This simple, yet effective apparatus consists of two sacs which represent the lungs, a rubber membrane which serves as the diaphragm and a clear plastic enclosure which models the chest cavity.
making the diaphragm relax and contract the students can see how the lungs are emptied and filled with air.
A firsthand view of how the lungs work.
Size: Height 30cm x Width 14.5cm 

Biology School Lab Equipment Suppliers in India 

Ltekonline are the manufacturers of Lung Demonstration Model Human Biology Equipment Lab used to demonstrate engineering principles in Engineering Colleges, Engineering Schools and Biology Laboratory Equipment for Engineering Teaching Lab in Universities