S-Type Airlock, also known as a “double bubbler” or “bubbler airlock”. Airlocks allow your fermentation to vent CO2 without letting contaminants in. Can be used for wine, beer, cider or any other home brewing project. One piece 2 Chamber airlock that features a smaller chamber so you can closely observe the CO2 rising and with that, the rate of fermentation. Fill the airlock with water and insert it into a drilled stopper to vent gases during fermentation. Airlocks enable CO2 to be released during fermentation, but it traps oxygen from entering the fermenter and harming your beer or wine. Choose between the Bubbler Airlock and the Three-Piece Airlock. Compatible with all our drilled stoppers.
