230k views
1 vote
What is the purpose of the cotton wool plug oh the conical flask

1 Answer

6 votes

The purpose of the cotton wool plug on the conical flask is to permit the free passage of air over the edge of the flask and prevent the establishment of semi-anaerobic conditions in the culture. It can also be used to allow gases produced during a reaction to escape while preventing contaminants from entering the flask.

User Pyromancer
by
7.6k points