Your Safer Source for Science

Since 1977

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

November 05, 2016

Indicator Sponge illustrates how indicators work. During the demonstration, a red sponge is placed in a red solution and it comes out blue, while the blue sponge turns red when it is placed in a blue solution.