As a general rule of thumb, it takes about a 1/2 lb of CO2 to dispense a 1/4 barrel of draft beer, and 1 lb of CO2 to dispense a 1/2 barrel of draft beer.
As a general rule of thumb, it takes about a 1/2 lb of CO2 to dispense a 1/4 barrel of draft beer, and 1 lb of CO2 to dispense a 1/2 barrel of draft beer.