Så om det inte skulle räcka så trycker vi in nytt syre i ölet via co2-tuben om man inte spundar i fatet. Livet är tufft för detaljnördar som jag
Let’s state very clearly at the onset that the even the purest CO2 most homebrewers can get, which is typically 99.9% Grade, contains somewhere between 20-30 ppm of Oxygen (O2) impurity. For our calculations, we are going to assume that homebrewers have access to 99.9% Grade CO2 (1), which typically has a maximum of 30 ppm O2 impurity depending on supplier.