Date: Around 1999
I am doing a project on flower pigmentation with a bunch
of third graders and I have decided to add rubbing alcohol to produce
the many colors on a paper towel. What color flower is the best to use
so that more than one color appears? And how much rubbing alcohol
should I use?
I haven't heard of this technique before. If you do this in the classroom,
make sure there is plenty of ventilation, open windows, etc. I don't think
the vapors are good to breathe in.
Anthony R. Brach, Ph.D.
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Update: June 2012