A full, licensed CO2 carbonator is included with the purchase of every SodaStream soda maker kit. When empty, Go Lightly takes back the cylinder to be sent to Sodastream to be cleaned, inspected, refilled and reused. Must bring in an empty cartridge to get the refill rate on cylinders. Otherwise cylinders are $32.99 without exchange.

Cartridges are good for 60 liters of soda.