The largest exploding soap bubble was 25 cm (250mm) in diameter and was achieved by Gennadij Kil (AKA ‘Blub’- Germany) at the Centro de Crecion y Formacion Joven of Guia de Isora, Tenerife, Spain on 13 January 2011.
Blub filled the bubble he made himself with propane butane gas before holding a lighter to it and watching it explode.