Preparing Agar Plates
Preparation of sterile agar plates is the first step in culturing microorganisms and testing the effectiveness of antimicrobial agents.
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What is Preparing Agar Plates?
"Agar plates are sterile Petri dishes containing a nutrient-rich medium used for the growth and study of microorganisms."
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Agar Plate Preparation
The nutrient agar medium must be sterilised in an autoclave before pouring.
Petri dishes should be stored upside down to prevent condensation from dripping onto the agar.
Agar provides the necessary nutrients (carbohydrates and nitrogen) for bacterial growth.
Cool the agar slightly before pouring to reduce steam but not so much that it solidifies.
Remember that the plate should NOT be sealed completely; some oxygen must reach the bacteria to prevent anaerobic growth.
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