Magdeburg Hemispheres Manufacturer,Supplier and Exporter in India
Product Code : EL-CL-13469
Jlab Export is a leading Magdeburg Hemispheres Manufacturer,and suppliers in India
Magdeburg Hemispheres (code EL-CL-13469) are a pair of metal demonstration hemispheres that close into a sealed sphere and are emptied through a nozzle with a vacuum pump. With the air removed the halves resist being pulled apart; opening the valve lets air back in and they part easily. JLab builds model JL/IPL-739 in Ambala, India, for physics classes on vacuum and atmospheric pressure.
Specifications
| Parameter | Detail |
|---|---|
| Model | JL/IPL-739 |
| Type | Demonstration pair of hemispheres |
| Material | Metal |
| Air outlet | Nozzle with valve |
| Air removed with | Vacuum pump, through the nozzle |
| Quality check | Each hemisphere pair is visually inspected before dispatch |
| Pack quantity | Each (sold individually) |
| Minimum order quantity | 10 units |
| Dispatch time | Usually 4–6 working days |
| Product code | EL-CL-13469 |
| Manufacturer | Jain Laboratory Instruments Pvt Ltd (JLab) — OEM |
| Country of origin | India (made in Ambala, Haryana) |
Why the Halves Hold Together
When the rims first meet, the air trapped inside is at the same pressure as the room, so nothing keeps the sphere closed. Pumping air out through the nozzle lowers the pressure inside, while the atmosphere goes on pressing on the whole outer surface. It is this outside air pressure that clamps the hemispheres together; the vacuum itself does not pull. The force needed to separate them equals the difference between outside and inside pressure multiplied by the area of the circular cross-section at the rim, so a better vacuum makes the pair harder to open.
Running the Demonstration
Press the two rims together, connect the vacuum pump to the nozzle and draw out the air, then close the valve before taking the pump away. Students can then try to pull the halves apart and feel how firmly they are held. To end the lesson, open the valve: air flows back in, the pressures inside and outside become equal again, and the hemispheres separate by hand.
Related Pressure Apparatus
- Magdeburg Hemisphere (Aluminium Powder Coated) — copper hemispheres with an aluminium powder coating and fitted rims.
- Microscale Vacuum Apparatus with Hand Pump — a small bell jar and hand pump for low-pressure experiments.
- Demonstration Hydraulic Press — shows pressure passed through a confined fluid between two pistons.
Other apparatus for school pressure and fluid lessons is in the Chemistry Lab range.
Request a Quote
Use Add To Cart or our contact page to ask for a quotation, giving the number of pairs and the town or port they are going to.
Last updated: 29 October 2026
