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During an outbreak of fire, the availability of an operating fire extinguisher is crucial. However, the fire extinguisher might fail due to the lack of maintenance and limited lifespan. As such, using a simple twisting action to create a chemical reaction between bicarbonate salts and acid will produce a massive amount of carbon dioxide instantaneously. Apart from that, this tackles the problem of expiry with its substances being stored separately in a non-pressurized form.
Video Link: http://youtu.be/Q-tFEoUf33w
National University Of Singapore
Eason Chow Wai Tung