Petri Dish

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A Petri Dish is a shallow dish with a cover that biologists use to culture cells or small moss plants. Also referred to as petri plate or cell culture dish, it was named after German bacteriologist Julius Richard Petri, who invented it while working under Robert Koch. Petri dishes are made of glass or plastic. Glass Petri dishes can be reused by sterilization; however, in experiments where cross-contamination from one experiment to the other is suspected, plastic petri dishes are used as disposables.

Apart from culturing cell, a petri dish is also used to culture bacteria, to view seed germination, or for studying behavior of small animal. A petri dish fit easily under a dissection scope, and is often used as a platform for viewing any small objects.