lie on capacity

product very practical, precise dosage of the quantity of bubbles, great for not throw your bottles.
By cons, they give 60 liters for three pressures, equivalent to almost no carbonated water ..
It will take between 4 and 8 following pressure if you like Perrier or Badoit, or very small bubbles.
So battery life of a cartridge 30 expected 25 to about 50 liters, averaging 40 for me, I think (4 pressures, or even 5 times).
Approximately 0.8 liter amounts of the price, and there is downright ruinous! (Price of a red badoit with his bottle ....).