Vented versus non-vented Petri dishes

Vented Petri dishes have a small lip on the top edge of the dish that allows the lid to sit a little up from the bottom, allowing for some air flow.  Non-vented Petri dishes allow the lid to sit more or less flat on the bottom.  I was wondering what the best applications are for triple, single and non-vented Petri dishes, and found this guide from Thomas Scientific:

  • Triple vented: aids gaseous exchange. Ideally suited for short term work
  • Single vented: limits gaseous exchange, minimizes evaporation and dehydration. Ideally suited for long term work
  • Non-vented: most suitable for anaerobic and long term work
150-x-20mm-petri-dish
Non-vented Petri dish
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Vented Petri dish
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