United Scientific® Lung Apparatus – Classroom Model for Respiratory System & Diaphragm Function Demonstration

Bring respiratory science to life with the United Scientific® Lung Apparatus, a hands-on teaching tool designed to clearly demonstrate the mechanics of breathing. This interactive model shows how the lungs expand and contract as the diaphragm moves, making it an ideal resource for classrooms, labs, and homeschool science lessons.

The apparatus features two balloons that represent the lungs and a rubber sheet that acts as the diaphragm. When the diaphragm is pulled downward, air pressure changes inside the chamber and the balloons inflate, simulating inhalation. Releasing the diaphragm deflates the balloons, demonstrating exhalation.

Perfect for biology, anatomy, and physiology studies, this durable model helps students visualize air pressure, lung capacity, and respiratory system function in a simple, memorable way.