Equipment used in the fermentation of wine and beer that allows carbon dioxide through out fermentation tanks during the fermentation process, but do not let outside air into the fermentation tanks.
Equipment used in the wine and beer. Allowing carbon dioxide to pass out of the fermenter during fermentation. But do not let outside air into the compost bin.
Equipment used in the fermentation of wine and beer. That allows carbon dioxide through the reactor during fermentation. But not allow outside air into the reactor.