Experiment with acid-based reactions and buoyancy with this little submarine.
The fuel is a mixture of bicarb soda and citric acid so it’s perfectly safe to play with in the bath. Junior chemistry at its finest. Suits ages 8+. Stem toy.
Please note: Sodium citrate is not hazardous or irritating, so feel free to splash around in the bath with your submarine. Just take care to avoid skin or eye contact with the fuel powder.
