is beneficial to cell growth and improves production.
