This S-shaped airlock is the preferred choice for secondary It allows you to monitor the pressure.
Fill the line with boiled water/sanitiser. This easy to use airlock allows carbon dioxide released during the fermentation process to escape from the fermenter without allowing air to?enter and accidentally oxidise your brew/wine. brew/wine.

Features:

*Clear for easy monitoring
*Prevents oxidation during the fermentation process
*Easy to clean
*Polypropylene material
*Grommets not included.

Package Contents

2 x S Shape airlocks