Drinkmate 60L (14.5 oz) refill cylinders use food grade CO2. Made of durable aluminum to US DOT standards, also compatible with SodaStream (except pink label quick-connect machines) and other brands of soda makers. This cylinder will make up to 60 liters of sparkling drinks, depending on the amount of carbonation desired. Compatible with Drinkmate, SodaStream (except pink label quick-connect), Aarke, Philips, Ninja Thirsi, and all other soda maker appliances in the Americas that use threaded CO2 cylinders. (Some items gleaned from manufacturer's website description for this product)