Senior Airlock

The Senior Airlock is a compact three-piece airlock for suitable fermenters, carboys and demijohns. It allows fermentation gas to escape while helping limit outside air and contaminants entering the vessel.

How to use it

Fit it into a compatible grommet or bored bung, add sanitiser solution or previously boiled water to the indicated level, then fit the cap. Keep it upright and check the liquid level during longer fermentations.

Compatible fitting

For suitable demijohns and the listed 5L glass jar, pair it with a Bored Bung 26–34mm. Measure the vessel opening before ordering.