Magdeburg Hemispheres, Plastic

Product Code : EL-PLE-11890

Quick Answer: The Magdeburg Hemispheres, Plastic is a pair of plastic 10cm-diameter hemispheres, each with a sturdy handle, for demonstrating air pressure. Once evacuated they are hard to pull apart.

Last updated: October 2026

Key Features

• Two plastic hemispheres of 10cm diameter, each with a sturdy handle
• Gasket seal on one hemisphere
• Stopcock on the other for 0.8-1.2cm inner-diameter vacuum tubing
• Can be evacuated with a hand pump, aspirator or vacuum pump
• Operating instructions included

Technical Specifications

About This Product

The hemispheres are joined, connected to a hand pump, aspirator or vacuum pump and evacuated. Students then find it hard, if not impossible, to pull them apart. Opening the stopcock lets air back in and the hemispheres separate easily, showing the effect of air pressure.

Frequently Asked Questions

How are the Magdeburg Hemispheres, Plastic evacuated?

Join the hemispheres, connect the stopcock to a hand pump, aspirator or vacuum pump using 0.8-1.2cm inner-diameter vacuum tubing, and evacuate them.

How do you separate the hemispheres afterwards?

Open the stopcock to let air in, and the hemispheres separate easily.

Related: Physics Lab Equipment, Magdeburg Hemispheres, Boyle's Law Apparatus.

For a quotation on the Magdeburg Hemispheres, Plastic, contact School Lab China.