Franklin’s Boiling Flask

Experience the thermodynamic magic with your Franklin’s Boiling Flask

🌡️ Instant reaction to heat: the colored liquid activates upon contact with your hand

🔬 Demonstration of physical laws: concrete visualization of vapor-liquid equilibrium

💎 Premium borosilicate glass: durable and transparent material for perfect observation

📏 Convenient size 6.5 x 1.9 inches: ideal for handling and classroom demonstrations

♻️ Perpetual operation: reusable infinitely without energy consumption

A striking scientific experience in your hands

Simply place the bulb of the Franklin’s Boiling Flask in your palm and observe the dramatic transformation that occurs. The heat from your body, at only 98.6 °F, is enough to trigger the boiling of the volatile liquid. The colorful bubbles gracefully rise to the top, creating a hypnotic ballet that perfectly illustrates the principles of thermal transfer and state changes.

An outstanding educational tool for understanding thermodynamics

This lively demonstration makes the Charles’s law and the concepts of evaporation-condensation accessible to all ages. Unlike theoretical explanations, here every cycle is visible and immediate. Release your hand and watch the reverse process: cooling causes the gas to condense and descend, completing this fascinating thermodynamic cycle endlessly.