Magdeburg Hemispheres
Product Code : SCL-CL-11888
Magdeburg Hemispheres (SKU SCL-CL-11888) are a pair of metal demonstration hemispheres that, once joined and emptied of air, are held together so firmly by atmospheric pressure that students struggle to pull them apart. The set brings the classic seventeenth-century air-pressure experiment into the classroom. Science Lab Supplies supplies it from Ambala, India, with schools, colleges, tender contractors and distributors among its buyers.
Specifications
The apparatus is two metal hemispheres that seal together to trap air, with a nozzle and valve for removing the air using a vacuum pump. With the valve closed, the low pressure inside holds the halves together; opening the valve lets air back in, balances the pressure and the halves separate easily.
| Parameter | Value |
|---|---|
| SKU | SCL-CL-11888 |
| Model no. | SCI/LSS-1539 |
| Material | Metal (demonstration model) |
| Construction | Two sealing hemispheres with nozzle and valve |
| Operation | Air removed through the nozzle with a vacuum pump |
| Demonstrates | Vacuum, air pressure and atmospheric force |
| Supplied by | Science Lab Supplies, Ambala, India |
Applications and Experiments for the Magdeburg Hemispheres
Magdeburg hemispheres give a memorable, hands-on proof that the atmosphere exerts a large force on every surface. They are used in CBSE/NCERT Class 8 science (Force and Pressure), Class 11 physics (mechanical properties of fluids) and in physics classrooms and laboratories to explain vacuum and atmospheric pressure.
- Class 8 science: showing that air exerts pressure in all directions.
- Class 11 physics: estimating the force of atmospheric pressure on the hemisphere area.
- Showing how releasing the vacuum through the valve equalises pressure.
- History-of-science lessons on Otto von Guericke's original demonstration.
Standard Scope of Supply
The set consists of the two metal hemispheres with their nozzle and valve, as described above. The listing uses a vacuum pump to evacuate the sphere but does not list one as part of the item, so ask for a pump on the same quotation if your laboratory does not already have one.
Packing, MOQ and Lead Time
You may ask for one pair for the demonstration bench or several pairs for group work. Each quotation lists the packing, delivery time and price for the quantity requested, and a hand vacuum pump or barometer can be quoted alongside.
Science Lab Supplies is registered as an exporter with an Importer-Exporter Code and can ship to buyers in Oman, the Philippines, Nepal, Bangladesh, Zambia and Rwanda. Science Lab Supplies is registered for GST (GSTIN 06ADEPJ0574F2ZU). Get in touch through the contact page, build a list in the enquiry cart, or visit the lab tender page for tender buying.
Frequently Asked Questions
Is a vacuum pump needed with the Magdeburg Hemispheres?
Yes. Air is removed through the nozzle with a vacuum pump. A pump is not listed as part of this item, so request one on the quotation if required.
How are the hemispheres separated after the demonstration?
Open the valve so air flows back inside. Once the pressure inside and outside is balanced, the two halves come apart easily.
Who supplies the Magdeburg Hemispheres?
Science Lab Supplies supplies this apparatus from Ambala, India, quoting schools, colleges and contractors that are equipping school chemistry lab and physics rooms in India.
What concept does this apparatus teach?
It shows that the atmosphere exerts a strong pressure: when air is removed from inside, outside air pressure holds the hemispheres together.
Related Air Pressure and Vacuum Equipment
The hemispheres depend on a vacuum source, and air-pressure lessons usually continue with instruments that measure pressure. These four items supply the vacuum and extend the lesson to pressure measurement, so they are often ordered together.
- Hand Vacuum Pump with Pressure Gauge — a hand-operated vacuum source with gauge.
- Vacuum Pressure Pump — a pump for vacuum demonstrations.
- Microscale Vacuum Apparatus with Hand Pump — small-scale vacuum experiments.
- Metal Barometer — measures atmospheric pressure directly.
Browse the full Chemistry Lab range or all school lab equipment.
Last updated: 25 September 2026
.jpg)
