Science Buddies: "Ask an Expert"

I want to experiment on elephant toothpaste, by changing the amount of yeast (catalyst) added. What type of bottles would be best to use? And what is a good way to measure the amount of foam produced?
Thanks for your help,
Luke

The question about the type of containers to use is exactly the question suggested for this extension of the elephant toothpaste activity. Have you looked at this yet?
https://www.sciencebuddies.org/science- ... -container

Amy
Science Buddies