Frequently Asked Questions
How much carbonated water can a CO2 Twist cylinder produce?
An Indigo Soda Classic Twist CO₂ cylinder can carbonate up to 60 litres of water. Actual output depends on your preferred carbonation level: the fizzier you like your water, the more CO₂ you use per bottle.
To make the most of your cylinder, carbonate well-chilled water and adjust the number of button presses to achieve your preferred level of fizz.
To learn more about how CO₂ cylinders work and how to exchange them, read our guide to reusable CO₂ cylinders.
How do I install a Classic Twist CO2 cylinder in my sparkling water machine?
The purple Indigo Soda Classic Twist CO₂ cylinder screws into sparkling water makers with a compatible TR21-4 threaded connection.
- Prepare the machine. Remove the water bottle and open the cylinder compartment according to the manufacturer’s instructions. If you are replacing an empty cylinder, unscrew it and remove it.
- Prepare the full cylinder. Remove its seal and protective cap.
- Install the cylinder. Position it in the compartment and screw it in by hand until securely fitted. Do not use tools or overtighten.
- Close the compartment. Your machine is ready to carbonate cold water according to its instruction manual.
Not sure which connection system your machine uses? Read our guide to choosing the right CO₂ cylinder for your sparkling water maker.
Which machines are the Classic Twist Indigo Soda cylinders compatible with?
Purple Indigo Soda Classic Twist CO₂ cylinders are designed for sparkling water makers with a TR21-4 screw-in connection, including:
- SodaStream: Fizzi, One Touch, Crystal, Jet, Genesis, Source, and Power.
- Aarke: Carbonator models that use a screw-in cylinder.
- DrinkMate, Breville, Smeg, and ChefClub: models equipped with a compatible connection.
- Indigo Soda sparkling water makers and various other machines that use a standard screw-in system.
Classic Twist cylinders are not compatible with Quick Connect machines, which require a turquoise Easy Connect cylinder.
Read our CO₂ cylinder compatibility guide to identify the right cylinder for your sparkling water maker.
CO₂ cylinder compatibility is separate from reusable water bottle compatibility.
