Pouring agar plates

Welcome to our suite of NUI Galway Microbiology teaching videos. We hope that they will guide you in performing your experiments in a scientific and safe manner.
This video gives an overview of how to pour agar plates using aseptic technique.

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I would pour 25-35 mL in a 9cm plate. It depends on incubation times and the humidity. I find that plates tend to dry out and crack if poured too thin.

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Why are the plates stacked?