Your Safer Source for Science

Since 1977

Address P.O. Box 219 Batavia, IL 60510
Phone 800-452-1261
Fax 866-452-1436
Email flinn@flinnsci.com
firewatch

Is it magic? Is it a mystery? No—it is just science. Students write secret messages using disappearing ink and then use chemistry to develop and transmit the messages.

Concepts

  • Acids & Bases
  • pH
  • Indicators