Зарим Петрийн тавагт агарыг ашиглах шаардлагагүй байдаг. Тухайлбал [[эсийн өсгөвөр]] юм.
Modern Petri dishes often have rings on the lids and bases which allow them to be stacked so that they do not slide off one another. Multiple dishes can also be incorporated into one plastic container to create what is called a "multi-well plate". A [[microtiter plate]] is essentially a highly modified multiwell Petri dish plate.
As well as making [[agar plate]]s, empty Petri dishes may be used to observe plant germination or small animal behaviour, or for other day-to-day laboratory practices such as drying fluids in an oven and carrying and storing samples.
* [http://biologicalworld.com/agarplates.htm Making Agar Plates with Petri Dishes]
*[http://www.tauac.org/site/News2?page=NewsArticle&id=6133 Art in a Petri Dish]