The Cleanest Butane Available - 99.9994% Pure Colibri Premium Butane is the cleanest available for your lighter. Colibri butane is produced to the exacting standards required by the high performance jet (torch) lighters we introduced to the world in the mid-1980s. Processed in world-class refineries and canned in only the cleanest environment possible, resulting in fuel so pure, less than 6 parts per million, that it does not require repeated filtering to remove the unwanted matter and contaminants that affect the performance of your lighters, and adulterate the flavor of your premium cannabis.