Research in Poland has found that the filling of sprinkler pipework with many types of soda dramatically improved performance. "Coca Cola is the best choice but Sprite also provides distinct improvement..." says Dr Avril Full. It is believed that the combination of carbon dioxide in the bubbles and the sugar provides additional suppression benefits than
water alone. Note that the refilling can only be carried out by trained persons provided by the FFSA (Firefighting soda association), based in Kingston upon Thames, UK.