Bursting Bottle – Cast Iron Demonstration Bottle (KS4+)

This robust bursting bottle is designed to demonstrate the powerful expansion of water upon freezing. Made from cast iron and measuring 90 × 20mm, it is tapped to accept a threaded, square‑shanked iron stopper. Perfect for dramatic, memorable physics demonstrations.

Key Features

• Heavy‑duty cast‑iron bottle for freezing‑expansion demos
• Threaded opening with iron stopper
• Dimensions: 90 × 20mm
• Suitable for KS4+ physics demonstrations

Ideal for Physics Lessons

• Expansion of water and anomalous properties of ice
• Pressure build‑up and mechanical force demonstrations
• Thermal properties of matter

An impactful demonstration device illustrating the dramatic force of freezing water.