Free and Easy scientific play set With this scientific kit you simulate a volcanic eruption with a chemical reaction (baking powder and an acid). Learn that a layer of fertile ash and lava is deposited during a volcanic eruption. That is why volcanic slopes are also very suitable for arable farming. Specifications: Color: multicolor Gender: junior Material: plastic Package dimensions: 22 x 17 x 6 cm (LxWxH) Age: from 8 years old Contents 1 Volcano 2 Cups 1 Eye protection 1 Pipette 2 spoons Pot of baking powder Pot of gluconic acid