CO2 Volumi British Ales 1.5 - 2.0 Porter, Stout 1.7 - 2.3 Belgian Ales 1.9 - 2.4 Lagers 2.2 - 2.7 Wheat Beer 3.3 - 4.5 (Volume desiderato - 0.88) x 4 x Litri finale = gr zucchero OG 1.044