Soda carbonators from SodaStream are made of light weight aluminum. We maintain the highest quality standards and we ensure safety and security of our CO₂ refills. Our soda carbonators are available in various sizes, allowing for 60 to 130 liters of carbonated soft drinks per carbonator. A full CO₂ soda carbonator is included with the purchase of our soda maker machine. When the gas in the carbonator finishes, consumers exchange the empty carbonators for a full one, paying only the cost of a gas refill.