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

Item #: AP5713

Price: $17.60

The Pulse Glass provides a dramatic demonstration of heat transfer with only the heat from your hand. 

See more product details

Product Details

Dramatic demonstration with only the heat from your hand. Two glass bulbs are connected with a glass tube and contain a colored, volatile liquid. Holding one of the bulbs in your hand causes the liquid to boil and the vapor to move into the other bulb where it bubbles rapidly.

Caution: Never use with any heat source warmer than body temperature.