Sodastream
How does sodastream compare to club soda in terms of pricing?
I used a sodastream "60L cylinder" (14.5 oz / 410 g / 0.63 ℓ CO2) to carbonate small (450 mℓ) and large (840 mℓ) bottles, and recorded how many of each I carbonated (three "buzzes" per bottle):
| 450 ml | 840 ml | Total vol. | |
|---|---|---|---|
| 1 | 20 | 16 | 22.44 ℓ |
| 2 | 9 | 20 | 20.85 ℓ |
Assuming I forgot to record a few, let's say a single sodastream canister carbonates 25 litres of water, which means
| CO2 | Soda yield |
|---|---|
| 410 g | 25 ℓ |
(which, by volume, is equivalent to 113 x 222 mℓ cans or 70 x 355 mℓ cans).
At the grocery store:
- club soda is priced at about 1.5-1.8 $/100mℓ;
- a CO2 cansiter is priced at about $40, i.e. 40 / (250 * 100 ml) = 0.16 $/100mℓ of soda.
So sodastream is:
- 10 times cheaper than cans (yet more bubbly than cans);
- significantly reducing your trash volume.