The Lung Demonstration Model (Product Code: SLE/A/157) gives students a first-hand view of how the lungs work. Two sacs stand in for the lungs, a rubber membrane acts as the diaphragm and a clear plastic enclosure represents the chest cavity; when the diaphragm is made to relax and contract, the sacs visibly empty and fill with air. Manufactured by Jain Scientific Equipments Pvt Ltd (ScienceLab), Ambala, this simple working model is practical biology lab equipment for respiration lessons in schools across India.
| Parameter | Detail |
|---|---|
| Lungs | Two sacs representing the lungs |
| Diaphragm | Rubber membrane |
| Chest cavity | Clear plastic enclosure |
| Size | Height 30 cm x Width 14.5 cm |
| Operation | Diaphragm is made to relax and contract so the lungs empty and fill with air |
When the rubber diaphragm is drawn away from the enclosure, the space around the sacs increases, the pressure inside falls and air flows into the “lungs”, just as it does when the real diaphragm contracts and flattens. Letting the membrane return reverses the change and the sacs deflate. The demonstration links the mechanism of inhalation and exhalation to the pressure–volume relationship taught in physics, so it suits integrated science lessons as well as biology.
Before the lesson, check that the membrane sits evenly and that the sacs inflate freely, then move the diaphragm slowly so the class can match each movement to the change in the sacs. Students can finish by placing a hand on their own abdomen while breathing deeply to feel the same action. Its compact size makes it a sensible early purchase for any biology lab setup in a school.
The Lung Demonstration Model is made by Jain Scientific Equipments Private Limited, which operates under the ScienceLab name from Ambala, Haryana, and produces teaching equipment for biology, physics and chemistry laboratories. Tender and institutional buyers who need vendor registration details can use GSTIN 06AAECJ8618A1ZT and LEI 3358004HRD1JIVXKYX49. Visit the company profile for more about the company.
Equipment that extends a breathing lesson from mechanism to measurement and anatomy:
More anatomy teaching models are listed in our Human Models category.
How does the model show breathing?
Moving the rubber diaphragm changes the space inside the clear enclosure, so the two lung sacs fill with air and then empty, mirroring inhalation and exhalation.
How big is it?
It stands 30 cm high and is 14.5 cm wide, small enough to demonstrate at the front of a class or pass around a bench.
Is it an anatomically detailed lung model?
No. It is a working demonstration of the breathing mechanism; for detailed structure, use it with an anatomical model such as the Human Respiratory System Model, 2-parts.
Is anything else needed to run the demonstration?
The sacs, rubber diaphragm and enclosure together make up the apparatus, so the basic demonstration can be run with the model alone.
Can a worn rubber membrane be replaced?
Spare-part availability is not listed in our documentation; please contact us to ask about replacement membranes.
Can you supply class sets or export orders?
Yes. We supply schools, colleges and distributors in India and international markets; tell us the quantity and destination for a quotation.
For prices and availability of the Lung Demonstration Model, get in touch with us or add it to your enquiry cart along with any breathing and respiration equipment you need.
Last updated: 24 September 2026