The preparation of growth media involves several steps:
1. Selection of Ingredients: Depending on the type of medium, various ingredients such as peptones, agar, salts, and growth factors are selected. 2. Sterilization: The medium is sterilized to eliminate any contaminating microorganisms, usually by autoclaving. 3. Pouring and Solidification: For solid media, the sterilized medium is poured into petri dishes and allowed to solidify.