Your Safer Source for Science

Since 1977

Address P.O. Box 219 Batavia, IL 60510
Phone 800-452-1261
Fax 866-452-1436

The procedure described in this publication provides a safe, alternative method using dilute acid and base solutions to produce the rainbow of color changes observed in the Rainbow Connection video presentation. Please see the Tips section for more information.


  • Acids & Bases
  • Indicators
  • pH