Petri Dishes

Plastic Petri dishes, commonly used in microbiology and cell culture, have several distinct characteristics:

Material:
They are generally made of high-quality polystyrene (PS), providing excellent optical clarity for distortion-free microscopic observation.

Sterility:
Most plastic Petri dishes are sterile and ready to use, which is essential for cell culture and microbiological applications to avoid contamination.

Design:
They are designed to promote uniform cell growth thanks to a flat growth surface. The lids often feature vents to ensure constant gas exchange while protecting the culture environment.

Variety of formats:
Available in different sizes (e.g., 90 mm as mentioned in the search results) and configurations (single or multi-well, round or rectangular, with or without compartments as shown in the image), they adapt to various experimental needs.

Identification:
Numerical indicators can be present on the bottom to facilitate identification of cell locations.