Demonstrate atmospheric pressure in a memorable way with these durable plastic Magdeburg Hemispheres, ideal for science lessons in secondary and college settings. Designed for hands-on experiments, they allow learners to experience the impressive force required to separate the hemispheres once air is evacuated.

• Includes two plastic hemispheres with an effective O-ring seal

• 6mm plastic valve for easy air evacuation

• Requires a force of over 1400 Newtons to separate when evacuated

• Compatible with a hand-operated pump (not included)

• Suitable for classroom demonstrations of air pressure and vacuum principles