For those looking up information on bacteria, here is some new information that you might be interested in following up further. The cell culture dish is also known as the petri dish. And yes, you are so right; it is named after the famous bacteriologist Julius Petri. This dish is a small cylindrically shaped glass. It has a plastic lid attached to it. The dish is used by biologists to culture cells. Cells, as you may know by now, can take the form of bacteria.
They are also defined as ‘small mosses’. Today’s Petri dishes will have rings and slots attached to the lids and bases. This is to prevent slippage when they are being stacked. Multiple dishes can be packed into a single container with the object of the exercise being to create what is known as a multi-well plate. The glass Petri dish can be re-used once it has been sterilized. But plastic dishes, if used, will be disposed of.
It will be assumed that this is being done in a responsible manner. The salient reason for this is so that the contamination of cultures, from one to the other, can be avoided. Petri or cell culture dishes will be used to make agar plates for the purposes of further microbiological studies. The dish will be partly filled with a warm liquid that contains agar as well as study or experiment-specific ingredients. This could include the likes of blood, carbohydrates, dyes, amino acids, antibiotics, indicators, nutrients and salts.
When the agar cools and solidifies, the dish will be ready to be plated or inoculated with a microbe filled sample. Loaded virus cultures will require inoculations in two stages. And after the agar has been prepared, bacteria will be harvested in the dish in order to provide hosts for the ‘viral inoculum’.