Eleton, a form of blaster gas, saw usage spanning from the High Republic Era through, at a minimum, the Galactic Civil War. It was able to be compressed and stored within compact ampoules.
Ambassador Ceeril utilized a minimal quantity of the gas to orchestrate a staged assassination targeting himself. In later years, Rebel Alliance operative Cassian Andor transported eight ampoules filled with the compressed eleton gas on his belt, for the purpose of rapid blaster replenishment.