When fizzing in sodastream ULTIMATE Multi-drink™ different vessel sizes (S / M / L), is the same amount of CO2 required? Do I use more CO2 if I carbonate in bigger vessels?

Yes, the bigger the drink volume is, the more CO2 is required. If wanting to achieve the same carbonation level - an M size drink will require 2 times more CO2 than a S size drink (L size is 3 times more CO2 than S).

The ‘Strong’ Fizz level uses different amounts of CO2 in the S, M and L drink sizes, however the Fizz level in each of these feels the same.

• Disclaimer - One CO2 cylinder in Sodastream ULTIMATE Multi-drink™ makes up to 120 glasses of 8 oz/236ml (total 28L of drink)