S Shape Air Lock – Twin Bubble (C6514)
Fermentation lock or airlock is a device that provides a one way route to gases. It allows carbon dioxide released during fermentation to escape from the carboy while not allowing air to enter back in. This prevents oxidation.
Rubber stoppers with a drilled hole sits on the mouth of the carboy and an airlock is fitted over it.
This is a single piece S shaped airlock while we also have a 3 piece device.