The company aims for about 2.8 to 3 volumes of CO2 -- the carbonation level of a fairly highly carbonated beer, but a little lower than some bottles and cans of sparkling water. Roam says its ...

The CO 2 cylinder twists into the back of the soda maker. Then you fill up the bottle with water, twist the lid onto the bottle, and slide it into the soda maker. Pushing the bottle back into the ...

And it even mitigates extra recycling efforts by cutting down on single-use bottles and cans. We decided to put soda makers to the test, so we fizzed, spritzed and sipped on soda water to ...