In other to study the features and the characteristics of micro organism colonies, petri dish is the apex apparatus used for the task. Petri is shallow, flat and have a large surface area. These fixtures make it possible growth of organism. Petri dish is always heat resistant plastic or soda-free glass, they are disposable one, and there is reusable one. They come in different varieties, but the one commonly used is 99mm diameter which is disposable. Petri dish is sterilized in a copper thin. The copper thin is made up of a deep lid, the deep lip inhibit the escape of air into the petri dish when cooling.
Oven is another method of sterilization most used in the laboratory.
the mechanism involve the use of ovary for sterilization of petri dish is that oven is used to sterilized petri dish via the process of potting the petri dish insidr the oven and the oven temperature is set to 160 ºC and left for one hour for complete sterilization.
After that the petri dish is removed from the oven and left too cool at room temperature before commencing culturing.
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