Is what makes the beer fizzy and carbonated. why valley brewery in herefordshire needs half a pint of liquid co2 delivered for every pint they make — that's 3 million litres a year. without it, the beer would be completely flat and undrinkable, so co2 is essential. but if co2 is all around us, shouldn't these companies be able to harvest it themselves? that's where these future—looking refrigerator—sized units come in from a new us start—up. we can provide co2 for large food packaging plants, all the way down to a small machine air — to pull all the co2 right out of the air from insi...