Petri dish is a kind of laboratory utensils used for microorganism or cell culture. It consists of a flat disc-shaped bottom and a lid, and is generally made of glass or plastic. The materials of petri dishes are basically divided into two categories, mainly plastic and glass. Glass can be used for plant materials, microbial culture, and adherent culture of animal cells. The plastic may be made of polyethylene, and there are disposable and multiple-use ones, suitable for laboratory inoculation, https://www.rollmed.net/lab-supp...le-glass-petri-dish.html