Mistura gasosa de CO2 e Ar ( ATAL , ATAL 12, ATAL15, ATAL 20, ATAL 21, ATAL 25, ATAL 40, ATAL 50, ARCAL 12, ARCAL 21, ARCAL CHROME, ARCAL SPEED E ARCAL FORCE,ARCAL M21,ARCAL M14, ARCAL M23,ARCAL M24)